Thanks Again,
I will go with the friction drive method,It will be an easy install and i,ll be
able to give it a whirl before winter really sets in.
Being new to this i need to learn A LOT more before i attempt chain drive.
Thanks again for your help!
Good idea to start the learning curve w/friction drive. I started with friction, then single chain drive, now shift kit w/8 gears. It's a natural progression.
When you do fab your friction drive, don't forget to create the gravity clutch. Basically, your engine is mounted on a platform that hinges/pivots from the front or center. Springs or bungee cords or lever action pushes the friction roller onto the tire. Another lever within the rider's reach activates the back lever, which raises or lowers the engine's friction roller away from or onto the tire's tread.
This mechanism, is called a gravity clutch. Without it, your engine will die at every stop. If your route includes heavy city traffic, you will not be able to use the engine in stop-and-go traffic. You COULD try to incorporate the OEM clutch along with the gravity clutch. However, if this clutch burns out, then you'll have to remove the mechanism from your design, then re-engineer the friction spindle to run without it.
Maybe it'd be best simply to run without the OEM clutch, and design your gravity clutch. Here's a nice version of a gravity clutch:
http://motorbicycling.com/f36/another-friction-drive-last-one-i-31318.html
Good luck.