esc for e-bike ?

[speedy]

Hi !

i'd like to build an elektric bike from an old mountainbike and pu t a n turnegy outrunner on it :) But i don't know wre to buy a esc that can be operated from a throttle handle like a gaspowered mc??

[Chadworkz]

Well, you could use the throttle trigger from an old transmitter and modify it into a lever, then mount the un-cased guts of the transmitter somewhere on the bike and run longer wires to the throttle trigger through the frame or alongside (or inside) the brake cable.

Edit: Or, if you really want a twist-throttle like on a motorcycle, you can still use the throttle trigger from a transmitter, but mount it in such a way that twisting the throttle grip pulls the trigger.

[sabongi]

take a look at these guys http://www.goldenmotor.com/

[Arct1k]

check out holmeshobbies.com this is his other area of specialty

[Overdriven]

Originally Posted by Chadworkz

Well, you could use the throttle trigger from an old transmitter and modify it into a lever, then mount the un-cased guts of the transmitter somewhere on the bike and run longer wires to the throttle trigger through the frame or alongside (or inside) the brake cable.

Edit: Or, if you really want a twist-throttle like on a motorcycle, you can still use the throttle trigger from a transmitter, but mount it in such a way that twisting the throttle grip pulls the trigger.

If you're going to use an R/C based esc, an easier way is to use a servo tester. The servo tester has a potentiometer on it that you turn to adjust the position of a "servo", but it can be used to drive an esc the same way. A lever can be attached to it, or with some inginuity it could be mated to a twist grip. don't know the cost of one, but if you have an old Tx around that might be a cheaper way to go.

[BrianG]

I personally would use a couple of 555 timers (or a single 556 timer) and make my own servo tester. One thing to think about for whatever you use: design it such that if the "wiper arm" of the pot opens up (gets worn), the ESC should go to neutral, not WOT. Pots do wear out and it would suck to slam WOT into a stationary object...