You could always put a front wheel hub motor on it. It's been a long time since I rode one of those. If the pedals don't move when the wheel moves, yeah, it'd be easy to install. No problem. If it's one of those where the pedals have to move whenever the wheel moves then it'd be a little more of a pain to install. That'd be the only complication I think. I can't remember how those brakes work. I don't know if those kind of brakes would work well on a rear wheel hub.
Last edited by morph999; 01-26-11 at 02:22 PM.