Good score on the electric bike, Ron. No probs at all showing it here.
It'll be an interesting build for all, if you install gas engine to run with electric motor!
I have one of those clutches laying around that I could scrounge from.
For belt tensioning, I'll be adjusting my rear support rods to stretch the belt. Adjustment will be locked in solid, because I'm using 18" of 3/8" allthread as the support struts. This SHOULD work; if not, a simple tensioner can be bolted on, near the drive pulley.
Yes, I'm in Hawaii. Days are longer, night classes are out for the summer. This'll give me more time after work for my bike project.