RE: HANGAR 9 Piper J-3 Cub 40 Conversion
I just maidened my Hangar 9 Cub last week. Here is my power setup:
Motor: AXI 4120/18
Battery: Tanic 5S1P 5000 MAH
ESC: Phoenix 60
Prop: Zinger wood 13X10
This combo runs 855 watts at 45 amps and has more than enough power. I can fly it for at least 30 minutes on one charge.
I've tried APC 14X10 and it pulls 1090 watts at 55 amps-way too much. An APC 14X8.5 is much better and it pulls 845 watts at 44 amps. I like the wood prop because it looks more scale like.
This is a beautiful looking and flying airplane with an electric setup. With this motor, you could also add floats at a later time and still have enough power.