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Speedo not working

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The Tot
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Joined: 11 Jun 2004
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PostPosted: 17:04 - 13 Dec 2005    Post subject: Speedo not working Reply with quote

Hi guys,

I noticed when i came back from the peak district that my speedo on my bike was NOT working. I checked the old speedo cable and was intact. Consequently i cleaned the ends of the cable and reattached. No use.

I bought a new speedo cable and it still failed to run.

Anybody have any other suggestions as to what maybe wrong?

Cheers

Also, is a working speedo necessary for MOT?
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mchaggis
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Joined: 10 May 2004
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PostPosted: 17:44 - 13 Dec 2005    Post subject: Re: Speedo not working Reply with quote

Titz wrote:
Also, is a working speedo necessary for MOT?


Yes.

Is it driven from the front wheel? I am assuming so. Get the front wheel off the ground, disattach the cable from the bottom and look in it's hole. When spinning the front wheel, you should be able to see the drive 'peg' turning. If that is, it's a problem with the top end.

If it isn't, it's a problem with the speedo drive at the wheel. Take the wheel off and explore. Any problem should be fairly obvious as it is a very simple system (a pair of tongues driven by the front wheel, driving through a pinion and worm gear, which spins the peg, spinning the cable.)
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romperstomper...
Trackday Trickster



Joined: 14 Jan 2005
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PostPosted: 18:17 - 13 Dec 2005    Post subject: Reply with quote

mine often stops working in damp or wet weather then starts again when its dried out !
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RSheale
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Joined: 12 Dec 2005
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PostPosted: 22:53 - 13 Dec 2005    Post subject: Reply with quote

what bike do you have!?


if its from the front wheel the i guess the speedo drive could of had it and you need to replace that,

other than that i have no idea?
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Slinn84
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Joined: 20 Apr 2004
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PostPosted: 02:57 - 14 Dec 2005    Post subject: Reply with quote

another posibility if it turns out not to be the speedo drive is the clock housing

the cable spins round and turns the clock housing gears to move the speedo dial and turn the mileage clocks

this could have seized up
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The Tot
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PostPosted: 09:23 - 14 Dec 2005    Post subject: Reply with quote

My suspicion was the speedo clock housing, cos i couldn't tell whether it rotated freely or not.I know for sure that the front wheel spindle peg rotates cos is shoved the old cable in and walked it.

The speedo clock does seem a tad loose which means that all i can do really is to get a digi replacement.
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Earl Of Easycore Pop Punk Will Never Die!
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mchaggis
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PostPosted: 15:40 - 14 Dec 2005    Post subject: Reply with quote

Take it to pieces and investigate the clocks before you fork out for another though, it's entirely possible that it a screw or two has come loose.
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