Is this terminal?

gbsahne001
gbsahne001 Posts: 1,974
edited August 2011 in The workshop
Bottom bracket; grasping each pedal and pushing them the BB is going clonk clonk.

Is it time for a new BB or do the end caps just need tightening?
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Comments

  • nicklouse
    nicklouse Posts: 50,673
    most likely new BB.

    but depending on the set up something may just need tightening.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • gbsahne001
    gbsahne001 Posts: 1,974
    one of these

    o0uxcn.jpg
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  • nicklouse
    nicklouse Posts: 50,673
    terminal.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • gilesjuk
    gilesjuk Posts: 340
    Take the chain off and spin the cranks by hand slowly. You'll feel any grittiness in the bearings. If they feel more like they are grinding than turning then it's time to change the bottom bracket.

    If there's excessive play then also it's time to change it.
  • gbsahne001
    gbsahne001 Posts: 1,974
    that'll bring me up to £350 this month on bike bits (frame, fork, bar tape, cables, disc pads etc), who said it was cheaper than a car?

    Oh well, I suppose 15k miles from a BB isn't bad.
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