View Full Version : 35 oz J3 Cub > electric

07-13-2006, 03:48 AM
Hi All,

I have a 35 oz (ly weight) J-3 Cub I'd like to convert to electric. I'm planning on a 2500mHA Li-po battery. Any ideas on brushless motor/prop combo that would be a good fit for this slow flyer. I'm not into hot speed just simple aerobotic manuevers.
Many Thanks,

Matt Kirsch
07-14-2006, 02:41 PM
Whose Cub is this? What size engine do they recommend? What is the listed all-up, ready-to-fly weight of the plane with glow engine power (not sure what "ly weight" is)?

(FYI I ask "What size engine?" not because I have some magical chart that tells me which motor to use, but because the engine size gives me an idea of how big the plane is and how heavy it is)

07-14-2006, 09:09 PM
It's a Midwest Piper J-3 Cub. An old glow kit. Engine size is .09 (or a .15 for fast flying.) Flying weight is 2 lbs 3 oz as configured with .09 engine. WS=45" WA=290 sq in. This is all the info I have on the model.

08-04-2006, 10:57 PM
We almost have the same plane and question. My Cub has a 49.6" span and also weighs 2 lbs. 3 oz. stated using a .15 size eng. I am going with a 25 amp 1100 kv outrunner. What I'm wondering is if the 11.1V, 1300 mAh, 12C lipos I have will work for some lazy flying?