Sprint Gearbox Noise

Discussion in 'Sprint & Trophy' started by Mark haigh, Mar 2, 2021.

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  1. Mark haigh

    Mark haigh New Member

    Mar 2, 2021
    5
    3
    North wales
    Hi guys. Hope you all well. New to this site although iv had two sprints over three years. This one is a 12 plate minter although it's developed a grinding noise from the gearbox by the front sprocket. Iv had the chain off and run it on the center stand. Same noise. Iv held a long shaft screwdriver against the box and listened through it and can hear the grinding inside. Just wondered if there was anyone who'd encountered this and perhaps would be kind enough to pass on their wisdom/experience regards what it is and how to fix it. Thanks
    Mark
     
  2. Ducatitotriumph

    Ducatitotriumph Crème de la Crème
    Subscriber

    Apr 25, 2019
    1,725
    1,000
    Rothwell
    I had this (or very similar) on a fz750 and it was the output shaft bearing breaking up.
    Caused by the chain tension being too tight (done by me repeatedly).
    Hopefully not for you as I had to split the engine to replace.
     
    • Like Like x 1
  3. Mark haigh

    Mark haigh New Member

    Mar 2, 2021
    5
    3
    North wales
    Thanks for your reply. I agree with you. Think I'm looking at an expensive fix. Boo!
    Thanks again.
    Mark
     
  4. Hubaxe

    Hubaxe Good moaning!
    Subscriber

    Mar 25, 2020
    1,173
    500
    Aix Les bains - French Alps
    Common issue on FZ R or X (had 1 FZR and 2 FZX. A lot of work to fix that.
    Probably easier on the Triumph.
     
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