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Freewing 70mm Yak-130 EDF Jet

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Written by Jon Barnes
An affordable and enjoyable EDF jet
Abridged product review
Photos by the author
Read the full product review in the April 2016 issue of
Model Aviation.


Specifications

Model type: PNP EDF jet
Skill level: Intermediate
Wingspan: 36.2 inches
Length: 41.3 inches
Weight: 61 ounces
Power system: Freewing 70mm six-blade EDF
Needed to complete: Six-plus channel radio and receiver; 6S 22.2-volt 3,000 to 4,000 mAh LiPo battery pack
Construction: EPO foam
Street price: $229.99


Test-model Details:

Motor used: Freewing 2849/2200 Kv brushless outrunner (installed)
Speed controller: Freewing 60-amp with BEC (installed)
Battery: Admiral Pro 6S 22.2-volt 60C 4,000 mAh LiPo
Radio system: Spektrum DX9 transmitter; Spektrum AR7010 receiver
Ready-to-fly weight: 68 ounces
Flight duration: 4 to 7 minutes


Pluses

• Brightly colored red and white airframe offers excellent in-flight visibility.
• Electric servoless tricycle retracts with 3mm diameter, spring-loaded struts are durable and make for easy ground handling.
• High-performance 70mm EDF power system propels the Yak to speeds of up to 90 mph.
• Included flaps allow the Yak to take off and land on shorter runways and at reduced speeds.
• Option to build and fly as a lighter, gearless, 4S-powered hand-launched model.


Minus

• Slight gap between the wing and fuselage.


Abridged product review

The Yakovlev Yak-130 is a seldom-modeled Russian trainer/light-attack aircraft. Manufactured by Freewing, the 70mm Yak-130 is available from Motion RC in both Plug-and-Play (PNP) and ARF Plus versions. The former requires only an appropriately sized battery and radio system. The latter does not include the Freewing 70mm EDF power system, allowing a pilot to use the EDF power system of his or her choice.

Both versions include a full array of 9-gram metal gear servos, a set of tricycle-configuration electric retracts with 3mm steel wire struts and metal trunnions, and flaps. Both kits require a minimum six-channel radio system. The PNP version reviewed in this article is Freewing’s upgraded (read as higher thrust and performance) Yak-130.

This upgraded kit comes equipped with a brushless outrunner-powered 70mm EDF unit and requires a 6S 22.2-volt 3,000 to 4,000 mAh LiPo battery. The increasing popularity of higher-blade-count impellers had me expecting an impeller with 10 or 12 blades, but the fan included with this kit uses a six-blade impeller.
The Yak-130 features a nicely detailed cockpit that includes a pair of helmeted jet fighter pilot busts! The airframe is finished in a brilliantly colored Ferrari red and white scheme that promises to offer excellent in-flight orientation feedback.




This kit, with its low parts count, assembles in a jiffy and features a nice level of scalelike detail.




The removable cockpit canopy hatch even includes instrumentation graphics and a pair of pilot busts!



The included tricycle electric retracts are equipped with sturdy metal struts. The Yak-130 fuselage features extended wing roots and wide-set engine intakes. I was glad to find that this model was designed to fly without the need for cheater holes.


Flying

The assembly manual specifically recommends using a six-cell 3,300 mAh LiPo battery with this EDF jet. Like most modelers on a budget, I check my current battery inventory to see if I already have a suitable one on hand. Although I did not have a 6S 3,300 mAh pack, I had a fresh 6S 4,000 mAh Admiral Pro.

Unlike some of the larger EDF jet models I have seen, the Yak’s landing gear does not utilize shock-absorbing struts. It instead uses the simpler, less expensive, and lower net parts method known as coiled steel struts on the main gear. The nose gear uses an even simpler, non-suspension-equipped strut.

Through a no-frills approach, I found the steering and tracking response of the Yak when on the ground to be tight and true. With the Yak’s long nose pointed into the wind and the flaps dropped to the takeoff position, I slowly rolled into the throttle and brought the 70mm fan to life.

The Freewing 70mm six-blade impeller sounds sensational in the air. Although it might not have the sound of the higher-blade-count fans, it doesn’t lack in performance. The bright red and white airframe offers excellent in-flight orientation cues. After a few minutes of rolling and ripping across the skies, it was time to transition the Yak into the landing pattern.




The six-blade Freewing 70mm EDF power system sounds nice and smooth and provides flight durations of 4 to 7 minutes on a 6S 4,000 mAh LiPo battery pack.




The included retractable tricycle gear is electric. Flaps are included out of the box and using them decreases the amount of runway required to fly the Yak.



The Yak looked like a bucking bronco on its first landing. I theorize that the short coupled airframe and carrying too much airspeed on final approach might have been contributing factors.

The Yak’s high-speed performance was satisfying and stable. I observed a slight tail waggle at times, possibly because of the tall vertical stabilizer and rudder assembly being pushed around on windier days. The Yak’s airframe is slightly chubbier than most, and the associated drag ultimately limits it when it comes to all-out speed.


Conclusion

I was quite happy with the sound and performance of the six-blade EDF power system. Although a six-cell 4,000 mAh pack is larger than the recommended battery, it makes it possible to achieve flight durations of five or even six minutes (throttle-use dependent). With its red and white finish and excellent in-flight performance, I have a new favorite EDF jet!
—Jon Barnes
barnesjonr@yahoo.com


Bonus video


Manufacturer/Distributor:

Freewing/Motion RC
(224) 633-9090
www.motionrc.com


Sources:

Spektrum
(800) 338-4639
www.spektrumrc.com





Horizon Hobby E-flite ultimate2 BNF Basic with Safe Technology

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Written by Jon Barnes
A durable aerobatic biplane to grow with
Abridged product review
Photos by the author
Read the full product review in the April 2016 issue of
Model Aviation.


Specifications

Model type: Electric 3-D aerobatic biplane
Skill level: Intermediate
Wingspan: 37.6 inches
Wing area: 519 square inches
Length: 42.6 inches
Weight: 40 ounces
Power system: .10-size brushless electric
Receiver: Spektrum AR636A six-channel DSMX with AS3X
Needed to complete: Six-plus channel Spektrum DSM2/DSMX transmitter; 2,200 mAh 3S 25C 11.1-volt LiPo flight battery; charger
Construction: Z-Foam
Price: $249.99


Test-model Details

Motor used: E-flite .10 1,300 Kv brushless outrunner (installed)
Speed controller: E-flite 40-amp brushless with BEC (installed)
Battery: 3S 11.1-volt 25C 2,200 mAh LiPo
Propeller: E-flite 12 x 4
Radio system: Spektrum DX9 Stealth DSMX transmitter; Spektrum AR636A DSMX receiver (installed); four E-flite 13-gram digital servos (installed)
Ready to-fly weight: 40 ounces
Flight duration: Five minutes


Pluses

• No tools required for assembly/disassembly.
• Brightly colored blue and orange paint scheme.
• AS3X stabilization makes it feel like a larger airplane in flight.
• Preprogrammed Spektrum AR636A receiver simplifies transmitter programming.
• Panic mode provides a bailout for pilots experimenting with new maneuvers.
• Ball-link-style connections used on all control surfaces.
• Cleverly engineered fasteners and retention pins for tool-less assembly.


Abridged Product review

World-class pilot and designer, Mike McConville, is the creative talent behind this new E-flite biplane. Although this Ultimate’s overall dimensions, all-up weight, and use of a 10-size brushless power system might initially cause a pilot to conclude that it is almost identical to the previously released Ultimate 20-300 ARF, a closer look reveals that E-flite and Mike have built a number of exciting and advanced features into this version!

First and foremost on the list of improvements is E-flite’s use of Z-Foam. I have owned and flown more than a few Z-Foam composition models and I love the finish and durability of E-flite’s unique and proprietary chemistry of foam. Another noteworthy improvement that the Ultimate² enjoys is its use of an AS3X-equipped Spektrum receiver. The BNF version came with a Spektrum AR636A six-channel DSMX receiver preinstalled. AS3X technology works behind the scenes to provide an incredible level of in-flight stability.

The AR636A receiver also comes equipped with E-flite’s “Panic” feature. Should a pilot lose control orientation, or at any time find himself or herself hopelessly lost in the midst of an aerobatic maneuver, a simple push of the bind button on the transmitter will activate the Panic Mode and restore the model to level flight.

With plenty of cool technology stuffed under the hood, the Ultimate² biplane arrives dressed in a bright blue and orange custom graphics scheme from noted aircraft artist, Mirco Pecorari.




One of the kit’s nicely engineered features is the manner in which the wings and struts are attached to the airframe. No tools are required!


Flying

Having ailerons that are roughly a third of the total wing chord, an elevator that is the same size as the horizontal stabilizer, and a rudder that dwarfs the dimensions of the vertical stabilizer, it is apparent that this model is designed to excel at high-performance aerobatics and extreme 3-D.

The addition of AS3X stabilization and Panic Mode allows less-advanced pilots to easily enjoy flying it. To properly address this model from both perspectives, I will first offer some sport pilot impressions.

As a nod to the Ultimate²’s thoroughbred pedigree, I slammed the throttle wide open and sent the biplane straight up into the blue with a hard pump of up-elevator. The Ultimate² eagerly broke ground and rocketed skyward—requiring a mere 50 to 60 feet of runway to do so. With the biplane in an aggressive upline, I applied full right aileron and was surprised at the rapidity of the roll rate generated by the small amount of aileron deflection programmed into Precision Mode.

With the Ultimate² now high overhead, I chopped the throttle, pulled the nose over, and fed in full up-elevator. With a subtle rocking of the wings, the biplane adopted a nose-high attitude and began to fall. I found it easy to modulate the throttle and hold the Ultimate² in high-alpha attitude while steering around the field with the rudder.

As is typically the case with AS3X-equipped models, the Ultimate² flies like a much larger airplane. Landings are consistently easy—whether performed conventionally or in a high-alpha, tail-touch-the-ground-first manner.

Although this model is within the abilities of less-experienced pilots, E-flite’s “ultimate” target audience must be the advanced aerobatics and extreme 3-D-capable crowd.




The ball-link-equipped aileron pushrods are short and direct, providing slop-free pushrod connections.





The vortex generators on both wings enhance the Horizon Hobby E-flite Ultimate² BNF Basic’s post-stall performance.


My friend, Josh Bernstein, has only been flying for a few years, but he has already gained entry into that esteemed club. His intense focus and drive have developed his piloting proficiency to an amazing level in a relatively short time. After burning through a couple of battery packs, I handed my DX9 transmitter and the Ultimate² to Josh and let him have at it!

Josh offered the following comments:

Flying the Ultimate² in precision mode was such a pleasure that I was most of the way through a second battery before remembering that the airplane is also 3-D capable. Shifting gears, I explored the Ultimate²’s 3-D chops by tasking it with both higher-energy tumbling maneuvers (blenders, knife-edge spins, pop-tops, snaps, and crankshafts), and low-and-slow post-stall flight (such as hovers, harriers, waterfalls, and rolling harriers).

For the most part, the lower-gain 3-D mode worked fine for tumbling, but when I attempted a pop-top (a move that requires some finesse and exact timing), I sensed something was holding the airplane back.

I have tailored my radio programming to fit my preferences when it comes to rates, exponential, and flight modes. AS3X stabilization systems ask a pilot to forgo some control, and often, the increase in stability is a worthwhile tradeoff.

If a pilot wants to improve his or her aerobatic and 3-D skills while having an excellent sport airplane capable of drawing precise and stable lines in the sky, then mating the Ultimate² to the AR636A receiver is an excellent choice. Much like a trained driver who, upon getting into a new Ferrari immediately turns off the traction control, a pilot looking for a pure 3-D experience might interpret the AS3X’s assistance as slightly intrusive.




Even on gray winter days in California, the bright orange and blue color scheme is extremely visible.


Conclusion

This new rendition of the Ultimate biplane from E-flite is fresh and exciting. I liked the tool-less assembly, easy-access battery hatch, and the Z-Foam composition airframe. Although balsa-and-plywood airframes are recognized for being lightweight and strong, many pilots now favor the amazing durability of foam-composition models.

With the bailout capabilities offered by the embedded Panic Mode, aspiring aerobatic and 3-D pilots interested in trying new routines, or some of the more extreme 3-D maneuvers, will find that the Ultimate² reduces the risks and anxiety inherent to venturing outside of one’s comfort zone.

Less-experienced pilots will appreciate the confidence-inspiring AS3X technology in this Ultimate2 aerobat. This aircraft will allow newer pilots to take their aerobatic/3-D skills and proficiency to the next level!
—Jon Barnes
barnesjonr@yahoo.com


Bonus video:


Manufacturer/Distributor:

Horizon Hobby
(800) 338-4639
www.e-fliterc.com


Sources:

Spektrum
(800) 338-4639
www.spektrumrc.com




FlightLineRC P-38L Lightning

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Written by Jon Barnes
Fly the famous fork-tailed devil
Product review
Photos by the author
As seen in the April 2016 issue of
Model Aviation.


Specifications:

Model type: Electric-powered warbird
Skill level: Intermediate
Wingspan: 63 inches
Wing area: 600 square inches
Length: 46 inches
Weight: 111 ounces
Power system: Twin brushless electric
Radio: Minimum six-channel transmitter
Construction: EPO foam
Covering/finish: Factory painted with graphics included in the kit
Street price: $349.99


Test-model Details

Motors used: Two 3748-600 Kv brushless outrunners (installed)
Speed controllers: Two 60-amp with 5-amp BEC (installed)
Propellers: 12 x 7 three-blade (installed)
Battery: Two Admiral Pro 4S 14.8-volt 50C 2,500 mAh LiPos; or Admiral 4S 14.8-volt 35C 3,000 mAh LiPos
Radio system: Spektrum DX9 Stealth DSMX 2.4 GHz nine-channel transmitter; Spektrum AR7010 DSMX 2.4 GHz seven-channel receiver
Ready-to-fly weight: 125 ounces using two Admiral 4S 14.8-volt 35C 3,000 mAh batteries
Flight duration: 5 to 7 minutes


Pluses

• A satisfyingly large version of the most exciting, instantly recognized, and historically significant twin-powered World War II-era warbird.
• Available in Pacific Silver or Allied Green color scheme; both feature extensive squadron and maintenance graphics.
• Inboard/outboard split flaps, sequenced gear doors, and electric retracts.
• Plenty of space for batteries and receiver beneath the conveniently long, removable canopy/hatch.
• Gear wells and inner surfaces of flaps are painted an authentically scale zinc chromate green color.
• Molded-into-the-foam wiring troughs and control interface board help tame the abundance of wiring inherent to a twin model.
• Landing light in the wing’s leading edge is only lit when the gear is deployed.
• Ball link connections used on the control surface side of all pushrods.


Minuses

• Silver-colored elevator counterbalances did not match the zinc chromatic green of the horizontal stabilizer.
• Fasteners used to attach the center section of the main nacelle to the wing’s center section were too short.


Product review

In a short time, Motion RC has become a one-stop shop for pilots who love warbirds and EDF-powered jets. Although its diverse product inventory is not limited to these two types of models, Motion RC’s development of strategic partnerships with several prolific, overseas-based manufacturers has resulted in a seemingly endless supply of new and exciting must-have warbird and jet models.

Add in the fact that Motion RC stocks a complete selection of parts for the aircraft that it sells, and its quick rise to popularity among pilots comes as no surprise. Its announcement in early 2016 about the Motion RC-exclusive new FlightLineRC brand of models has put warbird enthusiasts on high alert, and for good reason.

Although the release of three propeller-driven warbird models was initially announced to springboard this new Motion RC-developed brand, the centerpiece of the new FlightLineRC trio is undeniably the 1,600mm-wingspan, electric-powered, EPO foam-composition P-38 Lightning. As the associated marketing materials mention, this P-38L is currently the largest mass-produced foam P-38 in the world! It is a model that many fork-tailed devil aficionados have clamored for.

Many of the staff members at Motion RC actively participate in a number of the forum-based sites. The company sponsors a forum-based discussion site at HobbySquawk.com, actively aggregating the preferences and opinions of pilots when developing new models. The list of pilot-pleasing features included with this exciting new P-38L is proof that it benefited from this unique approach to product development.

Foremost among the features that will have twin-warbird-loving pilots grinning is the fact that this model is large and its wingspan qualifies it as a 1/10-scale replica of the full-scale Lightning.

The fully retractable tricycle gear, driven by electric retracts, benefits from servo-driven sequenced gear doors to keep things tidy and clean while in flight. The four inboard and outboard split flaps are each driven by their own servo. I was especially impressed to find that the gear wells and inside surfaces of the flaps were all painted an authentic-looking zinc chromate green!




Also available in a brightly finished Pacific Silver color scheme, the author was enamored with the dull green and gray finish of the Allied Green scheme.


Twin-powered electric models inherently have a bewildering abundance of servo leads and power wiring. FlightLineRC helps keep the wiring neat and manageable by including wiring troughs in the wing’s center section. The wing’s center section also features a notably thick, embedded aluminum spar that appears to anchor what the company describes as an airframe that is carbon reinforced in critical locations.

Having owned and flown several smaller P-38 models, most of which had limited space for the receiver and flight battery, I was anticipating the same crowded under-the-canopy scenario. However, the P-38’s center nacelle possesses ample space for receiver installation and flight batteries, and access to all of these components is almost completely unrestricted, thanks to a removable canopy that runs nearly the entire length of this nacelle!

A set of preinstalled brushless power systems and scalelike three-blade counter-rotating 12 x 7 propellers are listed as being able to pull the P-38 along at speeds of roughly 80 mph. Motion RC offers a higher-performance power system that uses more conventional, but less scalelike, two-blade propellers to boost the top speed by 10 to 15 mph.




The big 12 x 7 three-blade propellers counter-rotate as they do on the full-scale P-38 Lightning.


Most pilots like being able to customize the appearance of their military aircraft. Motion RC provides pilots with several ways to personalize this model. The aircraft is offered in an Allied Green or a Pacific Silver color scheme.

Additional options are included in the form of a large sheet of squadron graphics. Pilots can choose between four sets of squadron graphics if they go with the Allied Green P-38, while the graphics in the Pacific Silver kit allow pilots to model their P-38 after four aircraft from the 431st Squadron.

Other graphics with the package that enhance the model’s scale realism include a sheet of “maintenance” lettering and water-slide vintage Curtiss propeller graphics.


