Hobbles,
I reread your post and now realize that you might not be talking about building a motorized bicycle. In that case I have a sprocket made for a shaft. Let me give you the specs and the manufacturer.
The hole in the sprocket for the shaft is regular keyed ( like most pulleys)...
Hi Hobbles,
I think your best bet is to attach a soft neoprene wheel on the end of the motor shaft.
Something like a skateboard wheel would do. Attach the motor behind the seat post of the bicycle so the neoprene wheel is pressing against the top of the rear tire. (make sure the rotation of...