Removing a stuck BB fixed cup?

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  • Am I right in thinking that a fixed cup in an Italian BB shell (70mm width) should unscrew counter clockwise?

    If that is correct anyone got any ideas on how to release one that seems to be well and truly stuck?
    I've tried the usual soaking in penetrating oil but the fucker still won't budge!

  • vice up the fixed cup carefully, and twist the frame.

  • both cups on an italian BB are clockwise to tighten, anticlcockwise to loosen.

    If you have access to a vice, vice the BB tool (facing up). then drop the cup down on to the tool. Use the whole frame as a lever, it'll come out.

    check you haven't got any lockrings going on first though.

  • both cups on an italian BB are clockwise to tighten, anticlcockwise to loosen.

    If you have access to a vice, vice the BB tool (facing up). then drop the cup down on to the tool. Use the whole frame as a lever, it'll come out.

    check you haven't got any lockrings going on first though.

    Definitely no lockring just the fixed cup screwed in super tight! Thanks for the advice. I'll pop down to my LBS and see if I can borrow their vice.

  • sorry about awakening the dead but I UTFS and found this.

    is it possible to damage the threads with the vice trick? mine's stuck on the left side but it works...I just wanted to change it for a new/better one but rather not if damaging the frame is a possibility...

    thanks

  • sorry about awakening the dead but I UTFS and found this.

    is it possible to damage the threads with the vice trick? mine's stuck on the left side but it works...I just wanted to change it for a new/better one but rather not if damaging the frame is a possibility...

    thanks

    No, using a vice is the correct installation procedure and therefore the correct removal procedure.

  • even when stuck? cool, thanks!

  • Using the vice is NOT the correct instillation technique, but should help in removing it.

    It it's really stuck it might be rusted in which case you can try Plus-Gas, soak it overnight and it will help.

    I had the same problem on an old Raleigh frame and ended up (after 3 bike shops and exhausting all my knowledge) going to a metal workshop. They welded a bar onto the BB cup and used that to lever the cup out.

  • hmmm, ok! I'll try the vice as it has already been soaked

    thanks!

  • Just tease it and make sure you are turning the right way. Not try to patronise but it's easily done.

  • retro di corsa had a good method he used to remove mine. pm him.

  • i find that soaking in ammonia overnight will help. Pour in from the opposite side and rest frame so that it soaks into the threads. ONly really works on steel/aluminium as opposed to steel/steel. So check this first. Oh and dont even think about doing it inside, it fucking stinks!

  • i find keeping the spindle in and using washers + crank arm bolt to pin the BB tool tight to the BB helps

  • I'm having this same problem, which is quite annoying considering I had it out two weeks ago!

    Anyway, I there a way to tell whether it's english/italian etc... & the direction? I can't remember which way it turned before & now I can't get it to turn out in either direction.

    Once I've determined direction does anyone in West London (preferably Ealing as I'll be walking) have the special spanner or a vice that I could use please?

  • English BB shells are 68mm Italian 70mm.
    If its Italian then counter-clockwise to loosen if English then clockwise.

  • English it is then - thanks.

    Any westies up for lending me the tool/vice? I've tried the sheldon brown bolt & washer but couldn't get it to work...

  • check this thread

    http://www.lfgss.com/thread43955.html

    I just removed a stuck bb cup this afternoon using an M16 bolt 100mm long with two nuts.

    I paid £1.07 for the bolt and nuts.

  • If all else fails, to remove the bb cup destructively but save the frame: Weld a long iron bar directly on to the face of the cup. The heat from the welding helps but mainly it is the leverage of the bar which never fails to get the cup out.

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Removing a stuck BB fixed cup?

Posted by Avatar for motman @motman

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