Construction

Although a plug-and-play kit, the FlightLineRC P-38L comes with a surprisingly thick assembly manual. The 50-page black and white manual is written in three languages and is peppered with an abundance of CAD-style 3-D graphics. The manual is so thoroughly illustrated that a pilot could probably use it to completely assemble this model in the same manner as the FlightLineRC factory personnel do.

Although most pilots will not need the level of detail offered by the manual to make their way through assembly in preparation for flight, should any part or piece of the airframe suffer crash damage and need to be replaced, the manual would be a valuable resource.

Like many modern kits, the basic airframe can be assembled without needing one drop of adhesive. By my count, 19 fasteners are used to assemble the P-38’s airframe—15 of which are Phillips-head metal screws that thread tightly into plastic receivers.

Alternately, the outer wing panels are attached to the tailboom sections using machine-thread screws. These screws mate into brass-colored, threaded metallic inserts. Using this method of attachment for the outer wings is wise because metal-to-metal machine-thread connections can be unthreaded and rethreaded almost an unlimited number of times with no loss of holding power. Try that with a metal-to-plastic connection!

This design feature allows transport-challenged pilots to easily break down the airframe to a convenient size. Removing the outer wing panels will require that a pilot disconnect the aileron servo leads, outboard flap leads, and embedded navigation and landing lights wiring.

I had a little difficulty when it came to the five fasteners used to attach the center nacelle/cockpit to the wing’s center section. Although the manual calls out the fasteners to be used as being 10mm in length, I found that the two in the center of the assembly needed to be slightly longer in order to reach their final destinations. Rummaging around in my parts bins, I found some slightly longer fasteners that got the job done.

Pilots building this kit will also need to assemble and install the pushrods. Thanks to the inboard and outboard flaps, there are quite a few of them used on this model. The manual lists the length of each pushrod, as well as the recommended holes in which to place them on both the servo horn and control horn. This model uses ball-link connectors on all of the control surfaces.

The servo ends of the pushrods are a simple 90° bend that is secured in place using snap-on plastic retainers. The P-38L comes out of the box with a whopping 13 preinstalled servos. Most of these are 9-gram, metal-gear servos. The only exceptions are the servos that operate the gear doors and the elevator servo. The former are 9-gram servos with plastic/nylon gears, while the latter is a higher-torque 17-gram, metal-gear servo.

As can be expected when assembling a full-featured twin electric model, the wiring can be daunting. FlightLineRC included a small, integrated circuit board module, simplifying the connections of the control surface servos, retracts, gear door servos, and embedded lights.

Stowing the Spektrum AR7010 seven-channel receiver, integrated circuit module, and the excess lengths of all of the servo leads into the large, square recess that is molded into the aft end of the center nacelle was not an issue. The satellite receiver was hot glued in place approximately 6 inches forward of the main receiver.




Well designed and deeply dimensioned troughs in the center section of the wing keep the wiring neatly concealed.


After the main airframe is assembled, builders will have to break out a little adhesive. FlightLineRC includes a nice selection of scalelike add-ons that give the P-38 an authentic scale outline. The company did an impressive job of recreating the exposed twin turbochargers. The paint recreates the appearance of aircraft components exposed to extremes in both weather and regular operating temperature cycles.

Although these two details come glued in place on the tailbooms, I used the included contact-style adhesive to attach the antenna mast, the elevator counter-balances (which were painted silver instead of the olive drab of the elevator), the five gun barrels, the drop-tank pylons, and the outer horizontal stabilizer assemblies. The two bulbous drop tanks snap into place on the pylons using strong magnets.

After the model is fully assembled, pilots who prefer to make the P-38 as scalelike as possible will want to apply the included graphics. FlightLineRC includes placement guides for both the squadron and maintenance graphics.

These graphics feature a clear, glossy overlay that must be carefully peeled away after the graphics are placed on the model. Applying all of the tiny maintenance graphics took time, but the results are more than worth the effort. Six sets of vintage-looking Curtiss propeller graphics are also included.

The assembly manual provides all of the necessary data to program one’s transmitter and prepare the P-38 for its first flight. FlightLineRC provides recommended settings for high and low rates and the all-important recommended center of gravity (CG) measurement.

The assembly manual illustrates the direction that each of the counter-rotating propellers needs to turn, but it does not offer obvious guidance when it comes to mounting each propeller to the correct motor. I used the illustrations on the assembly manual’s cover as my guide.

The manual’s recommended control throws were used. This included setting the elevator’s neutral position to negative 4mm and adding a little down-trim compensation during both stages of flaps deployment. I typically like to soften the response of the pitch and roll axis with 40% exponential, dialing that figure back to 25% on the yaw axis.


Flying

A pair of 3,000 mAh LiPo battery packs was used for the maiden flight with a conservative countdown timer of 5 minutes. As a point of reference for pilots trying to decide which batteries to use in this model, a pair of the Motion RC-recommended Admiral 35C 4S 3,000 mAh packs weighed in at 21 ounces and a pair of the also-recommended Admiral Pro 50C 4S 2,500 mAh packs weighed 20 ounces.

With plenty of extra space in the battery compartment, either set of batteries can be shifted fore and aft to achieve the correct CG. Although the Allison V-12 engines used in the full-scale P-38 provided 1,600 hp each, the 575 watts of power produced by each of the two brushless power systems used in this 1/10-scale model give it a comparatively blistering rate of acceleration.




With two 4S 3,000 mAh LiPo battery packs, there is still sufficient room under the canopy to shift the batteries fore and aft in order to hit the proper CG.


In order to perform a scalelike takeoff, I slowly and deliberately advanced the throttle. Pilots who have developed the habit of gunning and running their taildragger-equipped warbirds on takeoff to avoid dealing with the tracking challenges caused by propeller torque, will enjoy this model’s tricycle gear and counter-rotating propellers.

The P-38 tracked well during both taxi testing and takeoff. When deployed to the takeoff position, the four inboard/outboard flaps do a great job of reducing the amount of runway required to get this nearly 8-pound model airborne. With the gear retracted and half flaps left deployed, the nose did fall through a little. A few quick clicks of elevator trim (later corrected by reducing the amount of flap-to-elevator trim) had the Allied Green P-38L Lightning flying hands off at 50% throttle.

Slowing the movement of the flaps in the transmitter programming, if so equipped, can help mitigate most of the pitch changes associated with flap deployment. After the model was trimmed out and the flap-to-elevator mix properly tweaked, the P-38 exhibited hardly any discernible pitch changes when using the flaps.

The initial flights occurred on a nearly windless day. With the flaps stowed and the twin 12 x 7 three-blade propellers spinning at full rpm, this big P-38 grooves nicely! I found that it would go exactly where I aimed it, and it required minimal corrective-control inputs to hold its lines.

Top speed with the stock power systems is roughly 80 mph and it is enjoyable racing the P-38 around the pattern at full throttle. With slightly less than 150 watts per pound of performance on tap, the Lightning really rips!

Aileron rolls were crisp, with a surprisingly efficient roll rate. Inverted flight required holding a shade of down-elevator in the turns. The twin brushless outrunners lurking beneath the bright yellow cowls provide enough punch to perform large, sky-filling loops. Although pilots who live for speed might want to explore the optional higher-performance, two-blade power systems offered by FlightLineRC, this model’s overall scale in-flight appearance and performance using the stock power systems and three-blade propellers, is pleasing.

On one of the first flights, the model was repeatedly paraded up and down the flightline with the goal of capturing plenty of photos. With the throttles seldom pushed above 50% during this photo flight, 5 minutes of flying depleted a mere 1,100 mAh from each of the two Admiral 3,000 mAh batteries I was using.

Landing a warbird model properly often “separates the men from the boys,” and this airplane can make a pilot look mature beyond his or her years! The P-38 is well behaved throughout the entire conventional landing pattern. Getting the model back down to the runway in a scalelike fashion was not difficult. With the flaps fully deployed and the landing gear dropped, the P-38 bled speed nicely.

Any hint of an impending stall with everything down and dirty is signaled with a subtle wing rock. When getting too slow in the pattern, quickly adding in a little extra throttle would immediately stabilize the model in the glide slope. Whether using full flaps, half flaps, or no flaps, this Lightning is generally a pussycat to land!




With the four flaps fully deployed and the electric tricycle landing gear down and dirty, this nearly 8-pound model safely slows to a manageable approach speed when in the landing pattern.


The full-scale Lockheed P-38L saw service in an amazing variety of roles throughout World War II. FlightLineRC’s inclusion of a pair of magnetically retained and removable drop tanks bears testimony to the critical role that it played as a long-range escort fighter.

Flown both with and without the drop tanks, I noticed a slight increase in speed when leaving them off of the airframe, but the difference was negligible. I preferred the all-business appearance that they lend to the model, and chose to leave them attached for most flights. The magnets used to secure the drop tanks to the pylons are strong and did a great job of keeping them in place throughout the flight testing.


Conclusion

FlightLineRC has engineered a kit that incorporates many of the features that are most desired by pilots. I appreciate the attention given to small details such as painting the interior of the gear wells and flaps that are an authentic shade of zinc chromate green, including multiple sets of graphics to permit a pilot to customize his or her model, providing enough room for easy access to the flight batteries, and molded-into-the-foam wiring troughs to keep the wiring neat and concealed.

Although this model comes out of the box in a much more advanced state of scale detail than most foam-composition models currently available, pilots who love to customize their models to a high level of scale authenticity will appreciate the solid foundation and starting point offered by the FlightLineRC P-38L Lightning.
—Jon Barnes
barnesjonr@yahoo.com


Bonus video


Manufacturer/Distributor:

FlightLine RC/Motion RC
(224) 633-9090
www.motionrc.com


Sources:

Spektrum
(800) 338-4639
www.spektrumrc.com




Origin Skyhunter FPV Kit

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Written by Terry Dunn
A simplistic FPV aerial platform
Product review
Photos by Bryan McLarty
As seen in the April 2016 issue of
Model Aviation.


Specifications

Type: Electric FPV platform
Skill level: Intermediate
Wingspan: 70.9 inches
Wing area: 604 square inches
Length: 48 inches
Radio: Futaba 14SG 2.4 GHz transmitter; Futaba R7008SB receiver; three Futaba S3270SVi micro servos
Components needed to complete: Four-plus-channel radio system with three micro servos; 500-plus watt power system; adhesives; basic assembly tools
Price: $129.99


Test-model Details

Power system: Origin Hobby 950 Kv outrunner brushless motor; APC 11 x 5.5E propeller; Castle Creations Phoenix Edge Lite 50 ESC; FlightPower 4S 5,000 30C LiPo battery
Power output: 43.2 amps, 669 watts
Power loading: 145 watts per pound
Flying weight (with GoPro HERO3): 74 ounces
Flight time: 10-plus minutes
Wing loading: 17.6 ounces per square foot


Pluses

• Nicely molded foam parts.
• Adaptable to many equipment configurations.
• Good flying qualities.
• Long flight times.


Minuses

• Incomplete instructions.
• Awkward hand-launch required.
• All-gray color scheme is tough to see.


Product review

When flying with an FPV system, it is helpful to have an aircraft that is designed with FPV in mind. For instance, you’ll probably want a pusher or twin-powered model so that the propeller is not in your camera’s field of view. Your model will also need a place to mount the FPV equipment and the ability to carry the extra weight.

As FPV flying continues to rise in popularity, more manufacturers are producing models that include such design features. The Skyhunter FPV from Origin Hobby is one of those off-the-shelf offerings. In spite of the high-tech purpose of the Skyhunter, the airplane is deceptively simple.


In the Box

The model’s main components are molded from EPO foam. All of the foam parts in my kit were cleanly molded and the paint was nicely applied. The wing spar and tailbooms are made of large-diameter composite tubes. There are several large, factory-applied decals on the wings and fuselage. I’d prefer to handle that job, but they were adequately applied.

Origin Hobby offers a power set for the Skyhunter that includes a 950 Kv brushless motor and propeller. Interestingly, the package indicated that a 10 x 8 propeller was included, but a 12 x 6 propeller was inside. The mismatch was of no consequence because I ended up using an APC 11 x 5.5E propeller.




The Skyhunter FPV is a simple model featuring molded EPO foam components and composite tailbooms.





The Origin Hobby 950 Kv brushless motor fits perfectly on the Skyhunter’s predrilled firewall. The author liked the performance of this motor when using a 4S battery and an APC 11 x 5.5E propeller.


To round out the power system, I used a Castle Creations Phoenix Edge Lite 50 ESC and a FlightPower 4S 5,000 mAh 30C LiPo battery. There is ample room in the fuselage to use large-capacity batteries or even multiple packs in parallel.

The Skyhunter is only a three-channel airplane (aileron, elevator, and throttle). You might wish for more channels if your FPV system utilizes a gimbal-mounted camera with head tracking. I used a Futaba 14SG transmitter and an eight-channel R7008SB receiver. The system is overkill channelwise, but it provided me with the flexibility to add telemetry sensors to the model via the receiver’s S.Bus2 port. I plan to later install a GPS module, variometer, and voltage meter.

The manual calls for three 9-gram micro servos. Not only is this is a sizeable model with large control surfaces, it will be carrying expensive camera and FPV equipment, so I would hesitate to trust bargain-bin servos in this application. Although heavier (16 grams), Futaba S3270SVi servos fit into the molded servo pockets. In addition to programmability options, these servos provide metal gears and approximately double the torque of most micro servos.




Futaba S3270SVi servos fit nicely in the molded slots intended for 9-gram units, and provide better durability and torque on this large model.


Assembly

Origin Hobby includes a printed manual with written instructions and photos. It covers the basic assembly steps, but omits a few details such as receiver placement and wire routing. Anyone who has built a few ARFs should have no trouble sorting things out.

The first assembly step involves nestling the servos in their molded pockets. The manual suggests using servo tape and hot glue to hold them in place, but I substituted GOOP adhesive. The E/Z connectors that attach the pushrods to the control horns are unique. The screw that locks the pushrod in place is also the pivot shaft for the connector. It works well, but you must be careful to prevent slop in the linkage.

The Origin Hobby motor perfectly matched the predrilled holes on the firewall. I routed the motor wires through the air exit below the motor. I used 13-gauge wire to extend the motor leads from the ESC by 6 inches. This allowed me to place the ESC near the forward edge of the plywood tray within the fuselage, which worked well for center of gravity purposes. I secured the ESC to the tray with a zip tie.

I used foam-safe CA glue to adhere the vertical stabilizers to the mounting brackets found on each end of the horizontal stabilizer. Although the glue joints were solid, I thought that the vertical stabilizers were not rigid enough and could potentially flutter during flight. A single 45° brace on each vertical stabilizer shored things up.

I used scrap pieces of 3mm x 1mm carbon-fiber strips embedded and glued into the foam. Carbon-fiber rod or fiberglass rod would work equally well. Perhaps even a bamboo skewer could work.




The author added braces made of carbon-fiber strip to make the vertical stabilizers more rigid.


All of the main airframe components are attached to each other with hardware. The wing panels bolt to the fuselage and four clamps secure the tailbooms to the tail feathers and the wing. With all of the pieces assembled, the Skyhunter is a large airplane.

Take a moment to consider how you will break down the model for transport and/or storage. This will dictate how you configure the necessary servo extensions. You will want the ability to separate the relevant servo leads at the same junctions where the airframe will be split.

I decided that I would transport my Skyhunter by removing the tailbooms from the wing, leaving the wing attached to the fuselage, and the tail feathers attached to the tailbooms. To accomplish this, I extended the lead for the elevator servo by approximately 36 inches. The lead is routed through the starboard boom and the connector emerges from the front of the tailboom with a little slack.

The receiver is mounted in the middle of the plywood tray in the fuselage. Eighteen-inch extensions were required to connect the receiver to the aileron servos and the other extension on the elevator servo. After tucking the wires into the channels on the underside of the wing, I covered them with strips of Blenderm tape.

When I arrived at the field with the Skyhunter, I placed the tailbooms in their sockets on the wings. As the tailbooms became fully seated, I made sure that the elevator servo lead emerged below the wing. I then connected the elevator servo extensions and tightened the tailboom clamps. The process takes a minute or two.

The battery must be mounted in the forward part of the fuselage for proper balance. I set down two side-by-side strips of self-adhesive hook-and-loop tape on the floor of the battery bay. The batteries are configured with hook-and-loop tape. This gives me flexibility to utilize different battery arrangements.

The hatch for the battery bay is a two-part foam piece. With the upper part omitted, the bottom piece provides a broad platform to mount FPV equipment. My preferred camera mount features 1/4-20 female threads on the base. I drilled a 1/4-inch diameter hole through the foam (with a sharpened brass tube), which allows me to attach the camera mount to the hatch with a nylon 1/4-20 thumb screw.

I initially flew the Skyhunter with a GoPro HERO3 (with case) in the camera mount. With that camera in place and the battery fully forward, the model balanced precisely at the suggested location.


Flying the Skyhunter

Before the first flight, I was concerned that the Skyhunter’s gray color scheme would make visual orientation difficult. Even FPV airplanes require good color contrast for the spotter to keep track of it. To mitigate this issue, I painted the outer part of the left wing with bright orange spray paint and black accents.

Hand-launching the Skyhunter presents a couple of challenges. Not only is it a significant mass to be hurling, the girth of the fuselage makes it somewhat difficult to grip. I also couldn’t ignore the large propeller located near the launcher’s grasp.

I decided that it was best to have an assistant throw the model while the motor was shut down. I then powered up as soon as the airplane was clear of the launcher. Although it isn’t a casual affair, this process is safe and works consistently. After several flights, I added simple, removable landing gear that permitted rolling takeoffs and landings.




After several hand-launched flights with the Skyhunter, the author added this simple landing gear arrangement to allow for rolling takeoffs and landings.


My first several flights with the Skyhunter were strictly line of sight, although I did have the GoPro attached and operating. I found the airplane easy to fly. The power system provides plenty of push for strong climbs and aerobatics. It also flew well at lower power settings. I was easily able to log flights lasting 10 minutes and longer with each charge.

The Skyhunter behaves like a sport airplane. It is capable of rolls, loops, inverted flight, and more. When performing these maneuvers, I often found myself wishing that the model had rudders, yet when I flew sedately in to get smooth video, I didn’t miss having yaw control.

Landing the Skyhunter is no problem. It slows down well and the control surfaces maintain good authority all the way to touchdown. This one is easy to grease in.


