Zap, Thats about the coolest one I've seen so
far...in the exact same setup...which do you think
would work better....an Ametek or treadmill
motor?

remember this one....from a posting I did a few
years back?
I actually charged that little 6v 'powerwheels'
battery by handcranking the lawnmower wheel.
See the knob...the chrome socket screwed into the
side of the rubber tire with a lag screw?
All that's needed is a bigger tire and belt.
Got any data on the performance of your machine?