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BB compatibility

  • 06-05-2011 11:25am
    #1
    omri
    Registered Users, Registered Users 2 Posts: 1,699 ✭✭✭


    Hi,

    Will I be able to install new hollow tech BB onto frame that has internal bb at the moment ?


Comments

  • #2
    cython
    Registered Users, Registered Users 2 Posts: 4,773 ✭✭✭cython


    omri wrote: »
    Hi,

    Will I be able to install new hollow tech BB onto frame that has internal bb at the moment ?

    Not sure if it's possible to give a definite yes or no, as it may vary from frame to frame, but it usually can be done. I have a Trek 1000 that was originally running a square taper BB and now has a Hollowtech II one. If the BB shell has not been faced you may need to get that done first though, as you need the bearing cups to be able to screw in flush against the shell.


  • #3
    CheGuedara
    Registered Users, Registered Users 2 Posts: 2,031 ✭✭✭CheGuedara


    If you mean it's a BB30 (or similar) bottom bracket there's adapters out there to do the job. Enduro do some for sure.

    Edit: reading the q again - if you're talking about a sq taper BB then you should be OK once the shell has been faced (or if it's very tidy from word go). I put a hollowtech chainset onto the OH's bike last year after taking off an old cartridge unit & cranks, no problem.


  • #4
    funkyjebus
    Registered Users, Registered Users 2 Posts: 1,547 ✭✭✭funkyjebus


    I assume the old bb is a square taper cartridge bb? If so yes, once you make sure that they are both the same size (i.e. English or italian thread)


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