Flying FPV

After a handful of line-of-sight flights with the Skyhunter, I decided to try FPV. To optimize signal latency, many FPV setups use a security-type camera for the video stream and a separate high-definition camera for recording. In this case, however, I thought that the simplicity of using a single camera for both functions outweighed the latency benefits of a two-camera system.

Although I could have used the HERO3 as my FPV camera, I decided to try a newer and less expensive unit, the Foxeer Legend. I mated the Legend with the Lumenier TX5G6R—a 600 milliwatt, 5.8 GHz video transmitter from GetFPV. On the video receiving end, I used Skyzone goggles.

I prefer to take off and land via line of sight, even if I have a spotter with me. I lower the FPV goggles into place when I get to a comfortable altitude. The Skyhunter does not present any problems when flying FPV. It provides a nice, smooth ride with a great view.

The Foxeer Legend turned out to be a good FPV camera for this application. On an airplane with moderate speed, such as the Skyhunter, the latency of the video-out signal was hardly noticeable. I was also pleasantly surprised by the performance of the video transmitter.

I left the stock antenna in place to see how it would perform. I did not experience any loss of signal while orbiting my RC field. Keep in mind that you’ll need an amateur radio license to legally operate this, and most other FPV video transmitters. Obtaining the license is not difficult and you’ll gain a better understanding of how the equipment works.


Conclusion

FPV flying is a fun and unique segment of the RC hobby. To get the most out of your experience requires a model with certain features.

The Skyhunter is a no-frills model that provides these features in a simple airframe. It is also large enough to carry an array of FPV setups and batteries. It is a blank FPV canvas waiting for you to configure it to your liking.

—Terry Dunn
terrydunn74@gmail.com


Bonus video:


Manufacturer/Distributor:

Origin Hobby
tanrong@originhobby.com
www.originhobby.com

Hobbico
(800) 637-6050
www.towerhobbies.com


Sources:

Castle Creations
(913) 390-6939
www.castlecreations.com

ElectriFly
(217) 398-8970
www.electrifly.com

Flight Power
(800) 637-7660
www.flightpowerusa.com

Futaba
(217) 398-8970
www.futabarc.com

GetFPV
(941) 444-0021
www.getfpv.com

Foxeer
info@foxeer.com
www.foxeer.com



Electrics - April 2016

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Written by Greg Gimlick
Contributed column
As seen in the April 2016 issue of
Model Aviation.


Wake up your mess!

It’s flying season! I know some of you have the luxury of flying all year round, and in North Carolina, I consider myself one who has that luxury, although I try to adhere to a 50/90 rule—not flying when it’s below 50° or above 90°—but I seem to violate my own rule way too often.

All of that aside, it’s time to wake up your flying gear for the season. I’m going to discuss some things to look at.


Batteries

This is probably the most important part. You did put all of your packs at storage level, didn’t you? The engineers can fight it out as to just what that level is, but for most of us, it counts if it’s somewhere between charged and discharged. Most chargers will use approximately 3.83 volts per cell. Anything close to that is fine.

Before doing anything to those packs, pull out your cell checker and see what the pack’s total and voltage per cell is. If one is extremely low, make a note of it and move on. Put the pack on balance charge and set it for a gentle rate of 1C or less. Even if you have a high charge-rate pack, I suggest a couple of gentle charges to help it get back into action after a long rest.

If you have a charger or device that measures internal resistance (IR), check that too. See how it compares to your initial cycles of that pack. (You did start a battery log and list those baseline numbers when the pack was new, didn’t you?)

I know I sound like a feisty old school marm, but even some minimal documentation will give you a picture of your pack’s health. I’m not so much concerned with these numbers being laboratory accurate as I am being able to see a trend.

I try to use the same device to keep track of the IR data for my packs. I have several, but they don’t all read the same, and using the same one gives me the consistency I’m looking for.

If all of the cells are showing a slight increase in IR, I attribute it to an aging pack, but it’s still matched across the cells. If one cell is considerably higher than the others and higher than its earlier reading, then I see it as one cell going bad and expect the battery pack to show signs of going bad soon. I usually relegate those packs to airplanes that don’t push the batteries too hard and nurse them along.

Packs that have been in storage will come back to their old selves after a couple of cycles. You can do that gently with your charger or take them to the field and put a couple of easy flights in on them between charges. Don’t max them out until they have had a chance to get back into condition.




The Hyperion EOS Sentry 3 is checking the author’s high-voltage LiPo battery pack for balance. It’s spot on!





The screen on the author’s Hitec X2 AC Plus charger shows the pack on Channel A being checked for IR, while the pack on Channel B is set for balance charging at 1C.


ESCs

There isn’t a lot to do here. Check the wiring to ensure the insulation wasn’t damaged during last flying season. Look at your connectors for signs of degradation (dark spots from arcing, etc.). If they show signs of wear, or don’t connect solidly, change them.

If your ESC has a data logger, clear the data and see if the firmware is up to date. If you do update the firmware, be sure to first mark down your old settings. Seldom will an update change a setting, but you need to be sure when it’s done.


Motors

Look to see if there is dirt visible in the motor, or for those of us in the South, look to see if a dirt dauber has taken up residence in the motor. Is the propeller adapter secure and the shaft straight? Is the propeller in good shape? Some propeller adapters are aluminum and if you’ve changed propellers several times, look to see if you’ve “stretched” any of the threads from overtightening the prop nut. If so, replace it.

Does the motor turn over smoothly? If not, check for dirt inside of it or a sticky bearing. Bearings can be lubricated, but be sure not to over-oil them. You don’t want oil running all over the place and you want to be sure to use a fine bearing oil—usually a drop from a needle applicator is enough.

Check the wiring for wear spots or bad connectors. The usual place for trouble on motor wires is where they exit the motor case. Check the motor mount itself to ensure its security. Are all of the bolts still tight? You did use threadlocker on them, right?




The motor mount in the author’s Sequence is checked for security, along with all the wiring and attachments.


Airframe

All of the usual precautions apply here, whether you are flying electric, glow, or gas. Check everything to make sure the glue joints are secure.

Check the wing bolts. Nylon bolts are often used and the threads can become crossed or stretched during the flying season. Check that the hold-down plates are secure.

Look at all of your wiring. Are the wires secured, or are they a big jumbled mess flopping around? You don’t want them coming in contact with your receiver antennas.

Are all of the control rods still secure? Do any servo gears feel as though they’ve been stripped? Are the landing gear attachments still secure? How about oiling those squeaky wheels while you’re at it?


The Total Picture

After you’ve gone through all of these individual checks, take a step back when you’re ready to fly and see if everything looks okay. You’d be surprised at what we sometimes miss.

Make your first flights of the season gentle ones, and do a thorough postflight inspection of everything. Good preflight and postflight inspections help ensure a happy and safe flying season.


Springtime in Toledo!

If it’s spring, and I’ve got a big grin on my face, you know that something is about to happen: the Weak Signals Toledo Show: R/C Model Expo.

This year, the Toledo Show is April 1-3 at the Seagate Convention Centre in Toledo, Ohio, so punch that into your GPS and make your plans. Check the event website, listed in “Sources,” for more information.

The event is in its 62nd year and no two years are the same. Nearly every vendor or manufacturer you see mentioned in my column throughout the year is represented. You can check out the latest and greatest new items and talk with the people who design, manufacture, and sell them.

It’s like a great homecoming! Whether you’re new to electrics or an old hand at them, there is always something to be learned by talking to the people on the show floor or attending one of the many seminars. If you’re looking for deals, they’re available throughout the building from the main floor, to the swap shop, to the annual auction.


Wrapping It Up

There you have it—a leap into spring and a new flying season. I hope to see you in Toledo. Stop by the AMA and Model Aviation booths and say hello.

Be sure to check out all of the electric entries on the competition tables. You might even run into and talk to some great modelers such as Keith Shaw, Laddie Mikulasko, or Dave Platt.
Greg Gimlick
maelectrics@gimlick.com


Sources:

The Toledo Show: R/C Model Expo
www.toledoshow.com




RC Scale - April 2016

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Written by Stan Alexander
Contributed column
As seen in the April 2016 issue of
Model Aviation.


Wow, time flies when you’re having fun! I’ve been working on my Cessna and looking forward to spring as well as the flying season. The basic fuselage is now framed up and the wing panels are built.

Cessna built several versions of the Airmaster. To my knowledge, the C-165 was the last one manufactured before World War II. The next single-engine, tail-dragger Cessna was the C-190—a completely different aircraft. Cessna discontinued tail-draggers after the C-180 and C-190 to C-195 series, and only built tricycle landing gear-equipped aircraft after that.

Documentation about your Scale model is the starting point, before you ever cut or glue a piece of wood. It’s much easier to document an aircraft before you build it, rather than try to fix something you forgot or changed later.

For Fun Scale, the documentation is simple, but Sport Scale requires more preparation. I like to have the drawings, photos, plans, and any other documentation about the full-scale airplane I’m building, whether it’s going to be a competition model or not.

The Pietenpol Air Camper isn’t a competition airplane. It’s in its element when flying low and slow on a still summer afternoon. The Cessna Airmaster, however, will be entered in Sport Scale competition.

While looking for an attractive color scheme, I came across a black and international orange full-scale aircraft with a white pinstripe. First purchased by the government to map commercial aircraft routes, I believe the paint scheme is original.

I’ve met the owner and talked about the airplane. He even sent me part of the fabric from the fuselage because it had just been recovered and painted. I probably have roughly 75 photos of the full-scale airplane.


Cessna C-165

I’ve also included some additional construction photos of the Jerry Bates-designed 1/4-scale Cessna C-165 Airmaster. The next step is to assemble the forward fuselage and mount the Zenoah G26 gas engine and fuel tank. I hope to have all of that done next month.


Cessna C-165 Construction Photos

Cessna C-165 Airmaster Construction


Learning From Scale Contests

If you look at the “Contest Calendar” section in Model Aviation or the Event Calendar on the AMA website, you will see upcoming contests in your region. They might be Scale contests, Scale fly-ins for warbirds, or Dawn Patrol events. No matter which of these gatherings you choose to attend, you will see some of the best aircraft and builders in the country.

Are you afraid that your model isn’t good enough? Take it anyway. As long as you can fly it, take it and learn from other Scale modelers. Last year, Scale modelers gathered at the Rough River Dam State Resort Park in Falls of Rough, Kentucky, to attend Scale seminars that covered a variety of subjects.

This year, the Mint Julep, a National Association of Scale Aeromodelers (NASA) Scale Classic open contest, will be May 20-22 at Rough River Dam State Resort. All AMA RC Scale classes are offered. If you are thinking about going, make your reservations early. Rooms are limited, and the campground is currently closed for renovations. I look forward to this and many other events throughout the year!

Let me know about activities in your area.


The Toledo Show: R/C Model Expo

The Toledo Show: R/C Model Expo will be held April 1-3, in Toledo, Ohio. Look for several Scale organizations at this trade show. Two Scale seminars will be held on Friday and Saturday in the outer meeting rooms (check the schedule at the event).

Toledo is a great place to get good deals on your modeling supplies, and sometimes it’s the little stuff that is important when building a Scale model. This doesn’t even begin to scratch the surface of the huge variety of models that you’ll see.


2016 AMA Nats

I previously mentioned that the AMA Scale Nats has changed dates this year. Instead of being held in July, the Nats will take place June 24-26. The field will be open on Wednesday and Thursday, June 22-23, for practice, and static judging will be held on Friday, June 24.

RC Nats Event Director John Boyko has a list of events scheduled for each evening, which should enhance your time while in Muncie, Indiana. Movies, a raffle, a banquet, and an auction are all included.

A Hangar 9 F4U Corsair Giant Scale warbird will also be raffled off. Built and ready to fly, the 86-inch model is powered by a Saito 60cc gas three-cylinder motor, with ElectroDynamics switches, sequencing gear doors, bombs, and a drop tank. Air retracts complete the weathered and detailed model.




A de Havilland Sea Hornet takes off during the 2015 Scale Nats. The big twin-engine fighter was electric powered.





Jack Buckley’s 1/3-scale de Havilland Tiger Moth in civilian markings is an impressive model.





Jeff Foley’s scratch-built Messerschmitt Bf 109E is one of the best Bf 109s I’ve ever seen. The weathering on the model is great!


NASA Scale Classic

The 2015 National Association of Scale Aeromodelers (NASA) Scale Classic was held in September at the Lexington Model Airplane Club field in Lexington, Kentucky. In addition to all of the typical AMA RC Scale classes at the Nats and regional events, the NASA Scale Classic features an annual theme.

Mark Lanterman had the idea to start the NASA Scale Classic and has worked hard to make the event a success. I wish him and all of the NASA volunteers who work to make this happen continued success with this year’s event.

The inaugural event’s theme was World War I aircraft. Last year it was pre-World War II racers. The turnout was better than expected. Steve Eagle won the 2015 NASA Scale Classic with a Rearwin Speedster. Steve had ignition problems before the event started, but several of his fellow competitors helped him sort out the issues. These are the types of modelers and friends that you see at Scale contests.

A themed event or class isn’t required to have the full 10 maneuvers, unlike an AMA competition class. These are run under “local rules,” where the flight routine can be shortened and the class is fitted in with all of the others. The class can be held at the beginning or end of the day, depending on how many airplanes need to be flown. Like other Scale classes, it’s fun.

The 2016 NASA Scale Classic will have a different themed event: WW II trainers. These models can be anything from a Piper J-3 Cub, to a North American AT-6, or a Cessna T-50—as long as the aircraft was used for military training. I know there are many Fairchild PT-19s and North American T-6s out there, in addition to all of the J-3 Cubs!

Look for more information about the 2015 NASA Scale Classic in upcoming issues of the online section of this column, as well as information about the 2016 event.

Fair skies and tailwinds.


NASA Scale Classic Photos

Model Aviation Magazine - 2015 NASA Scale Classic


Sources

NASA
www.nasascale.org

Cessna Airmaster plans
www.jbplans.com

RC Airplanes Simplified
www.rc-airplanes-simplified.com

Bob Holman Plans
(909) 885-3959
www.bhplans.com

The Toledo Show: R/C Model Expo
www.toledoshow.com

AMA Nats
www.modelaircraft.org/events/nats.aspx

John Boyko
sir-smoothie@earthlink.net

Zap
www.zapglue.com

Minnesota Scale and Giant Scale Big Birds
davidpandersen64@msn.com
www.mnbigbirds.com




Flying Site Assistance - April 2016

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Written by Tony Stillman
Flying Site Coordinator
Monthly AMA News Column
As seen in the April 2016 issue of
Model Aviation.


Registration and Section 336

As you know, AMA has been dealing with FAA issues on behalf of its 185,000-plus members. This effort has taken many twists and turns. Much has happened quickly and it has proven difficult to keep all members informed.
A major problem is for those members who are not on the Internet and/or do not have email capability. Because of the fast-paced movement of these FAA issues, providing timely information to these members is almost impossible! Our best way to share information with them is through Model Aviation. Although this is a great resource, you must remember that quite a bit of time is required to create, print, mail, and deliver this product to you.

Anywhere from 60 to 90 days passes from the start of creating a new issue, until it sits in your mailbox. Because of this lengthy process, news is several weeks old and possibly out of date by the time you receive it. Still, there are some things that we can relate to you that remain current when you read it.

I have a few items that I want to bring to your attention. The first one concerns FAA registration. There is much confusion about the FAA registration and what role clubs and club officers should play in monitoring or enforcing this federal requirement. The AMA policy on this is plain––we are not involved in any way in the enforcement of this registration! That means that neither AMA clubs nor members should concern themselves about someone’s registration situation.



Available for purchase.

These identification labels are available for purchase through the AMA store at www.modelaircraft.org/shopama. Click the image above to be taken directly to the product's listing in the web store.

Our stance has always been that this is a federal issue and one that is between the individual and the federal government. Although we advise our members to follow all laws, it is up to the club to decide if it wants to require that its members be registered.

It is also possible that the landowner may require the fliers to register, so the club might have to ask for this information; however, typically this should not be a requirement. A good analogy is that of your driver’s license. Clubs don’t ask to see your driver’s license when you come to the flying site.

Some have asked, “If I don’t register, will it affect AMA membership and insurance?” No, it won’t! AMA does not ask you for that information when you become a member, nor is it asking for it now. Neither AMA membership nor AMA insurance coverage is dependent on FAA registration!

Now, about your number … “Do I have to put my FAA registration number on my model?” Yes, you do. You also are required to put your AMA number on it. AMA has always required that, so that is nothing new. We were hoping that the FAA would allow AMA members to simply use their AMA numbers, but that has not yet panned out. It might still happen, but right now, the law states that you must have the FAA number on your aircraft.

You can purchase labels from AMA, or create your own.


Video: Labeling Your Aircraft

Tony Stillman explains why labeling is important and provides tips to model owners on how to get the job done.



AMA is working to help members understand the federal law that requires all RC model fliers who operate within 5 miles of an airport to contact the airport and let them know of your activity before flying. This is not a suggestion or a request; it is the law! If you are flying in your backyard, at a park, or at a local club field, you must still let the airport know. If the place you are flying at is a club field, then AMA has been working with club officers on the notification requirements, and has fulfilled or is working on fulfilling, the notification requirements. The club notification would include the activities of the individual club members.

Included is a portion of Section 336 of the Public Law 112-95, FAA Modernization and Reform Act of 2012. While you read through this, remember: this is the law. There are limits to what non-AMA members can do, such as being limited to 55-pound aircraft, unless they are a member of a community-based organization and follow the organization’s safety program and guidelines.

(a) IN GENERAL.—Notwithstanding any other provision of law relating to the incorporation of unmanned aircraft systems into Federal Aviation Administration plans and policies, including this subtitle, the Administrator of the Federal Aviation Administration may not promulgate any rule or regulation regarding a model aircraft, or an aircraft being developed as a model aircraft, if—
(1) the aircraft is flown strictly for hobby or recreational use;
(2) the aircraft is operated in accordance with a community based set of safety guidelines and within the programming of a nationwide community-based organization;
(3) the aircraft is limited to not more than 55 pounds unless otherwise certified through a design, construction, inspection, flight test, and operational safety program administered by a community-based organization;
(4) the aircraft is operated in a manner that does not interfere with and gives way to any manned aircraft; and
(5) when flown within 5 miles of an airport, the operator of the aircraft provides the airport operator and the airport air traffic control tower (when an air traffic facility is located at the airport) with prior notice of the operation (model aircraft operators flying from a permanent location within 5 miles of an airport should establish a mutually-agreed upon operating procedure with the airport operator and the airport air traffic control tower (when an air traffic facility is located at the airport).

