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Thread: Creaking BB

  1. #1
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    Creaking BB

    There is a serious creak on my bike, and I think it is coming from the BB. The noise occurs while under heavy power, and while standing to ride. I was out in the rain yesterday, and the noise stopped, but another 30km down the road it was coming back again. Today it is fully there again making a lot of noise.

    Any ideas on what it may be, and how to fix it?
    ----------
    2003 Raceline Performance
    Shimano Sora

    Thanks.
    Sam

    a few b0b sh0rt 0f a p0p tart

    "What goes up, must come down, and it must come down at least 5x as fast as it went up"

  2. #2
    The Flying Scot chewa's Avatar
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    If the rain stopped it, most likely is the cups of the BB where they thread into the BB shell.

    I've cured this by wrapping the threads in a PTFE tape. Creaks gone.
    plus je vois les hommes, plus j'admire les chiens

    1985 Custom built 531c Audax/fast tourer.
    1964 Flying Scot Continental
    1995 Cinelli Supercorsa
    1980s Holdsworth Mistral fixed
    2005 Dahon Speed 6 (folder)
    (YES I LIKE STEEL)
    2008 Viking Saratoga tandem
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  3. #3
    0^0 fubar5's Avatar
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    Check your crank arms, and try tape as Chewa suggested.
    Booyah!!

  4. #4
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    Originally posted by chewa
    If the rain stopped it, most likely is the cups of the BB where they thread into the BB shell.

    I've cured this by wrapping the threads in a PTFE tape. Creaks gone.
    How do I get to the cups? I don't know a lot about the BB.........
    Sam

    a few b0b sh0rt 0f a p0p tart

    "What goes up, must come down, and it must come down at least 5x as fast as it went up"

  5. #5
    The Red Lantern Rev.Chuck's Avatar
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    You need to pull the cranks, requires a special tool, and remove the BB cups with one or more special tools. Might be time for a trip to the bike shop.
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    I am in the woods and I have gone crazy.

  6. #6
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    There are many sources for noise. See some at Drive Train Creaking

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