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Any ideas why my speedo doesn't work ??

I have replaced the cable, stripped and cleaned the speedo drive, cleaned the drive on the wheel hub and tried two sets of clocks. Speedo works for about a hundred yards then needle drops to zero. With cable off rotating front wheel, speedo drive appears to rotate correctly. With electric drill attached to cable, speedo shows up to 60mph. I'm running out of ideas, any suggestions welcome. Mick

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  • Motorcycles Master
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Hi, James baffling isn't it for such a simple mechanical apparatus lets break it down:
1. Speedo works validated by the drill.
2. Cable works validated by the fact it's new.
3. Speedometer drive is all that's left needs to be validated by disconnecting the speedometer cable from the speedometer, getting the front wheel off the ground and spinning it to see if the new cable is turning in the housing, my guess is the speedometer drive unit tab is either broken or not properly indexed.
Good luck and have a wonderful day.
xlch@mail.com

Posted on May 15, 2017

Testimonial: "Thanks Gregg, I'll give it another go during the week, my patience is running a little low at the moment. Good job it's raining here in the UK anyway!"

  • Gregg Mahin
    Gregg Mahin May 15, 2017

    I used to live on the lock in Marlow, Buckinghamshire it always rained

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Posted on Jan 02, 2017

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