Thanks Tony that's the simple throttle I'm looking for & I'm thinking I can modify it to loo a hundred years older at the price I can screw up several in the process. My single speed reduction set up requires a freewheel to allow easy pedaling. Really nothing about this project is practical in this century except the electric power, but then the 1915 HD board bikes weren't practical for everyday riding even in 1915! My point in doing a replica is just in doing it. I've plenty of daily riders already, but after the novelty wears off I'll probably change the bike over to disc brakes and upgrade the controls as well. A couple of years from now who knows what will be available. Also regen braking is a great suggestion & with caution gives the feel of riding a 4 cycle bike with compression braking. Your caution is noted with using brake regen and a fully charged lithium pack. I might just try it without the freewheel, easy swap out to test. Rick C.