Re: Friction Drive Setup Anyone.?
I ran that GP460 engine with BMP friction drive. I also adapted Staton friction rollers to work with the BMP housing. The 460 was run with 1.25 BMP roller, as well as 1.375" Staton and 1.5" Rubber BMP roller. I installed an ADA S1 expansion pipe with this engine, which quieted it down tremendously and added power. The 1.25" roller really allowed the engine to buzz, but I liked the 1.375" roller better for power and not too buzzy.
Maybe it was my fault, but this engine whittled down the 1.5" rubber roller to less than 1.25" in less than 100 miles. It also cut a groove in the rear tire every inch or so.
This engine does not have low end torque to pull you up hills. It is a screaming demon on the flats, though.
You'll also have to change the 8000rpm clutch springs to something that grabs about 3500rpm.