Note that this refers to community-based organizations––the AMA, or a similar organization. What has happened here is that Congress has created a law that allows AMA members to continue to enjoy all modeling disciplines! Our hobby is protected by this law, although the FAA is working to limit us.

It is vital for us to continue working with Congress to make sure that these protections continue when the 2016 Reauthorization Bill is up for a vote. AMA has already spent many hours with House and Senate leaders and will be spending more time there throughout the next few months.

So, take heart. AMA is working for you! This will be a long, difficult road, but we will stick with it. We need your support to continue this fight! When the call comes from AMA to ask you to write a letter or send an email, please be ready to respond. We are counting on you!

—Tony Stillman
fsac@modelaircraft.org




AMA voices opposition to sUAS bills in Rhode Island / New Hampshire

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Written by Andy Argenio
District I Vice President
www.amadistrict-i.org
Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont
AMA News Column
As seen in the April 2016 issue of
Model Aviation.


With roughly 400,000 drones sold for Christmas 2015, there are now more than 1 million being flown in the US. In 2015, FAA reported 764 hazardous incidents involving “near misses” between drones and airlines, and drone flights in sensitive and prohibited locations putting people and property in danger. AMA’s analysis of FAA’s incident reports showed 27 were actually described by pilots as a “near miss.” Two of these crashes involved military operations, others were commercial flights, and some were legal, safe flights below 400 feet. FAA’s incident analysis and reporting doesn’t accurately quantify or qualify the number or type of hazardous incidents.

The media’s reporting of misleading FAA reports have prompted the rise in state and local bills as legislators respond to their constituents’ fears. In 2015, we identified, tracked, and opposed state and local sUAS/drone legislation with letters, testimony at hearings, and speaking directly to lawmakers. These efforts amended or prevented the passage of bills that could have adversely impaired model aircraft flying in New England.

In January 2016, while searching state legislative calendars for sUAS/drone bills that might be problematic for AMA members’ flying, we found two bills in Rhode Island and two bills in New Hampshire that we needed to oppose.

The first, New Hampshire HB602, was introduced on January 8, 2015. The item of most concern was “No person shall operate a drone at an altitude below 400 feet within 5 miles of any airport in this state.” Our opposition to this bill was based on the nine AMA clubs that had operated safely, without incident, at these types of locations for decades with permission from and blessings of the airport authorities.

As a result of our testimony and recommendations on February 10, 2015, the bill was amended to read “No government or person shall operate a drone within 5 miles of any airport in this state in a manner that does not comply with relevant federal law and Federal Aviation Administration regulations and guidelines in effect at the time.” This amendment was passed on January 7, 2016; however, the bill will proceed to the Senate and must be watched for any possible amendments requiring additional AMA opposition.

The second bill, New Hampshire SB459, was introduced on January 6, 2016. The item of most concern was that “drones flies no higher than 100 feet above land.” Two new associate vice presidents (AVPs), Daren Hudson and Ted Wojcik, along with Jay Francis, spearheaded the opposition to the bill by writing and speaking with senators and bringing together a team of 20 members to oppose and/or testify at the January 26 hearing.

Their opposition was based on the hazards of conflicts with other model aircraft, pilots, or spectators when flying in a flight box with a compressed altitude of 100 feet above ground level, allowing little time for error recovery. They also relied on the FAA’s recent notification fact sheet, State & Local Regulations of UAS, which essentially informs local lawmakers that FAA views its authority to regulate UAS safety operations in the national airspace as pervasive and exclusive.

As a result of the AMA team’s opposition and recommendations, the bill was sent for interim study and is unlikely to appear again without being amended. In order to really appreciate the breadth and depth of AMA member testimony, you can listen to audio of AMA AVPs’ statements below.

The next two bills from Rhode Island legislators, HB7334 and HB7511, have been opposed in letters of opposition, but until hearing dates and testimony is made, I will hold off on a status report.

We are in the process of creating AMA District Advocacy & Government Relations Officers to represent each state. If you have an interest in becoming a team member for your state, please contact Daren Hudson at dth7@comcast.net or me.

Thank you to all of those AMA members who participated in opposing unnecessary sUAS/model aircraft legislation.

—Andy Argenio
brandshobby@gmail.com


Listen to AMA's testimony





Great Planes Twinstar EP ARF

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Written by Tom Sullivan
A nice-performing twin-powered sport model
Abridged product review
Photos by the author
Read the full product review in the May 2016 issue of
Model Aviation.



Specifications

Model type: Sport ARF
Skill level: Intermediate
Wingspan: 47.5 inches
Wing area: 392 square inches
Airfoil: Semisymmetrical
Length: 42.5 inches
Weight: 4 to 4.25 pounds recommended
Power system: Two RimFire .10 brushless motors; two 25-amp brushless ESCs; 3S 3,800 mAh LiPo battery
Radio: Minimum four-channel transmitter and receiver; four micro servos
Street price: $139.98


Test-model Details

Radio system: Tactic TTX850 transmitter; Tactic TR625 receiver; four S3115 Futaba servos; two Futaba Y harnesses; and two 12-inch servo extensions
Power system used: Two RimFire .10 brushless motors; two 25-amp brushless ESCs; 3S 3,800 mAh LiPo battery
Flying weight: 3.75 pounds
Flight duration: 6 to 10 minutes


Pluses

• Laser-cut balsa and plywood used for construction.
• Includes all control hardware, wheels, and fiberglass wheel pants and cowl.
• Airframe comes precovered with MonoKote iron-on film.
• Vacuum-formed nose is painted to match the covering.
• Firewalls are predrilled for the RimFire motors and include preinstalled T-nuts.
• The front “cockpit” area is a removable hatch held in place with magnets, allowing quick access to swap out battery packs.
• It can go from the box to ready-to-fly in roughly 5 hours.


Minus

• The design limits the physical size of batteries that can be used. I’ve outlined a quick, easy modification that forgoes this limit.


Abridged Product Review

I think all of us need that go-to airplane—something that is small enough to throw in a car and doesn’t require much support equipment, yet is big enough to have fun with. I’m reviewing a model that might fill that spot for many of us.

It is of one the newest offerings from Great Planes: the Twinstar EP. This aircraft is a smaller, electric-powered design with tricycle gear and twin motors mounted outboard on each wing. If I’ve caught your attention so far, trust me; it gets better as we go. Let’s dive in.

My reviews start by opening and inspecting all of the parts as I arrange them for pictures. A few things caught my eye. With the exception of the two nacelles and the nose cone, the entire airframe is assembled from laser-cut balsa and plywood, making it lightweight, but strong. All of the airframe pieces are precovered with MonoKote in a blue and white color scheme, with red and black trim.




The Twinstar EP ARF is built up from balsa and plywood construction. It comes with a complete hardware set, including wheels, control hardware, and three plastic spinners.


The nacelles and the nose cone are vacuum-formed plastic. The nose cone’s walls felt thin, so I made a note to be careful not to dent it during assembly.

A 24-page printed manual is included, along with a couple of addendums. These addendums cover the nose gear steering pushrod and the application of the windscreen stickers. A large sheet of self-adhesive stickers is included, giving the Twinstar the look of cockpit windows, and some fake N-numbers for a realistic appearance.

Rounding out the parts count is a complete hardware kit, including the wheels, pushrods, clevises, hook-and-loop straps, and two red plastic spinners. One thing I didn’t expect was the inclusion of a Y harness for the power system.



To access the battery compartment, the front cabin area doubles as a hatch. It’s securely held with four magnets.





This shot of the underside of the wing shows the aileron servo installation as well as the main gear installed. All of the hardware you see is included in the box and installs in minutes.





Each of the Twinstar’s motors mount to premade motor boxes. There’s plenty of room for a variety of motors and speed controls and everything is cleaned up with the included nacelle covers.



Flying

If you’ve read any of my previous reviews about electric-powered models, I’m all about using arming switches to protect my fingers! There are no provisions for an arming switch in the Twinstar; however, if you use the power setup I used in this review model (specifically the ElectriFly ESCs), these speed controls have an electric arming sequence. Before the propellers will move at all, the throttle stick must be moved to low then advanced to high throttle, and then returned to low. After a few beeps, only then is the power system armed.

In trying to categorize how the Twinstar flies and where it fits in, I think it is best described as an all-around sportster. It’s not great at any one thing, and by that I mean it’s not an aerobatics aircraft, it’s not a Scale model, it’s not a high-speed racer, nor is it a trainer. It is simply a good, all-around model that you’ll have fun with.

There’s plenty of power for eye-catching high-speed passes, fairly powerful climbouts, and eating up a lot of sky. But there’s also a good amount of control for a nice variety of loops, rolls, spins, snaps, and more. Granted, you wouldn’t catch any full-scale twin such as this on a low-level inverted pass, but the Twinstar does it with ease and doesn’t need full power to do it.


Conclusion

The Twinstar is a fun little design that offers a scalelike look without the fuss. Its twin powerplants make it unique and give it a great sound in the air. Depending on your use of the throttle stick, you can get a good, 6- to 8-minute, highly aerobatic flight, or a longer 8- to 10-minute flight just cruising around the sky.

It goes together quickly and has proven itself to be the perfect size to throw in the trunk of my car so I’ll have it with me for a quick flight on my way home from work.
—Tom Sullivan
tmsullivan@roadrunner.com


Bonus video


Manufacturer/Distributor

Hobbico
(800) 637-7660
www.greatplanes.com


Sources

Twinstar manual
http://manuals.hobbico.com/gpm/gpma1609-manual-v1_1.pdf

FlightPower
(800) 637-7660
www.flightpowerbatteries.com

ElectriFly
(800) 637-7660
www.electrifly.com




Hyperion Vengeance 280 FPV Racer

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Written by Greg Gimlick
A durable and inexpensive racing machine
Product Review
Photos by the author
As seen in the May 2016 issue of
Model Aviation.




Specifications

Model type: Electric RTF quadcopter
Skill level: Intermediate to advanced
Propeller size: 6040 clockwise and counterclockwise
Size: 250 racing class
Diagonal: 280mm
Length: 8.5 inches
Width: 10 inches
Height: 3.19 inches without antenna or 4.45 inches with antenna
Weight: 20.7 ounces with camera and battery
Power system: Four 2,204 to 2,300 Kv high-output brushless motors; four Custom Compact BL-Heli 20-amp ESCs
Flight battery: Hyperion G6 HV 60C to 80C 3S 1,800 mAh LiPo
Flight controller: NAZE Spec 32-bit Flight Controller 7DOF (with BMP sensor)
Video transmitter: 5.8 GHz autoscan 32-channel VTX w/race-band VTX selectable 20 milliwatt/200 milliwatt output and tuned 5.8 GHz; CloverLeaf Skew-Planar antenna
Camera: 600TVl 1/3-inch CMOS high-quality FPV camera
Flight duration: Five-plus minutes
Street price: $299.99

Pluses
• Fully assembled plug and play.
• Programmable frequencies with LED indicators on VTX.
• Remote controllable, stabilized camera gimbal.
• 8° forward-tilt motor mounts.
• Tough carbon-fiber construction.
• Ready for optional GPS modules.
• Low-voltage alarm.
• Terrific flight characteristics.
• Incredible crash survivability.

Minuses
• Requires PWM input to remotely control gimbal angle.
• Fidgety on-screen display programming with no documentation.


Product Review

I’ve gotten the bug for 250 FPV racing and my expectations were high when I ordered the Vengeance 280. I’ve had good experiences with Hyperion motors in the past, so the bar was already high when I opened the box. I was not disappointed when I saw the contents. It was obvious right from the start that it was as close to being ready to fly as possible.

Everything was nestled securely in custom-cut foam packaging, so the box can double as a carrying case. The assembly was neat and tidy. No wires needed to be secured or tidied before going to the field. Everything was sandwiched between the top and bottom frames so the pieces would be protected from whatever abuse I might inflict upon the aircraft. My first impression was good!


Assembly

There isn’t any assembly to be done other than to secure the camera platform and install your receiver. The camera/gimbal assembly is attached to a carbon-fiber platform that attaches to the top frame of the Vengeance with five rubber isolators.

This is a standard method for mounting a camera and I recommend adding a couple of small zip ties for insurance. I run these through the center of the isolators and leave them loose enough to not interfere with the purpose of the rubber mounts. The purpose is simply to keep the platform from coming completely loose in the event of a crash.

If you don’t take this precaution and it does come loose, the camera will pull the connector out by the wires and it could be damaged. As with anything, you should check the security of all of the screws, and there are many of them.

Adding your receiver is the next step. The decision here is whether you’re going to use a satellite or full receiver. That might be determined by whether you want to remotely adjust the angle of the camera gimbal. That requires a PWM signal as opposed to the PPM signal from just using the satellite.

I tried mine both ways and ended up using a full receiver so I could change the camera if I wanted. There are connections provided for Spektrum satellites, Futaba S.Bus, and a standard receiver block. A connector block is also provided.

The manual lists all of the suggested settings for control throws, etc., for each major radio brand. If yours isn’t listed, it’s easy to interpret the data and apply it to your own situation.




The author’s flight battery is secured to the bottom of the quadcopter with Velcro and “one wrap.”




The connectors for the Spektrum satellite or Futaba S.Bus system are easily accessible and clearly labeled on the flight controller.


Layout

The flight controller is a nicely designed device that has everything clearly labeled and laid out in an orderly fashion. The instruction manual has an excellent picture of the board, labeling all the pertinent items (check for updates because the first manual had a couple of misprints).

At first glance, it appears that it’s an “all-in-one” board, but that’s not the case. I see that as a plus for the Vengeance 280. It does incorporate the on-screen display board, but the video transmitter (VTX) board is a separate assembly mounted above and to the rear of the quadcopter.

The ESCs are mounted inside of the carbon-fiber arms and connected to each corner of the flight controller with plugs. No soldering is necessary if you need to replace an ESC.

All dip switches and connectors are clearly labeled and accessible through cutouts in the frames. In other words, you don’t have to remove 50 screws to make simple changes! Whoever designed this had apparently experienced the frustration of having to completely disassemble a quad to make a change. Nicely done!

The VTX is a highlight of this machine. As it comes, it’s set to transmit a 25-milliwatt signal, but that can be changed to 200 milliwatts by cutting a jumper. The biggest feature for me was finding a set of dip switches to change the frequency and LEDs to indicate the settings. More often than not, these transmitters come with no obvious way to determine the exact frequency it’s transmitting. No guessing here!




The Flight Controller is laid out and clearly labeled in the manual.


CleanFlight

The Vengeance 280 is based on a NAZE Spec 32-bit Flight Controller 7DOF (with BMP sensor) and is ready for tweaking with the CleanFlight GUI interface. Don’t change any of the default settings before you test-fly your machine. It has been set to fly as designed and I found that to be adequate. There are some suggestions in the manual if you want to increase the speed or sensitivity after your initial flights. The only things you’ll need to initially adjust are the settings for your particular receiver.

If you decide to use a satellite instead of the full receiver, you’ll need to bind it using the command line and not bind it with an external receiver, then connect it to the Vengeance. Aside from that, everything is straightforward. Ensure that your channel mapping is correct and see that everything moves the appropriate lines in the receiver tab of the GUI.

Remember to use the “save” function at the bottom of each page before moving to another tab. If you don’t, your changes won’t be saved. Do all of your programming with the propellers removed from the Vengeance 280. Remember to return the dip switches to the Flight Mode setting before going to the field.




The Vengeance 280 is ready to go while the iMaxRC 150 charges the HV LiPo battery pack.





The screen of the iMaxRC 150 charger displays a lot of information while charging the Hyperion G6 HV LiPo batteries.



Flying

I always love the first flight on a new machine. I don’t know why. I guess it’s the anticipation and excitement of something new. This tiny machine flies much larger than it is. I have a habit of doing my test flights between my house and my neighbor’s, with permission, in an area also known as “the wind tunnel.”

It doesn’t matter how light the wind is, it seems to funnel through there and it makes for challenging conditions. That’s why I like it. My initial test hops there proved it to be stable and ready for a trip to the field.

From the moment I flew the Vengeance up into a hover, I felt it was going to be a great flier. The motors are tilted forward 8°, so be aware of that when it comes off of the ground. It wants to go forward. When you hover, you’ll use a significant amount of aft stick to keep it in place, but that means forward flight is that much easier.

Three flight modes are set as defaults. Angle mode is for beginners and features automatic level stabilization. The Angle + Baro mode is also for beginners and features automatic level stabilization. The integrated BMP sensor will automatically try to hold the flight altitude. Manual mode is for advanced use to perform rolls and flips. It disables automatic level stabilization.

You should have determined that each mode works on a three-position switch when you were setting up in CleanFlight mode. I didn’t see much difference between the first two modes, but in the manual setting, it’s sporty, so save it until you’re ready.

I made several flights simply flying around to get a feel for the machine. During that time, a couple of friends were taking FPV rides using their Fat Shark and Headplay goggles. I was having so much fun flying the Vengeance that I was hesitant to go “under the hood.”

This machine is small and fast, so it will get away from you in a hurry. At one point when I was flying for the video camera, I did a speed run, popped up at the end of the field to do a turnaround, and lost it in the sun.

A friend, who was riding along with me and wearing his Headplay goggles, was able to see where it was and how it was pointing so he guided me back to a point where I was able to see the aircraft again and recover. What a cool experience that was!

It also points to the excellent flight rogramming of the various modes. I flipped it into Mode 2 which helped me stabilize it in a high hover while my friend guided me back.

Flying the Vengeance with FPV is exciting! The video quality of the goggles was good, with minimal lining or drops. I have proven its crash survivability many times when I got a little too frisky or simply disoriented. So far, the only damage has been a broken propeller. My camera platform came loose during one crash, but the zip ties kept it from pulling the wires loose from the connector.


Conclusion

I couldn’t be happier with my Vengeance! There are many 250-class racers to choose from, and I did plenty of research before buying this one. I was glad I chose one with an integrated on-screen display and onboard VTX with a stabilized gimbal.

The day I test-flew mine, two people at the field placed orders for theirs. It’s hard to beat the quality of the build and flight performance at this price point. I think Hyperion has a real winner with the Vengeance 280!
—Greg Gimlick
maelectrics@gimlick.com


Bonus Video


Manufacturer/Distributor

Hyperion/Empire Hobby
(480) 982-0909
www.empirerc.com




Arvada Associated Modelers fabric runway

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Written by Tony Stillman
AMA club rolls up their sleeves and rolls out a new runway
Monthly AMA News Column
Photos by Jack Pitcher
As seen in the May 2016 issue of
Model Aviation.


