hi i have a motorize bike project, its a friction setup I'm making (engine on right of bike), using the rear end of a hoped sport, basically i need the Chung yang 26cc engine to run n reverse (so bike goes forward) the way iv built it makes it too hard for me to mount engine on other side etc, i was told all i have to do is retime ignition?? ,but if in reverse with the bolt holding the spindle to crankshaft come lose (will i need to change crankshaft to left thread?)... i also have a goped geo sport with the engine on the right side to that needs a new motor? what if i put another cy 26cc on the goped but use the ild goped motors magneto on the cy26cc to adjust timing??? i really don't know what I'm doing in terms of running them in reverse :-/ so any help is greatly appreciated, thanks , josh