First time user and new motor owner The state where I live is very restictive on motorised bikes. Limit is 49cc & 200watts. Hello . . . totally useless with all our hills - so my bike is a Rock Solid Engines 68cc on an old 26" mountain bike. I am looking to change this to a cruiser style bike which are expensive and limited in choice here. What I really want is to have a rear motor sprocket attached to the rear hub and not on the spokes.