Hi, again! By the time you read this, flying season will be ramping up with lots of events and activities across the country. I hope you have your new aircraft completed and are ready for some long, fun days at the flying field!

Several RC clubs across the country have been improving their flying sites by adding a geotextile (fabric) runway. This could be a new runway for foamies, or a full runway for all types of models.

AMA recently added a geotextile runway to the International Aeromodeling Center in Muncie, Indiana, at Site 8 (a park-flyer-type site at the south end of the property), and behind the National Model Aviation Museum.

The material was provided by US Fabrics, and is called Aeromodeling Geotextile 230. Find more information about this material on the company’s website at www.usfabricsinc.com/products/us-230-aeromodeling-geotextile. You can learn more and see how we use this material at AMA in a video below.



Here is a story about the Arvada Associated Modelers RC club in Colorado and its addition of a Control Line (CL) circle using geotextile. This is something that many RC clubs could add to allow the CL fliers a place to fly. Something worth thinking about …

Flying circle improvements were accomplished in the fall of 2015 at the CL site of the Arvada Associated Modelers RC club complex on the west side of Denver. This circle has been in use for a number of years and its surface consists of compacted “crusher fines,” a very fine rock chip material that is the leftover byproduct of rock-crushing operations. The Arvada club site is on the grounds of a sand and gravel company, so the material was readily available.

Through the efforts of Chris and Linda Brainard, who currently serve on the club’s board of directors, and Jerry Higgins, a proposal was developed to cover the existing flying surface with a doughnut of geotextile material. The geotextile material is used in other areas of the RC site, and enough was available to complete this project. Chris, Linda, and Jerry have been active in support of RC events and work parties, so it was hoped that reciprocal support would be available to help with this labor-intensive project.

A couple of work parties were scheduled. The first job was to add an additional layer of fresh crusher fines to smooth the surface. This was spread by a dump truck around the circle edges. This had to be shoveled and raked into place. It was a labor-intensive day for only four of us CL fliers. Some trips around the circle with pickup trucks, followed by several days of rain, compacted and smoothed the area.

At the next work party, we were relieved and gratified to have 20 club members show up to help get this work done. It was a nice day and things went smoothly. We were able to get the entire job done in slightly more than two hours. The spirit of cooperation among club members worked for us that day.

The inaugural Ringmaster Fly-A-Thon followed on October 9 and 10, 2016, as the Arvada Associated Modelers held the event on the newly upgraded CL circle. Chris and Linda hosted the event with the help of Jerry, Keith McMahan, and Jack Pitcher.




Jerry Higgins finishes raking out the new crusher fines in preparation for the geotextile fabric work party. This was a tiring day of shovel and rake work for the CL flyers.




A pit area and a worktable were added to finish the project.




Here’s a view of the Ringmaster pit area with the administration and food tents behind. We had a good crowd. Quite a few were RC fliers from within the club. Some had flown CL before and some had not. It was fun to watch. A few holes were punched in the ground.



The following is an excerpt from the report that Linda filed with our AMA District IX associate vice president and the Brotherhood of the Ring.



“It was a great time had by all! There were eight people who had not flown Control Line since the 1950s. The last time George Baxter flew was in 1956 on a parade field in South Korea.

“There was only one flier who got dizzy and had to get down on the ground before he fell down. All of the others walked off the field looking just a little tipsy!

“There were two guys who brought their electric Ringmasters and flew at the same time. Our oldest pilots started from age 84, through 79, 76, and 73, to our youngest pilots at ages 11, 9, 7, and 5! With 12 Ringmaster airplanes, we had 25 pilots, seven who soloed, and 20 flights put up by females for a grand total of 95 flights over the two-day event.”

—Tony Stillman
fsac@modelaircraft.org


Bonus Video




Helimax Voltage 500 3D

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Written by Chris Mulcahy
Take your quad experience to the extreme
Abridged product review
Photos by the author
Read the full product review in the May 2016 issue of
Model Aviation.


Specifications

Model type: Receiver-ready quadcopter
Size: 19.7 inches (500mm)
Width: 14.9 inches
Blade length: 8.9 inches
Weight: 32 ounces without battery
Motors: Four 1,400 Kv reversible brushless
Needed to complete: Five-channel radio/receiver; three- to four-cell LiPo battery and charger
Price: $429.99

Pluses

• Orientation-friendly canopy design.
• Built-in bailout feature.
• Multiple options for flight battery.
• Spare propeller set included in the box.
• Power—and plenty of it.

Minus

• Motor mounts might not handle crashes well.


Abridged Product Review

Quadcopters are becoming more popular by the day. Love them or hate them, they are here to stay! I’m sure by now that we are all familiar with camera-toting drones cruising lazily across the sky.

What you don’t see in a quadcopter every day is something that can actually challenge your flying skills. Whether you are new to multirotors, or maybe even a helicopter pilot, Helimax might have just the thing to take your flying to the next level.

The Voltage 500 is a 3-D quadcopter. Like the few that paved the way before it, the Voltage features reversible motors with symmetrical propellers so you can fly inverted. Unlike the others, the Voltage offers extreme flexibility for flight batteries, an efficient motor/propeller combination for extended flight times, and a unique canopy design that makes orientation a breeze. Did I also mention that as well as having a 3D Mode, its Stability Mode can be used for bailing out of maneuvers?


In the Box

The Voltage comes in a large box, hinting at the aircraft’s size. Inside of the box is the fully assembled Voltage 500, an instruction manual, a piece of Velcro (presumably for the flight battery or receiver), and a spare set of propellers. I did not expect there to be an entire set of spare propellers in the box, so I was pleasantly surprised.
I also received two 4S FlightPower LiPo batteries for this review—a 2,500 mAh pack and a 3,300 mAh pack. Your own receiver and a flight battery are needed for completion. I chose to use my Futaba 14SG, with an S.Bus-compatible receiver (more on that later).




Having the battery strapped beneath the quadcopter allows for a range of possible battery sizes.


The Voltage 500

As you might have guessed from its name, the Voltage 500 is a 500-class quadcopter. If you are wondering what 500 stands for, the multirotor measures 500mm from one motor to the other diagonally across. This 3-D quad is larger than others on the market.

The flight controller features a USB port (more on that later), and a receiver output that supports S.Bus, XBus, DSM2, DSMX, DSMJ, and PWM (with an optional S.Bus Encoder). A second plug is used to power your receiver from the flight controller’s built-in BEC. Each ESC has a plug that goes directly into the flight controller, and the motor wires run through the carbon-fiber boom and plug into each ESC. The ESCs have a series of status LEDs on the bottom, which are visible from underneath the airframe.

These propellers are big—measuring 8.9 inches from tip to tip. They appear to be unique to the Helimax Voltage because I couldn’t find a match to any other propeller. They come in pairs, an A and a B, both of which are clearly marked with a molded letter on the top of each. If you are unsure of which propeller goes where, the instruction manual has a handy diagram that illustrates the direction.


The Flight Controller

The flight controller supports many outputs. I had a spare Futaba R6202SBW, which is an S.Bus-compatible receiver, so I was able to run a single cable from the flight controller to my receiver.

For those using satellite receivers on DSM2, DSMX, or DSMJ, there are two satellite ports into which you can plug satellite receivers. There is also a reset button in the middle of the flight controller, just in case it gets confused and locks up (which mine hasn’t done to date).




The double-stacked frames allow plenty of room for receiver installation.




The heart of the Voltage 500 is the flight controller. This is where you attach a USB cable for tuning with a PC.


The App

What is the purpose of that USB port on the flight controller? If you go to the Helimax website, you can download the Voltage 3D app by clicking on the software download tab.The app lets you set your receiver type (a necessity if you are using anything other than S.Bus), and it allows you to verify control functions and directions. It will show you what flight mode you are in, permit you to adjust gain settings, and damper gain on the aileron/elevator and rudder gain.

There is a warning about the importance of removing the propellers before you try to adjust any settings. This should be a normal practice anytime you work on a quadcopter when the battery is plugged in.


Flying

The controls for the Voltage are much like those on a helicopter. If you divide your throttle stick into two sides, with mid-stick to high-stick being positive and mid-stick to low-stick being negative, you would essentially have a 3-D heli setup.

I started with good intentions. I planned to do the whole first flight in Stability Mode, and wait until the second flight before I tried any 3-D maneuvers. Well, that went right out of the window after roughly 20 seconds of hovering. The Voltage is a stable and forgiving machine in Stability Mode, and I believe a novice pilot would have no problem hovering it, but the Voltage was built for 3-D flying. I found myself flipping the switch into 3D Mode almost right away.

In 3D Mode, the Voltage becomes a power monster. By that I mean it has monster power! The first full-throttle punch-out that I did surprised the heck out of me because the Voltage shot sky-high at a ridiculous rate of speed. After I got it back down, I tried some flips with it and found it to be responsive, but not overly twitchy. Forward and backward flips, as well as sideways flips, were performed equally well and had a linear feeling in flight.

The transition time when reversing the motors was short, and it felt like an old-school collective-pitch helicopter that required the pilot to manage pitch during maneuvers. It didn’t take long to get used to the transition though, and I was able to hold flips without losing any altitude.

I wondered how well the bailout feature worked, so I took the Voltage up and popped it into an inverted hover. I flipped my switch into Stability Mode and sure enough, the Voltage flipped itself to a level position. Combining this flight mode with a momentary switch is a great way to practice new maneuvers.

The durability of the Voltage is good, but after a few tumbles and crashes, it became evident that the carbon-fiber tubes typically break and the motor mounts have a tendency to bend when they contact the ground. You can bend the motor mounts back with a little force and quickly be up and flying again.




The Helimax Voltage 500 3D is as at home inverted as it is right side up.


Conclusion

Quadcopters are great learning tools for prospective heli pilots, as well as fun-to-fly aircraft for everyone else. The control inputs are similar to a helicopter, and the skills you learn on the quadcopter will translate to a heli. You can practice hovering orientation, inverted flying skills, even pirouetting maneuvers—all of which can be applied to helicopters.

Even if you have no interest in helis, the Helimax Voltage 500 3D quadcopter is an awesome aircraft to fly in both Stability Mode and 3D Mode. It could be the next step in flying skills for current multirotor pilots. I don’t think you could give control of it to any RC pilot without seeing a smile on his or her face!
—Chris Mulcahy
cspaced@gmail.com


Bonus Video


Manufacturer/Distributor

Helimax
(800) 637-6050
www.helimaxrc.com


Sources

FlightPower
(888) 598-8037
www.flightpowerbatteries.com




An Interview with RC Pilot Brett Wickizer

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Written by Peter Vogel
Contributed column
As seen in the May 2016 issue of
Model Aviation.


In my last column, I shared an interview with Andrew Jesky. In a continuing effort to help bring you the stories and the passion of RC Aerobatics or “Pattern” pilots, this time I bring you Brett Wickizer, a four-time member of the World Champion F3A Team USA since 2009. Brett has three gold trophies and one silver F3A Team trophy attributing to his outstanding performances!

If you’re not into Pattern (yet), you might have heard of Brett from his time in International Miniature Aerobatic Club (IMAC) competition and 3-D flying, or from CK Aeropedia, the RC company he helps run with his longtime mentor and caller, Bryan Hebert. He’s also written several excellent articles about aircraft design, Pattern flying, and more, which you can find on CK Aeropedia.

I asked Brett how he got started, what he did before he got into flying RC Aerobatics, and how he fell into it. He answered most of my prepared questions with a great story that I think reflects what I’ve heard from many young Pattern pilots!



Flying started for me when I was young enough to have it as one of my first memories. This was not the way it started for virtually everyone I compete against—Andrew Jesky, Jason Shulman, Chip Hyde, and AC Glenn. They all had it in their families.

My first memories of flying are small, die-cast toys that were powered by imagination and flown by hand. That is all I remember until I was approximately 9 years old, when my dad decided it would be a fun father-son activity to build a trainer and learn how to fly as a family.

After a three-year break and a few months on the simulator, I was tearing up the skies. Flying was all I wanted to do and I had an insatiable desire to get better at it. That desire manifested itself in several ways when I was younger. I can look back at it now and appreciate it in a way that I couldn’t while it was happening.

After a little bit of sport flying, I was hungry to push the envelope, and 3-D was the most exciting challenge I could imagine. I remember what hooked me on 3-D. I can pinpoint the exact moment.

My dad and I were driving back from the field and right as we were pulling into our neighborhood, he told me about videos he had seen of people hovering their airplanes, and then they would bring the airplane down, touch the tail on the ground, and pull back up! “What?” I thought. “No way! That’s crazy.”

These days, a perfectly executed rolling circle is more thrilling—and indeed more challenging—but I don’t know if any future experience will match the unadulterated excitement I experienced then at the thought of executing a torque roll down low. I was in love.

The love, like in most young relationships, burned hot and burned fast. I couldn’t get enough! That is, until I got enough, and I realized my desire to get better wasn’t satisfied. I could do rolling Harriers 3 feet from the ground, touch the tail, torque roll to my heart’s desire, and cut the grass with my high-alpha knife-edge attitude down the length of the runway. So what? Other people could do that too. My drive for self-improvement was yearning for an outlet.

I knew that all of the best pilots were [RC Aerobatics] competitors, so that had to be my next step. Pattern was actually my second choice because of the Freestyle competition at IMAC events, but Pattern was more popular in my area, so I pursued it.

My first contest was in Baton Rouge, Louisiana, in May 2005. The contest director was none other than my future cohort and teammate, Bryan Hebert. By the end of that season, I was the Pattern Intermediate national champion.




Brett Wickizer (L) and his mentor, caller, and business partner at CKAero.net, Bryan Hebert.





Several competitors, including (back L-R in orange Futaba shirts) Chip Hyde, Brett Wickizer, Chad Northeast, Bryan Hebert, and (bottom L in the blue jacket) F3A legend Wolfgang Matt, during the 2010 F3A Pan American Championships in Medellin, Colombia.


The next year, I was Advanced national champion, and the year after that, I jumped straight into F3A. I am proud of a sixth-place finish in the finals. In 2008, I finished third at the Nats and qualified for a spot on the 2009 USA F3A World Championship Team.

Man, what a rush! Writing about it now brings back memories. That contest was difficult. I was in sixth place going into the finals and I had to jump none other than Sean McMurtry and Chip Hyde to earn a spot on the team. That year it was me, Andrew Jesky, Jason Shulman, Quique Somenzini, Chip Hyde, Sean McMurtry, Don Szczur, and Dave Lockhart in the finals. Wow!

Let’s put this into perspective. I was a woefully inexperienced teenager up against absolute giants in the hobby. All seven people on that list are F3A national champions! Two are F3A world champions, six (including me now) have been USA team members, and four are top-three finishers at the legendary Tournament of Champions.

No need to look any further for proof that the best-of-the-best compete in Pattern. You won’t find a list of names like that at other events.

My world has opened up in so many ways since I started competing. I have traveled to five continents, met friends from dozens of countries around the world, connected with people who have helped me in the real world and in my professional career as a full-scale pilot, and I’ve experienced things that have changed my perspective on life in profound ways. Competing in F3A is more than just a hobby for me. It’s a lifelong passion.



I asked Brett what advice he has for RC pilots today, particularly those who love flying, but don’t know if they want to get into competition or are more interested in disciplines other than RC Aerobatics. He responded with:



It’s my hope that some who read this will give a second thought to competing. Not everyone will have the same opportunities that I have had. It’s only a lucky few who get to travel the world to compete, but traveling is not what makes it so special.

Competition itself strips everything unnecessary out of your life. If you remain open to the lessons that the trials and tribulations of competition can teach you, there is no better teacher. There is no better way to get to know yourself, no better way to test yourself, and no better way to push yourself.

On top of that, every facet of competition in RC aviation has an incredible community behind it that is engaging, friendly, and helpful in so many ways. You owe it to yourself to give it a shot.


Additional photos

Model Aviation Magazine - Interview with Brett Wickizer


Sources

National Society of Radio Controlled
Aerobatics (NSRCA)
www.nsrca.us

CK Aeropedia
(225) 369-3542
www.ckaero.net




de Havilland DH-112 Venom

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Written by Mark Freeland
An easy-to-build all-sheet semiscale hand- or catapult-launch glider
Free plans and build photos
As seen in the May 2016 issue of
Model Aviation.


Download Free Plans

Click here for page one of the Venom plans
Click here for page two of the Venom plans (stabilizer only)


Supplies needed

• Two 1/16 x 4 x 10-inch balsa sheets
• One 1/16 x 3 x 10-inch balsa sheet
• One 1/16 x 1-1/2 x 6-inch balsa sheet
• A sharp hobby knife
• Sandpaper
• Two #8 washers
• Glue


Follow these steps to build your own Venom.

To make a catapult launch, you also need a 6-inch dowel handle with a loop of 3/32 x 18-inch rubber strip for the launcher.

Photocopy the plans and attach them to wood sheets with a glue stick, tape, or low-tack adhesive. Use medium 1/16-inch balsa sheet for an indoor glider. To make a stronger outdoor glider, substitute 3/32-inch balsa sheet, and widen the slots to match. I recommend using a slow-drying glue for assembly.

Cut out the parts with a sharp knife. Get help with this if you’re uncomfortable using sharp tools.

The angle of the slot in the tailbooms and rear top surface is important. Both tailbooms should be identical. Remove the paper patterns from the wood and sand all of the parts before assembly because this is easier than doing it afterward.

Glue the wing halves together with one wingtip raised 31/2 inches from the building board. Reinforce this joint with a glue fillet. Glue the fin to the end of the tailboom and leave a 1/16-inch gap for the stabilizer to slide into the fin.

When the glue is dry, slide the stabilizer into the slots on both tailbooms and glue it in place. The tailbooms should be parallel and perpendicular to the leading edge of the stabilizer. Leave the tailboom bottom edges on a flat surface while the glue dries.









Slide the two-piece wing into the slot in the fuselage’s main body. Align it so that it is centered and has equal dihedral (upswept angle) on both sides, then glue it in place. When it is dry, slip both tailbooms onto the rear of the wing, slide them into the slots on the wing, and glue them in place. Glue the side cheek doublers on each side of the fuselage.

