I looked at that and I really like the idea but it would double the cost of this build. Don't think it would qualify as a moped here in NC either.
So maybe I'll try it on my next bike. ;-}
Regs! Bill KU4QB
i am thinking about a rear shift kit for the left hand sprocket usimg 2 or 3 gears to think abot getting speed. 50 tooth 44 tooth 36 tooth maybee even a 28 tooth, a 4 sprocket desing using a rear derailer i have been drinking but the concept works.