Re: Micargi Rover 7 speed.
Check out this thread http://motorbicycling.com/f3/pirate-...tml#post145755
and see what you think of those motors. Even if it is a little above your 150$ budget I think it would be worth every penny.
"I would rather be exposed to the inconveniences attending too much liberty than to those attending too small a degree of it." - Thomas Jefferson