Don, thanks for the info. I know now that I will get going in the right direction.... A couple more questions if you don't mind.

I am guessing because there is an ESC, that no on-off switch is necessary for the radio and that plugging the motor battery would effectively be the switch. Is this correct?

What is a good entry level battery charger to begin with? I am working with a severly limited budget, but I imagine the charge the batteries recieve would have significant effects on motor runs, and in the end the speed of the racer...

In looking at many of the current sp400 racers on the market, I see no vents for cooling the battpack. Are they not necessary because of the short motor runs, or are people just under the impression they would just cause too much drag?

All of the current designs I have looked at have 2 ailerons. All of our old half-a pylon designs tended to have 1. Any thoughts on a single aileron sp400 racer?

Thanks again for the great answers.