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Goneaway4836
Goneaway4836 Posts: 25
edited February 2021 in MTB workshop & tech
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Comments

  • nicklouse
    nicklouse Posts: 50,673
    could be loose pedals/cranks or a dead BB.
    check them out and see.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • Goneaway4836
    Goneaway4836 Posts: 25
    edited February 2021
    .
  • Tank-slapper
    Tank-slapper Posts: 968
    Does it clunk at the same point in each pedal revolution?
  • Goneaway4836
    Goneaway4836 Posts: 25
    edited February 2021
    .
  • nicklouse
    nicklouse Posts: 50,673
    so you say the crankset end is ok. so have a look at the wheel end.

    chain/cassette/freebody/dérailleur
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • Tank-slapper
    Tank-slapper Posts: 968
    If the clunking occurs at the same points during each pedal revolution, the problem must be at the crank end. If it clunking 'moves', it might be in the freewheel.
  • Goneaway4836
    Goneaway4836 Posts: 25
    edited February 2021
    .
  • hairy_boy
    hairy_boy Posts: 345
    I had a 'strange vibrationy sensation' when pedalling in some gears on my new Giant Terrago. Took it back to my LBS and they located it to the cassette ?

    Everything was Shimano apart from the cassette which was Sram - this surprised my LBS but they said it shouldn't have caused a problem but swapped it for a Shimano cassette and this sorted the problem.

    My problem was much more a vibration sensation in some gear combinations rather than a clunking as you suggest.

    Can you take it back to a LBS to get them to look it over and ride it round the carpark to check it out ?

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