EVG throttle replacement

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BrianJ   1 µW

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EVG throttle replacement

Post by BrianJ » Oct 11 2018 3:21pm

Hello forum,

I've seen a lot of topics on these bikes, most are very dated though so im curious if anyone knows an aftermarket throttle for a 24v 1999 ebike.

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amberwolf   100 GW

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Re: EVG throttle replacement

Post by amberwolf » Oct 11 2018 3:39pm

First, are you certain the throttle is the cause of the problem you're having? (whatever problem that is)

Next, is it a potentiometer throttle or a hall throttle?

A multimeter can be used to tell which you have. Disconect throttle from bike wiring, then set meter on ohms, black to one of the three throttle wires, red to one of the other two. turn the throttle grip or lever from min to max, and if the meter reading changes smoothly from low to high or high to low values, i'ts a potentiometer. If not, move the red wire to the last of the three wires, and try again. If it still doesn't change, then eitehr there's something wrong with the wiring or pot, or it is a hall type throttle.

If you're still not sure, you can open it up and see if there's a tiny black box with three wires, or if there's a big metal cylinder with three wires and a knob/post sticking out of one end. The former is a hall, the latter is a pot.

Both types exist and are easy to find in grip type (and sometimes in thumb type), but you'll have to check which one it is, and note where the wiring connects (because nothing except the original throttle will just plug in and go).

If there are other things on the throttle unit like switches or indicator lights, you may need to leave the original throttle on the bars to keep those, moved over to leave room for the new throttle.

BrianJ   1 µW

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Re: EVG throttle replacement

Post by BrianJ » Oct 11 2018 3:46pm

Well it broke and fell out of socket today so yes its most certainly the throttle, i can manually twost the mechanism insode to throttle. I dont know what kind it is, its the original that came with the evg 24v in 1999.

BrianJ   1 µW

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Re: EVG throttle replacement

Post by BrianJ » Oct 11 2018 3:47pm

My o and i are too close on samsung keyboard :-/

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amberwolf   100 GW

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Re: EVG throttle replacement

Post by amberwolf » Oct 11 2018 4:31pm

If the plastics broke, you might be able to repair them, but it's probably easier to replace it.

Try the test noted above, or open it up, to find out whcih kind of throttle it is. Or see if any of the old EVG threads say.

BrianJ   1 µW

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Re: EVG throttle replacement

Post by BrianJ » Oct 12 2018 3:04am

Thank you

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