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106″ Demonstrator Edge 540

3DRC Hobbies Demonstrator Edge

3DRC Hobbies latest edition to our ever growing and changing hanger of 3D Aerobatic airplanes! This special Edge 540 has been equipped with a DA-120 twin cylinder 120cc 12hp engine and Falcon carbon fiber 27 x 11 propeller. It is controlled by a Jeti radio, which is one of the world’s most advanced rc radio systems. Control surfaces are activated by MKS X8 HBL380 high torque, high voltage servos.

Specification:

Winspan: 106″
Length: 103″
Wing Area: 2025 Sq. Inches
Weight 26 lbs.

Equipment:

  • Desert Aircraft DA-120 engine 120cc (12hp)
  • Falcon Carbon Fiber 27″ x 11″ propeller
  • AeroLite Mfg 1″ aluminum engine mount
  • SWB Doublelock servo arms
  • Fourtitude 32 Fuel Tank
  • Fourtitude 32 Smoke Tank
  • Morse Aircraft Development (M.A.D Fab RC) 32oz Dual Fuel Cage
  • JEM Aluminum Fuel Dots

Electronics:

  • Jeti DS-16 24 channel transmitter
  • Jeti CB200 Power Distribution Unit w/three R3/RSW Receivers
  • 8 – MKS X8 HBL380 servos (Torque: 569.38 oz/in / Speed: 0.082 sec)
  • Tech Aero IBEC Ignition Engine Kill Switch
  • Powerbox Smoke Pump
  • 2 – PULSE LIPO 3600mAh 7.4V RX- Ultra Power Series Batteries
  • Morse Aircraft Development (M.A.D Fab RC) Jeti CB200 Mount
  • Morse Aircraft Development (M.A.D Fab RC) Jeti Antenna Mounts

The 3DHS Demonstrator Edge 540 features many forward thinking ideas and concepts that make it a truly unique model among the current ARF offerings. It features an amazing color scheme designed by Arron Bates that takes full advantage of the new photo-realistic print technology we have pioneered. Carbon ghost flames, pinstripes and fades that are reminiscent of a custom painted hotrod are all part of what may be the coolest ARF color scheme ever produced! And just wait until you pull the canopy off and look inside! Carbon fiber everywhere! A large portion of the interior is made from carbon fiber laminated plywood and features carbon fiber longerons, carbon fiber laminated wing root, carbon fiber wing tube, stab tube, main gear, tailwheel and a specially painted carbon fiber spinner to match the color scheme.

The Edge 540 is a legendary full scale aerobatic aircraft, unique for its distinctive straight leading edge wing. Nothing else looks like an Edge in the air. The wing design, however, is not just for looks. The straight leading edge and forward swept trailing edge give the wing distinctive flight characteristics in 3D flight. You’ll notice easier, more instinctive, and smoother harrier flights, as harrier turns, even tight ones, require less compensation from other controls. The result is a big friendly airplane that you can toss around down low with total confidence.

104 inch 3dhs slick
 

I’d just like to tell a little about my 104″ 3DHS Slick Giant Scale RC Airplane. This 26 lb. airplane is powered by a Desert Aircraft DA-120 cc 2 cylinder gas engine which produces about 12 horsepower at 6800 rpm’s. The engine is mounted onto the engine motorbox by a Aerolite Mfg DA-120 one inch aluminum cnc machined standoff mount. It is supplied fuel from a 32 ounce tank located inside the fuselage near the front of the airplane. The fuel is a 91 octane gasoline mixed with a 2 stroke oil at a mixture of 40/1 which means that there is 40 parts of gasoline to 1 part oil.

da-120 engine mount 3drc aerolite mfg
The control of the airplane is handled by a Futaba 14sg 14 channel radio control system that uses the 2.4 frequency band, and is operated by a transmitter on the ground and a receiver inside the aircraft. Inside of my airplane there are two Futaba high voltage 7.4 volt receivers and 8 high voltage Futaba BLS172SV servos with over 500 inches of torque at 7.4 volts. The receiver acts basically as the brain of the aircraft and the servos act like the muscles. The servos get their signals to move from the transmitter and then through the receivers, once told to move the servos rotate their arms in the direction they are told to move which moves the control surfaces such as the ailerons, elevator and the rudder. I chose to use dual receivers for redundancy, each receiver controls one side of the aircraft so that if somehow one receiver is damaged or fails to read the signals from the transmitter the other can still control it’s half of the airplane.

