Hey Gang!...My name's Tigmaster....I have a new build,and I'm gathering parts...I turned a roller for a friction drive out of aluminum billet...It's just under 2"OD x 2.375"w,with a 5/8".I.D. I've gotta get a clutch for the 5/8" engine shaft,I havent made up My mind whether to go with chain or belt primary...I havent even decided if it's gonna be F/D,or maybe a belt final drive like on the Whizzers ...I really like the F/D build of WayneZ...and so far I've only got just under two bill$ in the build....($99.00 Schwinn from Target and $87.00 for the engine)...Tigmaster....