I'm building the bicycle right now to put the motor in. I have a pretty sweet 3speed hub that just rebuilt not to long ago. I thought it would be neat to use with the engine kit because I have a Bendix sitck shifter to go with it. I just don't know if I should set the bike up with the 3speed set up because the hub is about three inches round and I don't know if the 44 tooth sproket will be able to mount on there. I haven't got my engine yet but I wanted to get the bicycle done before I get it.