Their is a electric hub installed already and I would like to attach a sprocket to the wheel spokes or the hub itself. May not to do what I want to but need advice. It is a Schwinn StingRay Electric. I have looked at it and thought about going to the front wheel but don't want to do that. I am thinking of mounting the engine above the rear wheel and running the chain down to the sprocket. Open to any ideas.

Thanks, Jim