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  1. #1
    chips & bier
    Reputation: eric's Avatar
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    Which square BB for RaceFace Turbines?

    Finally found a pair of square taper Turbine cranks, but now I'm wondering what bracket size I need. I'll be running a triple in all likelihood, so I'm thinking 110 mm should do it. Any others still using these cranks?

  2. #2
    All 26.5" all the time!
    Reputation: Zanetti's Avatar
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    107/110/113 depending on the frame they're mounted on.

  3. #3
    mtbr member
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    In my 73mm frames using a 107/108

  4. #4
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    depends ...

    on what chainline you need and on which frame you are putting it on.

    I'm using a 73, 113

    You also should consider that there is 2 standards for square tapered BB. The ISO and the "Shimano" (J.. something). The taper is different. One mix, cranks/BB, will stick further out than another mix

    Check out the RF website and also do a search on MTBR

  5. #5
    Mantis, Paramount, Campy
    Reputation: Shayne's Avatar
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    On the 2 types of Square Taper...

    Shimano is basically the standard. All the aftermarket square taper cranks (eg Race Face, Kooka, Cook Bros, Truvative, etc, etc...) and BB's for that matter use the same "Shimano" taper.

    Campagnolo uses a different taper to their BB spindles. Campagnolo and certain Phil Wood BB's are the only ones available in this configuration.
    *** --- *** --- ***

  6. #6
    chips & bier
    Reputation: eric's Avatar
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    Thanks all

    Based on this I've decided to pop a 110 mm in there first, to try. 107 mm might be okay for the chainline (trying for 47-48 mm, frame should have the clearance), but oddly enough my knees don't like a narrow Q-factor.

  7. #7
    mtbr member
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    Quote Originally Posted by eric
    Based on this I've decided to pop a 110 mm in there first, to try. 107 mm might be okay for the chainline (trying for 47-48 mm, frame should have the clearance), but oddly enough my knees don't like a narrow Q-factor.
    I'm using a 73/113 BB that has an adjustable chainline (real)... shimano ones don't have the adjustable chainline feature (unless you use spacers).
    [SIZE=1][/SIZE]

  8. #8
    customized
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    What frame are you putting the cranks on?

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