Originally Posted by ProDigit
Actually, I presume, but don't know for sure, that the tire could be in the way of the chain and the engine.
You'd have to have some way to mount the sprocket further away from the spokes.
If you look at this picture, you will see that it doesn't look like the rear sprocket would be a big problem. The hub is wide and if you can get a sprocket adapter it should work great.