How can I rig a chainsaw engine to a bicycle?

[Jake]

I have a Mac 32 cc chainsaw engine, and I'd like to rig it to a bicycle. The sprocket looks like it will fit a bicycle chain, but I'm not sure how to mount it. Because of the way the clutch is, and the shape of the motor itself, it seems like it would have to be mounted behind the rear tire. I'd just like to get it on there and have it geared so it can go 25 mph, but if at all possible, I'd like to have it able to shift gears. The bicycle is a Next Power Climber, and the rear wheel has 7 gears. If it can only shift to three of them, that would be alright. How can I do this?

[flash84]

You're best bet would be to rear mount the engine on a parcel rack. Get a special motorized bike sprocket to fit on the rear left of the tyre. You only need one gear if you have a fairly large sprocket on the tyre. Pedal to start then drop the clutch and away you go! Check out MotoredBikes.com: Motorized Bicycle Forum - Gas & Electric Bikes for more info!