discovered the friction drive system on my great aunts old bike with rusted up engine and roller. im setting up the BMP kit with the monster scooter engine on a surly bikes 1x1 now. going to see if i enjoy it enough... which it looks like i will. if so id like to eventually mount a belt drive in frame tanaka PF4000. been reading alot but first post. thanks for all the info already! heritage lane is sweeeeet! CB