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Thread: bottom bracket

  1. #1
    J
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    bottom bracket

    I read the treatise on Bottom Bracket installation, which was helpful.

    However, when I try and thread this thing in (Dura-Ace BB-7140) into my road frame, it doesn't want to thread. Seems like it wants to go in, then I can see on the ND side it goes crooked and "pops" loose again. I don't want to mess any threads up on the frame, god forbid, and I'd like to do this without having to crawl back to the shop. The frame is brand new, and the BB threads have been scrubbed with a toothbrush. So I crawl to this section of the forum instead. Suggestions?

  2. #2
    MoJo|oJoM
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    What's the frame? Not Italian is it?

  3. #3
    J
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    No its a KHS Flite 800.

  4. #4
    try explaining the internet to a bum!
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    check to make sure you don't have, as Data mentions, an English threaded BB cup and an Italian threaded frame.

    also, gently, try turning the cup to the left, before turning to the right. keep a little pressure on it. you'll feel a little click when the starter threads engage. at that point, gently start turing to the right. if it doesn't thread easily, make sure you got the right threads (English vs Italian).

  5. #5
    mOjO cHaUfuRr toonces's Avatar
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    Originally posted by carlos
    also, gently, try turning the cup to the left, before turning to the right. keep a little pressure on it. you'll feel a little click when the starter threads engage. at that point, gently start turing to the right.
    That works well with rear derailleurs too.

  6. #6
    try explaining the internet to a bum!
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    get a flash light and see if you can spot any damaged starter threads. also, make sure there isn't any paint preventing the starter threads from engaging.

  7. #7
    J
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    I got it.

    I stopped last night and drank a bunch of Bushmills.

    Then I got up later this afternoon, cleaned everything, did the nail thing in the threads and everything went in ok. Maybe a blob of frame saver was stopping it, everything looked clean otherwise. /shrug.

  8. #8
    try explaining the internet to a bum!
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    ahhh....yeah, being ultra meticulus is always a plus.

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