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  1. #1
    mtbr member
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    Does Sunday frame need a dedicated BB?

    reading Sunday frame specs I noticed it requires a 83mm BB shell.
    But I could not find any on the market of that size!
    Is that a typo 73 instead of 83 or is it correct?
    Max

  2. #2
    M070R-M0U7H FR3NCHI3
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    For optimum chainline you would need a 83mm X 128mm BB. But you can also use a 85x133 FSA with the BB spacers and that would also work.

  3. #3
    Industry Loudmouth
    Reputation: ska todd's Avatar
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    Quote Originally Posted by maxturku
    reading Sunday frame specs I noticed it requires a 83mm BB shell.
    But I could not find any on the market of that size!
    Is that a typo 73 instead of 83 or is it correct?
    The BB is indeed an 83mm. This makes for perfect chainline w/ 150mm hubs, clearance for bike tires, and better positioning for drops and corners w/o the weight of a 165/100 set-up.

    FSA & Truvativ (Race Face ???) will be making 83x128mm BBs. Shimano is introducing Saint cranks in the 83mm BB size also.

    -ska todd

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