I would like to limit the top speed of my bike for various reasons. I am running an aftermarket 72v controller. With this controller I can reach a top speed of 29mph but I can't run it below 72v and the gray wire circuit doesnt work with the aftermarket controller. So I am thinking this might work to limit top speed. If I hookup a spdt push button switch with the com connected to the green signal wire from the throttle. Connect the top of a pot to one of the switches poles, the bottom of the pot connected to ground and the wiper connected back to the controllers green throttle wire. I would also connect the other switches pole back to the controllers green throttle wire. This would allow me to turn the pot up or down and vary the signal to control the speed. I could use a fixed resistor as well but I am not sure of the resistance it would need to be in order to control the top speed of the bike. When I move the switch to the other pole it would receive a full 5v throttle signal to the controller since the pot would be by passed.
Their is a pot circuit in the bike's throttle circuit already as discovered by sixpax2k9 but it will not slow the bike enough for me and I have no way to control it. I would leave it in the circuit and turn it up to reduce the resistance. I actually have it up now so it is no longer doing anything to reduce the top speed of the bike. Does this all sound like it would work?
Thanks for all the help I am getting with this project.