Next, glue the wing root fillets between the rear of the wing and the fuselage. Make sure to align them with the wing’s surface. Add the optional wingtip tanks if desired.









For a catapult glider, cut out a hook as shown by the dashed line on the plans, or bend a wire hook as shown. Drill a 1/32-inch hole up into the fuselage, and epoxy the hook into the hole. Cut two 1 x 5/8-inch sandpaper grips, trim them to shape as shown on the plans, and glue them on each side of the fuselage under the wing root fairings.





Decorate the glider as you want. You can use markers, paint, etc. Look on the Internet for color schemes from which to choose. There are many! Cut out the cockpit and other decal patterns from the plans and glue them on (if you like).

Add weight to the nose (I used washers and clay) to balance the glider at the front tips of the tailbooms. Test glide and adjust the balance to achieve the best glide. Turns can be adjusted by adding a pea-size piece of clay under one wingtip. Trim the aircraft for a left-hand turn if you are launching with your right hand.

If you use a catapult, launch the de Havilland with a 45° bank angle at 45° to 60° from the horizon. With practice, you can achieve glide times of 20 seconds or more. Don’t forget to add your name and address to the model in case it gets away.

If you prefer not to cut out your own parts, a laser-cut kit is available from Retro RC LLC & Campbell’s Custom Kits.
—Mark Freeland
retrorc@live.com


Sources

Retro RC LLC & Campbell’s Custom Kits
(248) 212-9666
www.retrorc.us.com




2016 Weak Signals Toledo R/C Expo

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Digital event coverage of the 62nd annual Weak Signals Toledo R/C Show.
Videos and photos by Model Aviation staff.
Jay Smith showcases videos featuring new products and vendor offerings.




2016 marked an incredible 62 years of the Toledo R/C Model Show in Toledo, OH.
The self-proclaimed 'Greatest RC Show' didn't disappoint this year with vendors from across the country showing off their latest products, and guests from around the world looking for something to take home with them.

If you weren't able to attend this year's show, check out some of the more than 25 video interviews conducted by Model Aviation's Editor-in-Chief Jay Smith to find out what you missed. And don't worry, the dates have already been set for show number 63!

Check out this exclusive video playlist and enjoy all the sights of The Weak Signals Toledo R/C Expo!

Watch the whole playlist!

Click the 'playlist' button at the top-left corner of the video player to see all of the interviews we conducted at this year's Toledo show.





Fostering an Active Flying Club in the Modern Era

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Written by Dave Scott
A cause-and-effect approach to understanding thriving and declining club trends
Photos by the author, Jay Smith, and Jenni Alderman
As seen in the May 2016 issue of
Model Aviation.


Starting approximately 15 years ago, many model airplane clubs began seeing a decline in membership—fewer new people were joining and interested visitors to the flying field often did not return. This trend continues today. Whenever this subject is brought up, the usual justifications related to the economy and peoples’ changing interests are given as to why this is a sign of the times, as if nothing can be done about it.

I visit many clubs throughout the Midwest and elsewhere on behalf of my flight school, and despite the standard reasons people give to justify their club’s decline, I know of several clubs that are currently thriving, and more importantly, that have a large percentage of members who actively fly.

Whether large or small, near cities or in rural settings, the successful clubs that I visit all display similar, easily copied characteristics that the struggling clubs I visit do not. I want to highlight the tendencies that are on display at clubs that do well at acquiring and retaining members, and conversely, why others are in a state of decline. By doing so, I hope to present several easily adopted solutions to help stem the decline and promote club growth.

Those who feel that the membership has no role in their club’s decline will probably take offense to some club behaviors that I will shine a light on, whereas I’m certain that those who are members of thriving clubs will think this article merely states the obvious.

Before deciding that what works for other clubs won’t matter because your club members are older and you can’t get new members, for the sake of discussion, let’s say that your club sponsors a model display at a mall or a hardware store. As a result, five enthusiastic new people show up at your flying field the following weekend, expressing interest in joining the club and flying.

Is your club prepared to accommodate them and retain them as members? Or is your club stuck in a pattern of telling newcomers that they’ll first have to learn how to set up an airplane then, depending of the availability of the instructor(s), they will have to expect some crashes and make a number of trips to the flying field before they’ll be able to fly on their own?

To veteran club members, that sounds perfectly normal; however, as many clubs are finding out, this no longer works in our instant-gratification society, where so many other activities vie for peoples’ discretionary time and promise to deliver immediate fun.





1. The first significant trait on display at successful clubs in the modern era is that their leadership constantly promotes flying! For example, when a potential new member visits the flying field, the club leaders do everything they can to get that person in the air as soon as possible, or at least ask him or her to accompany them while they fly.

An interest in airplanes and flying is primarily what draws people to the hobby, and it is what RC aviation offers that they can’t get anywhere else—especially since the training requirements and cost of full-scale aviation have become prohibitive for many people.

A typical busy person today enters aeromodeling to have fun, as well as to enjoy the freedom that flying represents as an escape from stress and real life. The reasons for joining a club are mainly to have access to a well-kept, dedicated flying site and access to the help of experienced modelers.

The camaraderie and everything else that goes with being a club member is secondary to flying in the beginning. To the consternation of many veteran modelers, a typical RC pilot today looks at the process of setting up an airplane as mainly a means to fly, and would prefer not to spend much time working on his or her airplanes.

Recognizing this, effective club leaders focus on “accentuating the positives” whenever they encounter a potential member or interested spectator. These positives include a dedicated runway from which to fly, experienced members to help answer questions, and the fact that technology is making it easier and cheaper than ever before for people to enjoy the hobby.

Good club leaders are like good car salesmen who smartly pitch a car’s best features in order to elevate a person’s enthusiasm before getting into the details of price, fees, etc. Failing clubs, on the other hand, tend to jump right into bringing up dues, prohibitive rules, duties, costs, etc., whenever an interested visitor/potential member shows up at the field. They then wonder why the person never returns.






2. If the reason for the club’s existence—a dedicated environment in which to fly model airplanes—is no longer the main focal point, the primary reason to join or remain part of the club no longer exists. In these cases, the non-flying members of the club will invariably steer the club’s focus and resources to activities unrelated to flying—such as club politics—causing people who were originally drawn to the hobby for the fun of flying to have little reason to come back. There will always be conflicting interests and politics in any organization, but they are less noticeable when there’s plenty of flying taking place.

For a variety of reasons, such as seldom having a plan before flying and deemphasizing fundamentals in favor of the latest technology and design, the flying skills of an average club flier typically plateau within three to five years. As a result, those who don’t become discouraged or lose interest, often turn to constantly tinkering and acquiring new equipment to get their kicks.

That would be fine, but when constant tinkering is presented to an average newcomer as standard operating procedure, what he or she mainly sees is an endless series of obstacles that get in the way of flying and fun.

As these perceived obstacles chip away at a newcomer’s enthusiasm, or as the result of a negative experience (such as a club member disassembling his or her airplane rather than helping get it in the air), reasonable people will start thinking about other activities that don’t involve as many hurdles.

The conundrum that many clubs face today is that although some of the veteran members act as though it would take the fun out of the hobby if everything worked and nothing needed to be changed, that would be an answer to prayers for newcomers and those trying to improve their flying skills.

Of course, if a newcomer is inclined toward tinkering, there is no better outlet than RC aviation. However, all too often veteran fliers forget how intimidating it is to be a newcomer and how much more there is to learn than anyone expects. The temptation to impress your novice audience by sharing the setup expertise you developed throughout many years can prove daunting to someone who entered the sport hoping to start flying right away.

Effective club leaders, motivated by wanting each member to have a positive experience and thereby raise the likelihood of him or her remaining active in the club, make every reasonable effort to keep things simple and remove obstacles that would get in the way of others enjoying flying at the club field.

Anytime a member brings a new airplane to the flying field, the club members should refrain from pointing out all of the things that they don’t like or would do differently. Instead they should perform the essential checks to ensure that an airplane is airworthy (such as checking the center of gravity, correct travel, batteries), and then do their best to get it into the air as soon as possible.

Don’t misunderstand me. If you’re familiar with 1st U.S. R/C Flight School or my training and setup manuals and articles, you know that I’m a big proponent of doing everything possible to improve performance, and therefore the speed of learning. Even so, the reality is that many of the improvements that I make to airplanes used in my school would barely be detectable by an average club flier.

My point is, whether it’s a recreational club environment or commercial RC flight school, the main thing is to get the basics correct and know that refinements only help to fine-tune airplanes that are fundamentally sound to start with.
Effective leaders know that it is wise to not bring up all of the minute ways to “make things better” until a person first has a good handle on the fundamentals. What good is a slightly more-capable radio or gadget going to be if the club member hasn’t yet mastered the basic setup and operation of the equipment that he or she already has?





3. Another factor contributing to declining club membership is the tendency for people to whom everyone looks for advice to recommend the latest, greatest equipment and setups that match their own interests and ways of doing things.
They should recommend what best aligns with the skills and interests of members asking for advice. It won’t matter how valid your advice is if it’s beyond the abilities of most of the members and causes them to become discouraged or give up on flying before realizing any benefit from your advice. Effective leaders try to make practical recommendations that will offer the greatest likelihood of success.

Consider the E-flite Apprentice basic trainer. Veteran modelers typically advise any newcomer buying an Apprentice to forgo the basic radio offered with the airplane, and instead buy one with more features. However, the radio offered with the Apprentice is preset by the factory, so all that a novice has to do is charge the batteries and fly. Those who “upgrade” to a more-capable radio have to overcome the challenge of learning confusing terminology and how to program the new radio rather than experiencing the immediate gratification of flying.

Learning to program radios has become one of the greatest challenges in the hobby, and it is often counterproductive to thrust that daunting task on any newcomer whose motivation for getting into aeromodeling was to have fun, but already has so much else to learn. Of course, at some point a fledgling pilot will have to learn to set up a model and radio, and might possibly even enjoy it, but setting the precedent of facing a complicated process of programming before flying is intimidating, and often erodes someone’s enthusiasm before even getting to fly.

Despite many clubs struggling to get and keep new members, many older members continue to frown upon airplanes such as the Apprentice that utilize modern, three-axis stabilization technology aimed at making learning to fly easier and less likely to involve significant repairs.

Because some of these airplanes require unconventional control techniques compared with the way a newcomer will eventually fly, veteran modelers will often frame stabilization technology as a crutch and subsequently convince the student to turn it off. What good does it do to point out that those who learn to fly with the stabilization turned on will have to learn different control techniques in the future if, before they get to that point, they become discouraged and quit?

Active clubs with a high retention rate never discourage, but rather encourage, the use of anything that helps new members get to the point of being able to safely fly on their own whenever they wish. Those systems aimed at speeding up success in the air can usually be diminished or turned off as a pilot’s confidence increases.

Because SAFE technology often enables new pilots to solo on the first day, it solves one of the biggest challenges that clubs have faced in the past 40-plus years: finding committed instructors who are available to train regularly.






4. One of the biggest contributors to clubs struggling to retain active fliers is the tendency of the leadership at the field to continually push members to purchase more advanced equipment and increasingly larger airplanes under the guise that doing so will help them fly better.

Although that might be partially true, it has contributed to the phenomena of people leaving their clubs after four or five seasons when the hobby is no longer enjoyable. These former members no longer attend the club, but they continue to fly park flyers close to home and strictly for fun.

Although the club’s more experienced members might be pitching radios with more features and claim that “bigger flies better” or espouse “what the pros use,” seldom mentioned is the additional complexity associated with those components. You can visit clubs across the country and see large numbers of people preoccupied with learning how to program their radios and operate their equipment instead of actually using it to fly!

You’ll also notice that within weeks of any member giving in and getting a substantially “bigger and better” airplane, his or her attendance tends to drop off. If you question the person about it, he or she will have a list of excuses about how it’s been too windy, he or she has been too busy, and/or it’s become more convenient to fly helis and park flyers closer to home.

The only thing that’s different from when the person used to come regularly to the club field is that his or her equipment became appreciably more expensive and complicated to operate, so the excitement about going to the flying field has been replaced with the fear of jeopardizing a substantial investment.

We can reassure a person that the fear and anxiety does subside and that he or she will eventually enjoy an elevated sense of satisfaction. Yet for the majority of fliers who got into the sport as a fun hobby, it is rare to see someone remain active in a club when flying is no longer fun.

Another important characteristic of a successful club is that the leadership never makes members feel as though they are operating inferior equipment or tries to push them to purchase equipment that is out of their comfort zone. If the members are successful with what they have, the “grass is greener” effect will eventually kick in and they’ll choose on their own to take things to the next level—or not. If it ain’t broke, don’t fix it!

The reality is that although technology can be wonderful, it has also made people’s day-to-day lives busier. Clubs that are thriving today recognize that many people simply don’t have the time to methodically learn all of the technical aspects of the hobby the way that veteran modelers have always sought to do. Heck, many people today don’t even have a dedicated place to work on their airplanes!

Rather than trying to return to the old ways, successful clubs today are open to all types of flying. They support the fact that the only/best option for many people is to fly mainly ready-to-fly setups that are easy to store and transport.

I know of several clubs that attribute a large part of their decline to ready-to-fly park flyers and helicopters, which make it easier for people to fly close to home. The existence of low-cost, easy-to-fly aircraft has made it much easier for people to get into the hobby, and more people fly RC models today than ever before. That means that the pool of potential members for clubs to draw from has never been larger.

When people reach the limits of what they can do with their simple park flyers, most will start looking at larger, more capable airplanes that can handle more wind, and therefore need to find larger flying fields. It’s the same as people saying to me that because it’s becoming easier for people to teach themselves, there will no longer be a need for an RC flight school. In reality, interest in the school has tripled in recent years, thanks in part to more people entering the hobby.

Rather than eliminating the need for clubs, park flyers often help stem the membership decline and make it easier for more fliers to get stick time. Although it might appear to veteran members that park flyers are contributing to declining club participation, it is more likely that those clubs simply don’t offer much more than what fliers have access to closer to home.





5. Although I’m a 3-D pilot, it is easy to see that another contributor to club members losing interest in flying is the tendency of 3-D pilots to encourage those around them, no matter what their abilities, to purchase 3-D airplanes and equipment. Additionally, much of what people read and see online is also aimed at enticing pilots to pursue 3-D.

The unspoken reality is that learning to fly 3-D requires such fast reflexes and endless hours of practice that many fliers will never achieve 3-D flying skills. Plus, no one mentions that the tradeoff for setting up a model for 3-D is that it generally becomes more difficult to fly.

Consequently, with so many pilots basing their equipment and setup choices on flying 3-D at some point, many end up struggling or hitting a plateau, especially when the complicated process of learning to program and trim for 3-D turns out to be much easier said than done.

When these realities mount, those who don’t become discouraged and quit often fly less and less, preferring instead to spend their time making changes to their equipment and getting involved in nonflying club activities.

The following summarizes some of the most productive tendencies on display at many of the country’s vibrant clubs. Just remember, assuming that there is a willingness to take steps to increase flying activity at your club, not to let the perfect be the enemy of the good! That is, you can’t do everything that has proven to work for other clubs, but giving a few of these strategies a try is certainly better than doing nothing at all.

• Successful clubs promote a policy of never allowing spectators to sit off to the side by themselves, but rather encourage their members to introduce themselves. If the spectators express an interest, invite them to check out the airplanes and to sit with the members.

It’s counterproductive to send a new visitor/potential member home with instructions to search for the information that they’ll need to get started in the hobby. Novices don’t even know what questions to ask, so have all of the printed forms needed to join AMA and the club (even if they’ll be joining online), and, if possible, a printout of an RTF basic trainer, ready to hand to any interested spectator before he or she leaves.

• When talking with a potential member, club members refrain from airing dirty laundry and tales of failure. Instead, they should accentuate the positives of how technology is making it easier to fly than ever before, and that by joining the club, he or she will have access to a dedicated flying site and experienced pilots who can offer advice when needed.

• As long as a person’s equipment is airworthy, leaders of clubs with high retention rates generally hold off pointing out everything they would change or improve upon, but do their best to help that person experience the thrill of seeing his or her airplane in the air as soon as possible.

• Unless it’s appropriate, leaders of active clubs avoid framing members’ equipment as inferior and trying to persuade them to purchase increasingly more complex/expensive equipment under the guise that it will make them better fliers. Instead, club leaders emphasize that the main things are to have fun within their individual comfort zones. Although good equipment is important, correct practice is much more important. (Remember, what someone might refer to as an inferior radio today would have been state of the art only a decade ago, and entirely capable of fulfilling the needs of 95% of fliers!)

• Rather than promoting 3-D flying and complex 3-D equipment setups as the end-all after learning to fly, leaders of successful clubs try to offer practical recommendations based on what they feel gives each member the greatest likelihood of success, based on his or her immediate skills and interests. Effective leaders correct the impression that the route to becoming a better pilot is to try to mold yourself after the club’s best 3-D flier, but instead hype the fact that the awesome (unique) thing about the hobby is that there are so many options available, and that pilots can change their interests at any time.





My efforts to highlight these tendencies and help stem the 15-year trend of declining club membership might prove to be wishful thinking. However, I make my living in the hobby, and I fly large aerobatic airplanes that require well-maintained runways. Therefore I have more than a casual interest in clubs doing well. That noted, I want to bring up a couple of final observations.

Although I’m sure there are exceptions, I know that if a club does not appoint leaders who actively fly and have a personal stake in maintaining a pilot-friendly club, club politics almost always take over until eventually so many people have been turned off that there are barely enough members to sustain the club.

For a club to experience growth, it must have individuals in positions of leadership who possess the initiative and/or natural inclination (often as a result of career backgrounds) to map out a club’s mission statement, along with a step-by-step plan of action aimed at cultivating an active, fun, flying club.

When people in the area hear about the club and decide to check it out, they will encounter an appealing club that looks as though it would be fun to be involved with. The reason that it takes this type of leader is because the turnaround or growth doesn’t often happen right away.

Throughout the process, some members will likely try to sabotage the leadership’s efforts because, from the sidelines, they think they know better. That’s when having a plan in place helps keep things moving toward the club’s stated objectives, rather than allowing the diversions common to any group undertaking to sap everyone’s enthusiasm.

There are many other things that successful clubs are doing, including building attractive websites, community involvement, etc., but it all starts with getting the basics right to foster an environment that promotes flying and encourages people to have fun and pursue their own particular interests.

