"My only worry would be the motors. No two motors are exactly alike and it would be impossible to synch them."

So, according to your logic this 24 chainsaw motorbike is "impossible"? - http://www.motorcyclecity.com/bikewatch/Chain_Saw_Bike_Dolmette.htm <img src="/forums/images/graemlins/smile.gif" alt="" /> <img src="/forums/images/graemlins/smile.gif" alt="" /> <img src="/forums/images/graemlins/smile.gif" alt="" />