Problem with the speedo

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Problem with the speedo

Post  Lucky Luke on Tue Jul 14 2015, 18:25

Hey everyone,

Just wondering whether anyone can help.

A few days ago my speedo and milometer stopped working on my Thundercat. Thinking it was the speedo cable I bought a new one and replaced it myself this morning.

However this seems to have only fixed the milometer. The speedo needle is still firmly rooted to the 0mph point.

Does anyone have any tips or ideas ? ? ?

Much appreciated
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Re: Problem with the speedo

Post  The White One on Tue Jul 14 2015, 18:45

On the left had fork inbetween the fork and wheel your cable goes into a speedo drive. In this there is a plastic cog that spins when the wheel turns that in turn spins the cable. Sometimes these break and the grooves get worn. I would look at that first to make sure it is ok. The speedo is not electrical so should be either the cable or the speedo drive that is the problem. I have a rebuilt and resprayed one that is 100% if you find yours is shot.
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Re: Problem with the speedo

Post  SteveCat on Tue Jul 14 2015, 23:28

If the miles are clocking up and not the speed, umm sounds like the needle has come loose.

I went through a few pick up units though.
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Re: Problem with the speedo

Post  Rosco on Thu Jul 16 2015, 09:40

Pretty sure the speedo cable is the input for both odometer and speedo needle.

Sounds to me like the issue is within the clocks somewhere if one is working and the other ain't.
Could the needle have fallen off the thingy-bob than makes it move?

Good luck.
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Re: Problem with the speedo

Post  Wooster on Thu Jul 16 2015, 19:01

Sounds like that to me also.

Just make sure you're doing 0mph when you put it back on the spindle, or it might give out an incorrect reading. Wink
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