Okey Dokey. So i'm a poor uni bum who needs to get to and fro'. I went out today and picked up myself an old mountain bike from teh tip shop for $4 and a new ducar 50cc 2-stroke motor (1 gear centrifigul clutch) off ebay for $60. I got myself an old chain that will fit the sprocket on the crank. Blew the dust off the gasless mig and started some planning. I have 2 ways of approaching this: 1) Rip off the old push bike pedals, rig the motor to the forward crank of the bike then let the original pushbike chain run to the back, giving me 7 gears albeit on a flimsy little bike chain. 2) mount the motor up in the middle and run the chain straight back to another sprocket welded to the rear axle. What do you guys think? Option number 2 is more viable of course, but I'm sort of just after opinion and thoughts, rather than technical advice.