104 aj slick 3d rc airplane futaba
The radio system in the airplane gets it’s power from two lithium polymer 2 cell 7.4 volt 3,300 mah Thunder Power rechargeable batteries. These two batteries plug into a Fromeco Wolverine switch independently and are shared by both receivers. The Fromco Wolverine switch is made to share the batteries, if one battery for whatever reason fails then the switch will automatically switch to the other battery.

104 aj slick 3d rc airplane smoke system
The Desert Aircraft DA-120 is fed the gas mixture by a fuel system that uses a 32 once Fourtitude fuel tank, which will allow anywhere from 7-12 minutes of flight time depending on the use of the throttle. I also have a smoke system that can be turned on or off by a toggle switch on the Futaba transmitter, and can be adjusted to get the perfect mix of heat from the engine exhaust within the mufflers. The dual mufflers are Desert Aircraft Compact 120’s which have a single jet installed into each one that allows smoke oil to enter the muffler and sprayed into the hot exhaust stream where it vaporizes into the smoke. I am also using another 32 once Fourtitude tank that is designed not for gasoline but for smoke oil. The oil is pumped out of the it’s tank by a Harris smoke oil pump and through a a one way check valve that only allows the oil to travel towards the mufflers and not back.

104 aj slick 3d rc airplane smoke on
I’ve recently designed a se of Side Force Generators (SFG’s) for the 104″ 3DHS Slick which aid some in knife edge flight and flat rudder turns, please they just look pretty cool to me.

104 aj slick sfg
 

joe nall 3d rc flying rc model airplane

We are excited to be attending Joe Nall held at the Triple Tree Aerodrome in Woodruff, SC. the largest RC event in the world May 6th thru 14th 2016. This will be our first time going to this awesome event, which has been held every year since 1983 and named the Joe Nall in 2000.

Flight Lines

Main (Classic) Flight Line
For Giant Scale models meeting IMAA specs. Fly in a racetrack pattern.

80″ mono-wing, 60 biplane, 1/4 scale.

6 pilot stations

3D Line
For Giant Scale models meeting IMAA specs. Fly full out 3D.

80″ mono-wing, 60 bipe, 1/4 scale

5 pilot stations

Float Line
Float planes of all types. (boats are also allowed off to the side)

No size restrictions.

5 pilot stations

Park Flyer
Electric Park flyer and slow flyer style planes. Flying style open to pilots.

Less than 80″

5 pilot stations

Helicopter
All heli’s here.

No size restriction,

7 pilot stations

Control Line

3d rc model airplane
Flying 3D is flying an RC aircraft to its extreme limits. It is basically keeping a plane airborne by the thrust of its prop, not the lift from it’s wing. A 3D flyer keeps his aircraft at a near stall or “High Alpha” condition. To do this requires a plane with a very high thrust to weight ratio. A classic example is a “Hover”. This is basically hanging an aircraft from it’s nose and flying vertically, with no sideways, or lateral movement (like a helicopter).

In earlier days this type flying wasn’t called 3d flying, it was commonly called “Hot Dogging” or “Free Style” flying.

3D flying takes a lot of practice and is generally considered “advanced” flying. It can be very unstable. It takes a mastery of all flight regimes and a keen ability of flight control skills. Getting an airplane to hover is a lot like trying to balance a pencil on the end of your finger. It takes constant power, rudder, elevator, and aileron corrections to keep it steady.

There are variety of 3D type aircraft on the market. Indoor/outdoor flyers, foamies, profiles, balsas etc. 3D can be done at the field, a local park, or even in a gymnasium. The internet is a major source of information.

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