I currently have a Wing Dragon 4. For anyone unfamiliar with it, the Wing Dragon is a 4 channel pusher prop trainer (From hobby-lobby). It has an 8 cell nimh battery (9.6v) and swings a 7 inch pusher prop (I don't know what pitch). I have flown it for a while, and would like to put a more powerful motor in it.

I have the option of using a friend's Neumotor 1110/2y/4.4 (4.4 is the gear box ratio). He also has a 70A Jeti Speed controller.

How do I tell if I can use my current battery with that motor and speed controller, and what prop do I use? I can't go bigger than the 7 inch prop, as there is no more room, and it has to be a pusher. Will that hardware work?

(I know I might be better served by building/buying a new plane, or using a different motor, but this option would cost me almost nothing, so I'd like to know if it's possible.)

One thing about electrics, you can't hurt the motor or ESC by running too small of a prop. The motor just won't run efficiently.

I don't know anything about that motor, but you should be able to look up some info on it, specfically if it mentions a max voltage, max current, or max watts. You can calculate back from there. The voltage is often reported as number of cells, either number of lipos or number of Ni-based cells, and you can do the conversion from there.

I will say that at a guess, that motor isn't going to be a great choice. Usually geared motors are geared to allow them to turn a larger prop at lower RPM. If you're using a 7" prop, you're probably running direct drive, and at a higher RPM. So I suspect that the motor will be under-loaded with a 7" prop on it, and won't be turning fast enough to produce much power.

I am guessing a bit here though, since I don't know the motor.

I just googled the motor, and holy cow, talk about over kill.

http://www.nesail.com/detail.php?productID=3872

400 watts, with 550 watts for 30 seconds, up to 24 volts.

What's the capacity of your battery? You might want to make sure you don't pull too much current for it.

One thing you might not realize about electric motors, if you put a larger motor in to a plane, but keep the same battery and prop, the performance won't really change unless you previously had a really under-sized motor. Sure, there are differences in motors, but they are fairly small compared to the differneces in batteries.

I suspect that motor/controller is heavier than what you have now. I'm not sure you'll get enough extra power to make up for that extra weight.

Anyway, you won't smoke anything, so yes, you can put that motor in your plane. I bet you don't get a noticeable improvement, and you might get a performance drop. Put a bigger battery in there like a 3 or 4 cell lipo and that motor makes more sense.

the battery is a 9.6v, 8 cell, nmhi, 1000mah... if i put in a better battery, like a 3 cell lipo, what prop should i use? remember, it's a pusher and i'm limited to 7 inches