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  1. #1
    Junior Member
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    Feb 2009
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    Bottom bracket doesn't want to insert.

    I just bought a new Leader track frame, and I'm trying to put in the BB, but neither side wants to go in. It wants to cross-thread. Everything is standard English threading and new (BC 1.37X24T, 68X111), and I am turning them the correct way. Neither side will reach a full turn before stopping, and I have tried about a thousand times. I haven't forced anything, and I'm only using my hands. It's a mediocre Sunrace BB, but I'm in Mexico, and it's the only one I could find that would give me the chainline I want. Furthermore, that shouldn't stop it from entering the frame. Any advice out there? Am I doing something wrong, or is there another measurement on the BB that could be causing me a problem. I have put in a number of BBs, and I have ruined one, so I know not to force anything. It's frustrating to experience this with all new merchandise.

  2. #2
    Senior Member
    Join Date
    May 2010
    Location
    Madison, WI
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    Have you tried flipping it around?

    I've come across sealed bearing BBs with the removable cup on the opposite side from 'normal' BBs before.

  3. #3
    Junior Member
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    Feb 2009
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    Problem solved. Even though it was new, I cleaned the threads with a knife, and then it decided to go in nice and smoothly.

  4. #4
    Senior Member
    Join Date
    Aug 2007
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    Your first problem was buying a Leader.

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