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Piper J-3 (Semi Scale)

The Piper J-3(Semi Scale) kit is very much suits for you who want to practice an experience in building a balsa airplane kit by yourself and get the experience in flying an airplane with tail wheel. With new designed for COX SS.049 engine with out runner brushless motor compatible it offer this model excellent handling while take off, landing and making a low flyby. This Piper J-3 will provide hours of big airplane enjoyment on a small model budget. The balsa wood construction make the model can be covered with the same color scheme and easily to recreates to the original.

- Wingspan 39 in.
- Fuselage length 25 in.
- Wing load 11 oz./sq. ft.
- 4 Channel radio system driving 5 mini servos
- Steerable Tail wheel
- Flying weight with fuel 515 grams
- .049 COX engine
- Fuel tank capacity 25 C.C. (Nitro 10%)
- Propeller + Spinner 6 x 3 Power output approximate 12,000 rpm
- Fight Time 12 mins
- Building time 12-16 hours
- Price 59 USD (Engine, power system and shipping not included)


Opening the box you will found the following kit package;

  1. Auto Cad plan sheet A1 1:1 and CNC cut parts diagram
  2. Step-by-step instruction manual
  3. Hardware pack
  4. 2.5 mm and 6.0 mm. balsa wood pack
  5. Fuselage and wing content pack
  6. Covering film, decal and windows template pack. You can select one of the four available scheme;
    Yellow scheme; Yellow Covering film 4 ft , Gray ½ ft , Black ½ ft
    Blue scheme; Blue Covering film 4 ft , Gray ½ ft, White ½ ft
    White scheme; White Covering film  4 ft , Gray ½ ft, Red ½ ft
    Red scheme; Red Covering film  4 ft, Gray ½ ft, White ½ ft

                        *** CA glue and Epoxy not included ***

Piper J-3 (Semi Scale) Package details

The photo of fuselage parts cut with CNC

The photo of wings components including LE, spar, TE and ailerons cut with CNC

The photo of the 2.5 mm. and 6.0 mm. balsa wood cut with CNC

The photo of the hardware set

The adjustable engine mount for Cox SS .049 engine (Out Runner motor compatible)


Piper J-3 (Semi Scale)  at flying field

Before First Flight at the local airfield

C.G. should locate under wing spar. Checking the center of gravity of the model to slightly nose heavy 2-3 degree

Flying weight should not exceed 515 grams. Taking off from pavement happens in about 10 m. with little headwind

Making a Low Pass

If you preferred for the electric flight, you can install Motor BL 2205 /1800 Kv, propeller 8060, Batt Li-poly 11.1V 1000-1200 mAh and ESC 12 A. Flying weight should not exceed 520 g

Hope you enjoy with building and pleasant to fly your Piper CubJ-3(Semi Scale). Thank you, Chin Model Air Craft