Have a great 2016 flying season!
—Dave Scott
1usrcfs@gmail.com


About the Author

Dave Scott is a champion full-scale aerobatics competitor and an air show pilot, as well as the founder of and chief flight instructor at 1st U.S. R/C Flight School. His groundbreaking books and articles feature the accelerated training techniques and methodologies he developed while professionally instructing more than 1,700 RC pilots of all skill levels. More information about his books and school can be found at www.rcflightschool.com.






Sources

E-flite
(800) 338-4639
www.e-flite.com




Warbird Pylon Racing

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Written by Don Stegall
Get into the excitement of racing at this year’s Nats
Photos by the author
As seen in the May 2016 issue of
Model Aviation.


The upcoming 2016 AMA RC Pylon Racing Nats, to be held July 15-22 in Muncie, Indiana, will include a warbird racing event. I’m going to share details that might benefit people and clubs that want to get involved in warbird racing.

Radio Control Pylon Racing Organization (RCPRO) Warbird Racing and some of the warbird racing groups in California are based on similar concepts. Similar to AMA Pylon Racing events, there are tiers of performance, but the airframe and engine rules for these classes are more open than AMA Pylon Racing.

California-style racing uses a wing-area-to-engine-displacement chart. RCPRO racing no longer has a wing-area chart. In RCPRO racing, the only wing specification is that the wing area must be 400 square inches or more. The wing-area chart was dropped because wing area to displacement can favor some engine and airframe combinations.

With the advent of electric power using brushless motors and LiPo batteries, it becomes difficult to specify the power system. But these wing-area charts set some limits concerning speeds that can be achieved. There are pluses and minuses to each, and this can be a real “conversation starter.” At the 2016 Warbird Racing Nats, a wing-area chart is specified and electrics will not be competing.

The question is, “How do you have tiers of performance when so many powerplant and airframe possibilities exist?” The answer is brackets. Bracket racing is not a new concept. It has been done in automobile drag racing and in closed-circuit car racing. In Pylon Racing, a standard course has been defined and brackets have been established for that course size.

The current and most popular course is a two-pole, 700-foot course. Three classes of aircraft performance have been established. Bronze is the slowest of the classes with a breakout time of 2 minutes and 30 seconds. Silver class has a time of 2 minutes, and the breakout time for the Gold class is 1 minute and 30 seconds.

A breakout time is the minimum time you can post in a heat and not be penalized for going too fast. This is somewhat foreign to people who are accustomed to many types of racing, where the first person to finish the race or heat wins.

The purpose is to limit how fast the airplanes can go in their tiers. To get a 1-minute-and-30-second time in the Gold class, you don’t need a model capable of 200 mph; a 150- to 175-mph airplane can win a Gold heat race.




The RCPRO Warbird Course will be used for the Warbird Pylon Racing event at the 2016 Nats. It is designed for safety and is used for waivers for sanctioned warbird events in RCPRO and RCPRO-derived class races. The breakout times are established for this course.




Pilots and callers are getting their strategy together for a heat race. In bracket racing, there is an element of strategy to race as fast as possible without beating the breakout time.




The pilots fly from off the course facing the pylons. This is a heat in a Silver-class race.


As in nearly all forms of racing, preparation and consistency are key to winning. Many of the airplanes flown in warbird racing use retractable landing gear. Having landing gear fail or perform poorly on takeoff will get you no points if you don’t get the airplane off the ground. Having a gear failure on landing can damage your aircraft to the extent that you might not be ready for the next heat.

Retractable landing gear makes an aircraft significantly more complex. In fact, in full-scale general aviation, an airplane with retracts and a variable-pitch propeller is described as “complex.”

Because the type of racing I am discussing has no limits on engine or fuel system modification, the key is having both be reliable.

Some of the models use YS or other brands of engines with pressurized fuel systems. Proper preparation of a pressurized fuel system adds to the performance and complexity involved in running those engines. Contestants provide their own fuel. Some run 50%, 60%, or 70% nitro. With the high nitro content, engines can and do fail.




This is the YS115FZ-WS Warbird Special engine. It is an evolved version of the YS110 and fits in the same mounting pattern.


Propellers are not limited. Matching a propeller with an engine and an airframe is an art. The Gold-class aircraft tend to be the most complex and highly tuned. With the breakout times, the fastest, most-tuned model might not win. All of the pieces have to come together.

The good news is that you can take nearly any semiscale warbird ARF and be competitive in the Bronze class. One of the most popular models for warbird racing is the P-51 Mustang 46, offered by The World Models. This airplane has a wooden wing, fuselage, and tail, with a fiberglass cowl. The World Models also offers the Voodoo Mustang 46 and the Dago Red Mustang, both with similar planforms. With good assembly skills, aircraft from other manufacturers can also be set up for the Bronze class.

The speed of a competitive Bronze-class model should be in the 100 mph to 120 mph range; however, an 80 mph model can compete in Bronze and even win.




This is a Bronze-class heat looking toward Pylon One on the right side of the course. The bucket on the top of the pylon helps the pilots see the pylon.



This photo captures a Silver-class heat as the models round Pylon One.



Choosing an airframe and engine combination for the class in which you want to compete is key. An unreliable airframe and engine combination won’t win. You can search for advice on the RCUniverse forum or the RC Warbird Racing page on Facebook. People are generally glad to share their choices and preferences.

When it comes to the higher classes, some construct purpose-built models, while many modify and reinforce ARF aircraft. It can require significant effort to make an ARF hold up to the speeds required to compete in the Gold class, but some manufacturers produce models that do hold up to Gold-class speeds.

One of the newer models in the marketplace is the Spitfire 40 by The World Models. Although it has 40 in the name, this model was built to be able to handle the YS115FZ-WS (Warbird Special) by YS Engines. YS engines are popular. The YS FZ63S works well in the Bronze class; the YS91 does well in Silver; and the YS110 and YS115 engines are popular choices in the Gold class. All of these engines are crankcase supercharged and have pressurized fuel systems that perform well on the straightaways and in the turns.

The Spitfire 40 has electric retracts, a strong wing, and solid balsa tail surfaces. The solid surfaces make it too tail-heavy for a .46 two-stroke engine without significant weight added up front. The YS115FZ-WS weighs approximately 26 ounces and the airplane will be slightly nose-heavy if assembled according to the manual. Shifting the throttle servo rearward and putting the receiver behind the servos can balance it.




The World Models Spitfire 40 was built for Warbird Pylon Racing. It features a strong firewall with enough space for the YS115FZ-WS engine. Many other engine brands will easily fit.


The Saito FA-125A AAC with a muffler weighs 22 ounces. If you want to go with a two-stroke engine, the relatively new O.S. 95AX Ringed engine with muffler weighs 20 ounces. The older O.S. 91FX Ringed engine with muffler is in the 20- to 24-ounce range, depending on the muffler.

There are no muffler limitations other than two-stroke engines need to have a muffler or a tuned pipe. Jett Aerotech has a variety of engines that can be used and offers mufflers for other engines if you need a performance boost.

Richard Verano of YS Engines and Pylon Racing fame had significant input on the Spitfire 40. I spoke with him about tips and modifications for Gold-class racing and I purchased a YS115FZ-WS to go in mine.

I plan to make videos about the Spitfire and the YS engine, as well as other warbird racing aircraft, and share some tips from Richard. Check out my videos at the link listed in the “Sources” section.

If you are racing under RCPRO Warbird Racing rules and are not limited to .95 displacements for a two-stroke engine, there is one gas engine that might be fun to try in the Spitfire 40. The Evolution 20GX 20cc (1.20 cu. in.) gas engine with a pumped carburetor might work in the Spitfire 40 if the ignition is relocated, and possibly with the use of a header and tuned pipe instead of the Pitts muffler. With the price of gasoline being low, fuel would be inexpensive—much less than 30% to 50% nitro per gallon.

Fans of electric-powered aircraft should note that they are being raced in RCPRO Warbird Racing events and winning. Tony Pacini was a pioneer in electric power and he has been at the top of the leaderboard multiple times.

With the addition of Club 40 and Warbird racing at the 2016 AMA Pylon Racing Nats, there is something for almost anyone interested in RC Pylon Racing in Muncie this summer.
—Don Stegall
don.f.stegall@gmail.com


Sources:

Nats
www.modelaircraft.org/events/nats.aspx

Nats Warbird Championship Race Rules
www.nmpra.net/Documents/2016nats
warbirdracerulesapproved160107.pdf

RCPRO Warbird Racing
www.rcprowarbirdracing.com

The World Models/Airborne Models
sales@airborne-models.com
www.airborne-models.com

YS Engines
www.ysengines.net

Jett Aerotech
(713) 680-8113
www.dubjett.com

Horizon Hobby
(800) 338-4639
www.horizonhobby.com

Author’s videos
www.youtube.com/user/donstegall/videos

National Miniature Pylon Racing Association (NMPRA)
www.nmpra.net



UAS4STEM Takes Flight

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Written by Rachelle Haughn
New UAS contest for youth kicks off
Digital exclusive feature
Photos by Tara Stafford and Matt Ruddick
As seen in the June 2016 issue of
Model Aviation Digital.


UAS4STEM Regional Recap



A small group of hikers has gone missing in a remote area. Rescuers have determined the search area, but are unsure of the hikers’ exact locations or conditions.

Because of the terrain, looking for them on foot would be treacherous and take several hours. Searching via an all-terrain vehicle is possible, but there is only one available.

Darkness is coming fast, and the temperature is expected to dip into the low 30s tonight.

At this point, the person heading the rescue operation must come up with a quick plan of action. It would be helpful to be able to view the area from the sky, but the closest Cessna cannot arrive until two hours from now.

There must be a better and more efficient way to look for the missing people before darkness arrives …

A scenario similar to this is what students ages 11 to 19 were given shortly before they powered up the transmitters for their Quadzilla multirotors on a Saturday morning in April. The groups of four to eight youths were competing in AMA’s inaugural regional UAS4STEM competition. They were tasked with using the quadcopters and FPV equipment to find clues that would lead them to the missing hikers (which was actually a dummy).

The contest was held April 23-24 in Hollywood, Maryland, and hosted by the Patuxent Aeromodelers club. In the months leading up to the contest, the 17 teams were tasked with completing an online curriculum that included safety and flight training, building information, and aircraft programming; and building Quadzilla quadcopters.




Teams participating in the contest were required to build Mid-Atlantic Multirotor Quadzilla quadcopters from a frame kit.


Before preparing for the contest, the students at the first of six UAS4STEM regional competitions had never flown, built, or been exposed to any RC aircraft, including multirotors, said Bill Pritchett, AMA Education director.

“This is brand new to them and some had never used tools before,” Bill stated. “I think it’s a huge opportunity for us to tie this new technology into education for the kids.”

The teams were evaluated by some Patuxent Aeromodelers club members who served as judges. The competitors received points for an oral briefing that they had to present before their flights, meeting the requirements of the flight mission, completing autonomous flight tasks, and finding the mystery items. The autonomous flight tasks included takeoff, landing, accurately displaying the “no-fly-zone” boundaries, and waypoint navigation. The team with the most points won.




As part of the competition, the teams had to explain to a panel of judges how they planned to complete the mission.


After conducting their preflight inspections, the pilots had to fly above the assigned search area and find items that could help them locate the missing hikers, such as a cooler, a lawn chair, and a tent. Most of the teams used some sort of search pattern to find these objects. The locations of the items were called waypoints. When these things were found, the team members used GPS and computer software to mark the waypoints. The aircraft had to hover at each waypoint for a minimum of 5 seconds.

Jessy Symmes, AMA Education assistant, said she asked some of the teams what they based their search patterns on. She said one of the Civil Air Patrol (CAP) teams used a pattern similar to one used by the Navy, another implemented one commonly utilized by aerial firefighters, and a third used trigonometry. “They would fly over [the area] until they found the first item, then they used trigonometry to find the next. They found all of the items,” Jessy added. Other teams didn’t have a search pattern to follow. “Some just did hunt-and-peck,” she said.




One of the terrain problems that a search-and-rescue team on foot would have encountered is this tall brush. In the case of an aerial search operation, however, it cushioned the landing of this Quadzilla that was recovered by one of the UAS4STEM teams.


The Maryland regional contest was held from 8 a.m. to 3 p.m. each day. Most of the competitors lived two hours or fewer away. Some of the teams’ entry fees were funded by the Naval Air Station Patuxent River, which is located near the Patuxent Aeromodelers club’s flying site where the contest was held. Bill said these teams were from high schools near the naval base, and 1/3 of the participants were females.

Jessy said that the teams participating in the upcoming regional contests included some made up of five kids who live in the same neighborhood, a group of boys trying to earn their Eagle Scout badges, a group of homeschooled brothers and sisters, and some students who met in a class and decided to form a team.

The other five regionals were scheduled to be held April 30 to May 1 in White Lake, Michigan; May 7-8 in San Diego; May 21-22 in Ball Ground, Georgia; June 3-4 in Fargo, North Dakota; and July 23 in Wenatchee, Washington.

A total of 75 teams registered to compete in the regionals. Jessy said that AMA had hoped to have 15 to 20 teams participate in the first year of the contest. “Never in our wildest dreams [did we think] we would have 75 teams,” she said. Jessy added that the number of teams had to be capped at 75 because AMA employees ran out of time to get the quadcopter kits delivered to the teams fast enough to allow enough time for the students to build the aircraft.

This is the first year for UAS4STEM, but a similar contest, called STEM4UAS, was held in 2015. It was developed and operated by the Navy, with assistance from AMA member Archie Stafford, Bill explained. “It kind of fell apart. There were equipment failures and the kids were frustrated because there was not enough flying time,” he said. The teams used BNF multirotors for the 2015 regional event, which was also held in Maryland.

“We took charge and got a website and started developing the AMA version of that,” commented Bill.

This year, Archie is a contracted AMA employee and holds the dual titles of national director UAS4STEM and AMA Education sUAS specialist. The Naval Air Systems Command pilot and his fellow Patuxent Aeromodelers club members were able to help the contestants when needed. In addition to being judges, some of the Maryland club’s members served as safety inspectors. They also put on a noontime flight demonstration of model helicopters and airplanes. Bill said roughly 25 of the club members live at the naval base.




The host club for the first UAS4STEM regional contest, the Patuxent Aeromodelers, put on a flight demonstration to expose the participants to a variety of model aircraft including helicopters and airplanes. Archie Stafford, who is the national director UAS4STEM, AMA Education sUAS specialist, and a member of the Patuxent Aeromodelers club, is shown here, getting his aircraft ready to fly.


The Maryland club isn’t the only one that has stepped up to the plate for UAS4STEM. Jessy and Bill had plenty of praise for all of the clubs that were planning to host regionals.

“This wouldn’t be possible without the AMA clubs that have stepped up and gone above and beyond” what was asked of them, Jessy said. “It’s a lot to ask for. They’re putting this whole show on themselves.”

Other clubs that volunteered to host the regional contests have invited local media to the events, have asked colleges to come and speak to the students about their aeronautical programs, plan to cook meals for the youth, and have made grab bags for them to take home, Jessy stated.

When asked how he felt about how the first regional UAS4STEM contest went, Bill said, “Oh, two thumbs up!”

Jessy felt the same. “It went way better than expected.”

Bill added that the students seemed to enjoy the contest. “When we were giving out the certificates, I asked them if they learned anything. [They answered] yes. [I asked] did you have fun? ‘Yes.’ Will you come back next year? ‘Absolutely!’”

The top two teams in each regional will be invited to compete in the national contest. The teams from the Maryland regional that have been invited to the national contest are TORCH and St. Marys Composite Squadron (CAP) MD089. The national competition will be held August 21 at the International Aeromodeling Center, located at AMA Headquarters in Muncie, Indiana. In addition to these 12 teams, of the six teams that took third place in the regionals, the one with the fastest time will also be invited to participate in the national contest.




The TORCH team was one of the top finishers in the regional UAS4STEM contest that was held in Maryland.




This Civil Air Patrol team, MD-089, finished in the top two in the regional UAS4STEM contest. The team has been invited to participate in the national competition in August. Pictured in the back row is Jessy Symmes, AMA Education assistant.


At the national UAS4STEM contest, the winning team will receive scholarship money. Also, one of the competitors will be selected as the first-ever recipient of the Dewey O. Broberg Jr. Memorial Scholarship. The recipient will be chosen by the contest judges based on his or her demonstration of teamwork.

Although the team registration period has ended for the 2016 contest, teams can register for the 2017 contest beginning June 1 at www.uas4stem.org.
—Rachelle Haughn
rachelleh@modelaircraft.org




E-Fest 2016

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Written by Jennifer Alderman
Ten years of midwinter indoor fun-flying
Event coverage
Photos by the author
As seen in the June 2016 issue of
Model Aviation.


Sponsors

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E-Fest pilots are innovative and creative when it comes to transporting and displaying the many models they bring to the event.

Each year when I visit E-Fest, hosted by Hobbico, two words come to mind: controlled chaos. The event celebrated its 10-year milestone on February 6-7, 2016, and that chaos must be something hobbyists look forward to in the middle of long Midwest winters, because 286 registered pilots and more than 3,600 spectators came through the doors of the University of Illinois Track and Field Armory in Champaign, Illinois, to see what the chaos was all about.

At any time during the two-day, electric-only event, there are more than a dozen indoor aircraft in the air—foamies, flying wings, scratch-built micro park flyers, micro helicopters, and drones. It’s hard to keep track of who is flying what! Everyone is having fun. You only need to stand along the flightline to see smiles on the faces of the pilots and hear laughter in the air.

It is hard to describe E-Fest beyond controlled chaos—you have to experience the atmosphere yourself before you can really understand. E-Fest is typically the first big event of the year and the flying season. It’s still cold and harsh outside, so it’s a respite from the midwinter blues when everyone is wishing for warmer weather so they can fly outdoors.

To see the tables lined with transmitters and chargers, PVC-pipe aircraft holders, cardboard boxes stacked full of Combat foamie wings, and even retail boxes lined with the original Styrofoam and doubling as carrying cases—you know that modelers anticipate the next year’s event the minute that the current one ends.

Frank Noll is the E-Fest event director and he, along with many volunteers, designed this gathering as a chance for people to get together with like-minded individuals, socialize, fly, and shake off the winter blues. “We’ve tried to stick to this philosophy over the years and to keep it enjoyable without making too many drastic changes,” Frank said.
Trends dictate some of the changes, and the staff occasionally tries out a new event to see what type of a response it receives, but the organizers stick to the popular standards, including Combat, balloon busts, and the Children’s Make-It-Take-It Airplane Launch.




