haoleman,
if you are looking to build something like a .40 size kit and you want to power it with electrics, i have a bit of advice. BRUSHLESS. for something that size brushless is the real key. however, brushless motors are expensivebut i can help here.. while i do not have a motor to give away, i can give some advice. i have recently got into the do-it-yourself brushless thing. it saves you a load of $$ and it is really not tough to do. most people use CD rom drive motors, which are around 9 pole, 22 mm or so. they wil power a small electric model. here's where my advice comes in. If you have an old VCR you would be willing to destroy, there is a motor called a capstan motor inside. it's nestled in the gears usually below the spindle motor. (the spindle motor is the silver one you see that is crooked when you open up the VCR to put a tape in). capstan motors are ideal for this application. i recently dis-assembled one to find a 24 pole, 56 mm stator and extremely light rotor. this will easily swing a 14" electric prop direct drive due to it's diameter. also, because it has a VERY wide diameter but the poles are not that big, it will not draw much current for the kind of torque it puts out. while i have not yet done formal tests on it, (i do not have the controller to drive it yet) i am making an educated guess of about 30 amps, about the same as most high performance RC cars, if you are familliar with them. If my guess is anywhere near the actual figures, a comprable motor would cost well over $200 retail.

If you are looking into a smaller kit, like little electrics, i would suggest www.gobrushless.com as it will provide you with all the parts to make your own and save some $$. the GBV kit costs $8 and is roughly equivelant to a speed 400 motor when wound correctly. a comprable brushless motor would cost about $60. it comes with all the parts you need, including wire, case, magnets, EVERYTHING.

Or, if you prefer to spend the extra $$ on a pre-made one, you can find a good selection of them at www.balsapr.com at pretty reasonable prices.

at any rate, if you intend to go electric, i would visit that site anyway because they have all the components you will need to get about any size electric running and running well. they used to be just cheap GWS stuff, but they have grown into a pretty respectable business. i would order from them any day.

Cheers,
Spaceclam