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  1. #1
    Mulleticious
    Reputation: BigwheelsRbest's Avatar
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    New question here. Biocentric EBB - why don't you need to loosen the cranks??

    I just don't understand why you don't need to loosen the cranks to rotate the EBB. Surely the crank is exerting a clamping force on the EBB which should inhibit rotation during adjustment?

    (My Biocentric II rotates fine without me loosening the cranks up, but I just don't understand why...!)

    ..apologies if this has been dealt with elsewhere - I couldn't find anything specific

  2. #2
    greedy
    Reputation: have2ride2day's Avatar
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    Shimano or SRAM? My Shimano cranks just need to be tightened enough to preload the BB bearings. I don't think it is enough tension to keep the EBB from moving once its bolts are loosened.
    Addicted to the Classifieds

  3. #3
    Mulleticious
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    Quote Originally Posted by have2ride2day View Post
    Shimano or SRAM? My Shimano cranks just need to be tightened enough to preload the BB bearings. I don't think it is enough tension to keep the EBB from moving once its bolts are loosened.
    SRAM - well, Truvativ Noir singlespeed specific, to be exact.

  4. #4
    mtbr member
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    SRAM cranks do not work how you think they do. The drive side bearing is a floating bearing. It has zero preload on it. You can look and see the gap between the crank and the drive side bearing. Shimano and almost every other crank uses a different system.
    Quote Originally Posted by meltingfeather View Post
    If I told you I saw a unicorn ****ing a leprechaun trail side, you'd probably be suspicious.

  5. #5
    Mulleticious
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    Quote Originally Posted by PeopleForScience View Post
    SRAM cranks do not work how you think they do. The drive side bearing is a floating bearing. It has zero preload on it. You can look and see the gap between the crank and the drive side bearing. Shimano and almost every other crank uses a different system.
    Well, I just looked and you're right. Thank you sir!

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