This was my 3rd build . Mt first kitmotor. Was stolen in New Orleans last month. Still mourn her.
My 2nd build was a vert briggs friction drive. Was fast but very top heavy and hard to mount/dismount gracefully.
My first build was a friction drive weedeater and its gearbox,sidewinder style.The kids wore out two 20" bicycles with that thing and I now have it on a Sun cruiser.