The University of Illinois Track and Field Armory flightline as seen from the east end of the building. Tables for pilots lined the entire outer edge of the flightline, while vendors set up behind them along the building’s perimeter.



A few pilots, such as Rusty Dose and his son, Tom, tried FPV using micro aircraft such as gliders and multirotors.

F3P RC Indoor Aerobatic and 3-D-style foamie profile aircraft were popular with younger pilots and could be seen hovering in the air at the west end of the Armory throughout the event.


Registered pilots fill the floor when it’s time for Combat. Many bring several foamies or flying wings simply for this occasion, knowing that a complete airframe—or one capable of flying—might not come home. It’s essentially a demolition derby in the air. The objective is to be the “last man flying,” battling opponents’ aircraft until they fall from the sky.

Styrofoam pieces rain down, and spectators sometimes hear the loud “whap!” of two aircraft colliding. The armory floor is often littered with debris after this event, but the cheers (or boos) and laughter in anticipation of a hit tell the entire story—the pilots are having an awesome time.

One of this year’s main attractions was the Drone Flight School—an area where you could fly RealFlight Drone Flight Simulators and try your hand at the Altitude Control Station. After basic flight skills were achieved and a “flight permit” was earned, you could step into the Hobbico Drone Cage with an experienced pilot to assist you in flying a multirotor.




Josh Schiff, from Hobbico, helps a young pilot maneuver a drone in the Drone Cage. The Drone Flight School gave registered pilots and spectators a chance to fly the RealFlight Drone Flight Simulator, get the feel for the transmitter stick at the Attitude Control Station, and earn a flight permit before hands-on drone flying with an expert in the cage.


Several seminars and workshops highlighted information that included FAA Drone Regulations, Aerial Photography Tips and Tricks, Speed Controls for Quads, Build and Fly Your Drone Racer, and Unmanned Aircraft Systems, Operator Training. The seminars were informative and featured exceptional and knowledgeable speakers.

Bobby Watts, a well-known RC helicopter pilot and commercial drone pilot who specializes in aerial cinematography and videography, flew in from Florida for the event and spoke about using his expertise in the commercial film industry.

Another guest speaker on the seminar schedule was full-scale air show pilot and modeler, Matt Chapman. Matt took time out from his busy schedule to talk to attendees about how he worked his way up from flying model aircraft as a child, to his full-time career as a commercial pilot, to his time as an full-scale competition aerobatics pilot.

Matt currently flies in air shows across the country as an individual act and with the 4CE four-airplane formation team. His love of all things aviation was evident not only in his speech, but by watching him on the flightline when he flew alongside other pilots.

The Make-It-Take-It Airplane Launch is a thrill for children who attend E-Fest. Saturday afternoon, the make-and-take area is packed with children who design, color, and put together foam gliders of their own. At 5 p.m., the main flightline is closed to pilots, and children are invited out onto the armory floor for a mass launch—and en masse they come!



The Make-It-Take-It building area was busy Saturday afternoon with children building and decorating their own model gliders for free. The youngsters were invited to take part in a mass launch of their airplanes later in the day.

Matt Chapman enjoys a moment of flying RC at the main flightline. Matt, a commercial pilot and full-scale air show pilot sponsored by Embry-Riddle Aeronautical University, was a highlighted guest speaker.


From east to west, children filled the floor. On Frank’s count, dozens of foam gliders launched into the air! The kids had a ball, repeatedly throwing their airplanes as far as they could. Will we see any of these budding aviators return to E-Fest in another 10 years as pilots?

The day didn’t end with the children’s mass launch—in fact, far from it! There was plenty of competition and fun to be had until the doors closed at 8 p.m.

The Freestyle Airshow featured some of the top pilots in Indoor Precision/F3P-style flying and outdoor 3-D and RC Aerobatics, showing off their moves choreographed to music. Swooping high and low with turns, loops, and knife-edge passes, these fliers wowed the spectators, bringing cheers from throughout the armory.

Following the Freestyle Airshow was the fun and crazy Gauntlet obstacle course. Open to all registered pilots, speed and precision flying skills were tested as the pilots raced against one another under and over gates and through loops lit up by LED lights. Some were not so successful and a few even “pretended” to fly while holding their airplanes, throwing them through the obstacles, and running the length of the course. I’m not sure if pretend airplane sounds were included ...

The aforementioned Combat “Last Man Standing” competition showered foam and broken parts onto the armory floor before the lights went out for the Blackout Night Fly. Registered pilots were invited to rig their aircraft with LEDs and light up the air for the final event of the night. Some used strip LEDs around their airframes, while others used bright white lights on the wingtips that dazzled as the models swirled in the air. It’s a special, somewhat magical, part of E-Fest to see.




The Gauntlet is a fun and crazy obstacle course that gets laughs and cheers from pilots and spectators! Registered pilots tested their skills by racing their airplanes against each other up, over, and through obstacles in several heats.




Pilots always look forward to seeing broken parts and foam raining down on the floor during the Last One Standing Combat event. Knocking other aircraft out of the air and midair collisions are a part of the fun.


Although doors opened early on Sunday and there was open flying until early afternoon, many used this day to pack their aircraft, reflect on the day before, say their goodbyes, and leave for home. There were diehard pilots who stayed and flew until the end. I’m sure they wished that it wouldn’t end, and that it wasn’t another spring, summer, fall, and winter before the next event.

With E-Fest’s 10th anniversary come and gone, I asked Frank where he saw the event being in another 10 years. He told me, “The popularity of indoor flying and the advancement of technology will dictate a lot of what happens. Everything in our hobby is cyclic, as we’re all aware, so as long as it remains popular, there’s really no need to change much. We’ll just have to wait and see where it takes us!”

If you have never visited the University of Illinois Track and Field Armory in the middle of winter for the E-Fest Indoor Electric event, hosted by Hobbico, put the 11th anniversary on your calendar. It definitely beats the winter doldrums when you have an excuse to celebrate and fly!
—Jennifer Alderman
jennifer@modelaircraft.org


Sources

E-Fest
www.hobbico-efest.com/index.html


Bonus Photos

Model Aviation Magazine - E-Fest 2016




FPV Racing

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Written by Rachelle Haughn
A new sport continues to evolve
As seen in the June 2016 issue of
Model Aviation.


Do you get an adrenaline rush when you take your model airplane out for its maiden flight? Do you ever imagine you are piloting the aircraft from the cockpit—putting on an aerial demonstration, flying in combat, or racing? At the end of your flight you receive congratulations over the radio … wait … that’s your spotter saying that you are cleared for landing.

Technological advances have made it possible for you to feel as though you are in the cockpit of an aircraft. What began with attaching a still or video camera to a model airplane to get a view from the pilot’s seat has evolved into buying multirotors with tiny preinstalled cameras.

Instead of standing around and waiting for your turn to take off from the flightline, you can sit on a comfy camp chair, wear a set of goggles, and your quadcopter can lift off from the grass. In addition to the amazing view from the sky, you can also race against others and win up to $1 million by doing it. You might have blinked or rubbed your eyes, but yes, you read that correctly.

Welcome to the ever-growing and evolving world of multirotor FPV racing. The more you compete and win, the more money is at stake—along with bragging rights, of course. This form of racing might seem foreign and new to you, but it is quickly becoming one of the most popular activities in the US and overseas.

There are several reasons for why people are deciding to take up the sport, but an obvious one is the low cost of equipment. “I’d say a fair estimate would be $300 for the goggles and the model,” stated FPV racer Matt Kloss. “[That] is pretty cheap if you compare it to anything else in the hobby.”

Matt also flies model helicopters and Two-Meter Pattern (RC Aerobatics) aircraft. He said that $300 would buy a propeller for a Pattern airplane, or three servos for a helicopter.

Chris Thomas, founder and president of Florida-based MultiGP, estimated the cost to get started in FPV Racing to be higher. He said the average cost for goggles is $200 to $500, and the cost for a multirotor is also $200 to $500. According to Chris, these estimates do not include the cost of a transmitter or a receiver.




Matt Kloss, a model helicopter pilot, recently started competing in FPV multirotor racing. He finds the sport exciting and challenging. Photo provided by Matt Kloss.




Chris Thomas, of MultiGP, addresses pilots at one of his company’s FPV multirotor races. His company designed software to make races run smoother. Photo provided by Chris Thomas.


If something goes wrong, repairing a crashed multirotor is simpler and more affordable than repairing a Pattern airplane, Matt said. “I crash [multirotors] very frequently. It’s absolutely less expensive to fix. If you crash your mulitorotor, you buy parts. If you crash an airplane, you buy a new airplane.” Lightweight, composite aircraft used for Pattern cannot be fixed, he stated.

The quadcopter that Matt races the most is a ZMR 250mm, which is sold as a carbon-fiber frame with four arms. It is a mini quadcopter to which pilots must add motors, ESCs, flight controllers, standoffs, and propellers.

Matt said there are several options when it comes to buying multirotors for FPV racing. Many companies sell kits that require a pilot to add his or her own hardware and electronics. There are also kits that come with everything needed to race, but require assembly. A few others come out of the box ready to fly, he added.

Aside from the fact that multirotors are affordable, Matt likes FPV racing because it’s fun. “It’s pretty fast and there’s a lot of maneuverability involved. It’s pretty exciting to do,” Matt commented.

Adding to the excitement is the fact that technology continues to improve, especially when it comes to the virtual-reality aspect. That’s what caught the attention of aeromodeler Scot Refsland. Scot saw a video of FPV racing online, and when he learned that the sport combined virtual reality and multirotor aircraft, “I jumped in hook, line, and sinker,” he said.

Scot took up FPV racing in August 2014, after years of flying Control Line Combat, RC, gas-powered model aircraft, and gliders. Today he also co-owns a race-organizing company called RotorSports. He enjoys flying FPV with his kids.




During an FPV multirotor race, pilots wear goggles that provide a view from the cockpit of their aircraft as they race around and through obstacles. Thomas photo.




The company that Scot co-owns, RotorSports, is developing a simulator game with “to scale” environments. This screenshot is at Kualoa Ranch in Hawaii, where the first AMA-sanctioned 2016 World Drone Racing Championships will take place. Refsland photo.


Scot is creating a timeline of the history of FPV racing for AMA’s National Model Aviation Museum, located in Muncie, Indiana. He said that the first documented FPV multirotor race was held November 3, 2012, and there is an online video of the race (see the video at the end of this story).

As more people learned about this exciting sport, races began popping up across the country. Those who were organizing the events quickly discovered that they needed some guidance for setting up the competitions. That’s when groups such as MultiGP; Scot’s group of FPV pilots, FPV Racers and Explorers; and the International Drone Racing Association (IDRA) began to form.

Fast-forward to 2016 and there are several multirotor magazines, regional, national, and world championships for FPV racing, as well as online news programs. Multirotors are sold practically everywhere. Multirotors of all shapes and sizes were some of the hottest Christmas gifts in 2015.

With the surging popularity of multirotors, AMA and other model aircraft organizations began to welcome multirotor pilots into the fold. AMA even established its own set of safety guidelines for members who choose to fly FPV. In 2015, AMA took this a step further and named MultiGP as its first FPV racing Special Interest Group.




In 2015, for the first time, an FPV multirotor race was part of the International Radio Controlled Helicopter Association Jamboree. This race was held at AMA Headquarters, in Muncie IN. Photo by Jennifer Alderman.


Chris began organizing MultiGP in April 2015, after watching his first FPV race. Although he enjoyed the race and was impressed by the speed and skill involved, he wondered if there was a way to make the competition run smoother.

He put together a team of professionals with the goal of creating helpful tools and resources for FPV pilots and those who were running the races. The team eventually developed frequency management software called RaceSync. It is now trademarked and used by FPV pilots and event organizers across the country.

“My mission is [that] we’re trying to make a sport similar to soccer,” Chris stated. “A field in every city and a coach for every field. Safety is my number-one concern.”

In addition to offering the software, MultiGP has encouraged groups of FPV racers in the US to start their own MultiGP chapters. At the time of this writing, there were 266 chapters.

Since it was formed, MultiGP has held more than 2,000 races. The group will hold the 2016 Drone Racing Championship Labor Day weekend at AMA Headquarters, in Muncie, Indiana.

According to MultiGP’s website, becoming a chapter has several benefits, including the use of the RaceSync software, racing gates that are easy to transport and set up, a timing system, signs, access to rules and other documents to help promote the race, and information about how to get races sponsored. It is free to form a MultiGP chapter, and is done simply by filling out an application on MultiGP’s website.

Scot said that MultiGP is a great source for those who want to organize a race. He added that the IDRA is the best source for large-scale or international races. His company, RotorSports, typically helps county, state, public, or nonprofit groups set up races.

The first race that RotorSports put together was the also the first “official” FPV multirotor race that AMA sanctioned. It was held April 30, 2015, at a sports stadium as part of the DATA X Conference, in Santa Cruz, California. The winner of the race was Zoe Stumbaugh and she later donated her winning Spider Hex Rat aircraft and FPV goggles to AMA’s National Model Aviation Museum.

Also in 2015, the first national FPV multirotor race was held. The 2015 Fat Shark US National Drone Racing Championships took place at the California State Fair, on July 15-17. Out of the 120 pilots who competed, Chad Nowak, aka FinalGlideAUS, took the top spot. Michael Smith, National Model Aviation Museum director, said that Scot is working to get Chad’s multirotor donated to the museum.




The first official drone race that AMA sanctioned was held in Santa Cruz CA. Zoe Stumbaugh (front, far R) won the race and later donated her quadcopter to AMA’s National Model Aviation Museum. Also pictured is Rich Hanson (back row, far L), AMA’s Government and Regulatory Affairs Representative. Refsland photo.



The inaugural US National Drone Racing Championships was held July 15-17 at the California State Fair. This year’s competition will take place in New York City. Scot Refsland photo.


This year, FPV multirotor races are expected to be bigger and the stakes will be higher. The World Drone Prix, that was held March 11-12 in Dubai United Arab Emirates, had $1 million in prize money. To qualify for this competition, teams had to compete in other races throughout the world. Several Americans were among those who raced in the World Drone Prix.

Later this year, pilots from more than 30 countries are expected to travel to Kualoa Ranch, Hawaii, to compete for $200,000 in prizes. The 2016 World Drone Racing Championships, an AMA-sanctioned race, will be held October 17-22. Kualoa Ranch has been the filming location for several popular movies, such as Jurassic Park and Godzilla.

Any FPV race that is sanctioned by AMA requires the racers to have an AMA membership. On a smaller scale, the AMA-sanctioned US National Drone Racing Championships will be held August 5-7 in New York City. Teams will be vying for a cool $50,000.

At this point, you might be seeing dollar signs and wondering how you can get started in this popular and exciting sport. You should know that whether you have flown model aircraft in the past, or if you have never touched a transmitter in your life, doesn’t seem to matter.

Multirotor FPV races are set up as a course with obstacles. The obstacles can be manmade, such as circles or gates to go through, or bridges to fly under. Some are natural obstacles including trees and rivers. The pilot flies the entire race from the view of the cockpit using goggles, and what he or she sees can be displayed on a special monitor, such as a tablet.




National Model Aviation Day 2015 featured a multirotor race at AMA Headquarters. Large monitors positioned near the bleachers allowed spectators to get a view from the cockpit. Here, Barry Flanary gets his septocopter ready to race. Behind him is one of the gates through which the multirotors were required to fly. Photo by the author.


“When you race, you’re kind of numb to the world, I guess. The time you land is kind of when the adrenaline hits because you realize if you lost or won,” Matt said of the experience. At the time of this writing, he had participated in nine FPV races.

The races are timed and broken into heats. The pilots are separated into classes based on either the battery and propeller size or the size of the multirotors that are being flown. The pilots in each class race against each other in a heat. The races in which Matt has flown have had an open class, a class for multirotors with 5-inch propellers and 3S LiPo batteries, a class for multirotors that are 250mm diagonal or more from motor to motor, and those that are less than 250mm. Matt said that there is often a winner in each class.

MultiGP breaks its races into classes based on aircraft specifications. There is a 3S class, a 4S class, and an open class. The 3S class is designed for beginners, and the aircraft use 3S LiPo batteries. The multirotors in the 4S class, which is tailored for advanced FPV racing pilots, have 4S LiPo batteries. The open class is available to all multirotors and is “designed to promote competition between all styles and configurations of aircraft to help evolve innovation in technology and design,” according to MultiGP’s website.

In addition to MultiGP, Ready Made RC coordinates FPV races. Matt said he has flown in races coordinated by both companies, and all were well organized.

MultiGP’s timing system for races is installed on the start/finish gate. Each pilot’s lap time is tracked through a small, lightweight sensor that is attached to the aircraft. This data is transmitted to a laptop computer for the judges to view. The pilot with the fastest time wins.




This is what the takeoff area looks like at a race run by MultiGP. The first obstacle that the multirotors must go through is a starting gate. This gate has sensors on it that track the multirotors’ times. Thomas photo.


The fastest times appear to be getting faster. According to Scot, his company designs its FPV racing courses to limit the aircraft’s top speeds to 60 mph. In the most recent race that Scot’s company organized, “the racers clocked 90 to 100 mph,” he said.

Scot noted that one of his goals is to get more national exposure for the sport. He would like to see FPV races broadcast on sports and news networks and find a way to better engage spectators. He believes that FPV will continue to grow and thrive.

If being a spectator is not enough and you want to play a bigger part in the hottest new sport in the US, getting started in FPV multirotor racing is probably easier than you expect. Matt suggested that those who are interested start by joining a local multirotor club and spending some time at the group’s flying site. He said clubs are good at giving new pilots advice and tips.

Scot suggested that pilots begin by holding casual weekend races. From there, they can start an online meetup group or form a MultiGP chapter.

So, what are you waiting for? It’s time to connect your batteries, put on some goggles, and get your adrenaline rush on with FPV racing!
—Rachelle Haughn
rachelleh@modelaircraft.org


First known FPV drone race


2015 US Drone Nationals Course Tour


Sources

MultiGP
www.multigp.com

Ready Made RC
www.readymaderc.com

AMA
www.modelaircraft.org

US National Drone Racing Championships
www.dronenationals.com

2016 World Drone Racing Championships
www.droneworlds.com

IDRA
www.idra.co

FPV Racers and Explorers
www.meetup.com/FPVracers/events/221472016

First documented drone race
https://vimeo.com/52734031

RotorSports
www.rotorsports.com




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