Great Planes 1.60-50cc Reactor ARF GPMA1420

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This is the Great Planes 1.60-50cc Reactor ARF Airplane. This airplane is ideal for a flyer's first giant scale aerobatic and 3D airplane and is IMAA Legal.

The Great Planes Reactor has excelled under electric and glow power, as a biplane and a mono-plane. Now it really hits the big time by expanding to IMAA-legal dimensions with performance that's better than ever. At low speeds, the giant-scale Reactor flies true and solid. But for an all-out 3D machine, install a 50 cc gasoline engine and increase the throws!

Pre-built and covered wings, fuselage and tail assemblies, pushrods, landing gear, wheels, wheel pants, cowl, fuel tank, wood servo trays, aluminum spinner two decal sheets, hardware package, photo-illustrated instructions

Engine: 1.60 - 2.10 cu in (26 - 34cc) two-stroke OR
2.00 - 2.20 cu in (33 - 36cc) four-stroke OR
2.5 - 3.0 cu in (43 - 50cc) gasoline OR
80-75-230 Outrunner Brushless Motor
Radio: 5-6 channel, 6-channel computer radio recommended
Servos: Eight, 7 high-torque, 1 standard ball bearing
6" (152mm) Heavy Duty Servo Extensions: Two/inboard aileron control
24" (610mm) Heavy Duty Servo Extensions: Two/outboard aileron control
36" (914mm) Heavy Duty Servo Extensions: Three for tail servos
1.5" (38mm) Large Scale Single Side Servo Arms: Seven
Y-Harness: Two heavy duty
Receiver Battery: 4.8 or 6V at least 4200mAh
Heavy duty switch harness and charge jack
#4 Plastic Washers: For cowl
Misc. Items: Building and field equipment
  • Made of laser cut balsa and plywood with a foam sheeted turtle deck
  • Two-piece wings that bolt-on with aluminum joiner tube
  • TopFlite MonoKote covering
  • Pre bent aluminum landing gear, 0.16" (4mm) thick
  • Main wheels, 3.5" (88mm) diameter foam, tailwheel, 1" (25.4mm) rubber
  • Radio compartment's hatch removes easily with four bolts
  • Aluminum spinner, 3.25" (82.5mm) diameter
  • Painted fiberglass cowl
  • Painted fiberglass wheel pants
  • Clear molded plastic canopy
  • Dual servo aileron control
  • Dual servo elevator control
  • Approximately 24oz (720cc) fuel tank for glow fuel, must purchase gasoline conversion kit and tubing if using gasoline engine
  • Two piece composite engine mount
  • Full set of hardware is provided, IMAA legal
  • Assembly Time: Only 15-20 hours
  • Warranty Period (through the manufacturer): Great Planes guarantees this kit free from defects in both material and workmanship at the date of purchase.
Wingspan: 84.5" (2140mm)
Wing Area: 1556 sq in (100.4 sq dm)
Weight: 14 - 17 lb (6.35 -7.71 kg) depending on power setup selected
Length: 85" (2160mm)
Airfoil: Fully symmetrical
Center of Gravity: 7" (178mm) from the leading edge of the root wing rib

Control Throws
1" (25mm) 10 degrees
Rudder: 2-3/4" (70mm) 16 degrees
Ailerons: 1-1/2" (38mm) 11 degrees

1-1/2" (38mm) 15 degrees
Rudder: 4-3/4" (121mm) 28 degrees
Ailerons: 2-1/2" (64mm)  19 degrees

3-1/4" (83mm) 34 degrees
Rudder: 5-3/4" (146mm) 35 degrees
Ailerons: 4-1/2" (114mm) 36 degrees

Review Summary