Best BB design for EBB? Chinese Carbon build...- Mtbr.com
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  1. #1
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    Best BB design for EBB? Chinese Carbon build...

    First post, longtime lurker....

    I'm considering building a Chinese carbon SS and the only option is an EBB as they do not offer sliding dropouts (and I have no interest in a tensioner). The frames can be built with a few different BB options:
    BB92
    BB30
    PF30
    BSA

    I am a total noob to EBBs so I thought I seek the forum expertise for some guidance.

    Which would be the best for running SS?

    Thanks for your help

  2. #2
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    Not an easy answer. Most bikes that use EBBs are designed that way from the get go and use a couple of standard options. What you are looking to do is get a standard frame and add and EBB, which is always a bit of a gamble. There are a couple of options for a standard BSA threaded BB:

    Trick Stuff Exzentriker: looks like a quality unit, but expensive.

    Phil Wood Philcentric: Also looks nice, and expensive.

    There are also a couple of options for PF30 and BB30 bottom brackets from Problem Solvers and others I thnk, and Niner Bikes makes one for PF30. The problem is all of those rely on compressing the 2 halves together, and they will not work on most carbon frames, unless they have a metal insert in the BB shell.

    The only one I've used is the Niner, but on a steel frame, and it's been great.

  3. #3
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    A friend of mine tossed an EBB in a Chinese carbon frame. Not all carbon frames are up to the stresses that an EBB will put on them (clamping forces).

    His cracked. H never even got to ride it. Now he's riding a Krampus.
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  4. #4
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    Quote Originally Posted by teamdicky View Post
    A friend of mine tossed an EBB in a Chinese carbon frame. Not all carbon frames are up to the stresses that an EBB will put on them (clamping forces).

    His cracked. H never even got to ride it. Now he's riding a Krampus.
    That sucks! But doesn't the carbon Niner RDO One use an EBB? Are any of the BB types above more well suited to EBB than others?

  5. #5
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    Quote Originally Posted by MidnightFattie View Post
    That sucks! But doesn't the carbon Niner RDO One use an EBB? Are any of the BB types above more well suited to EBB than others?
    The current RDO is designed to handle the stresses of an EBB, but if you can remember, l Niner was emphatic about NOT using an EBB with the original RDO frame. It was. It made to stand up to the clamping forces of an EBB.

    Some people toss EBBs into carbon frames, and it works just fine. I wouldn't do it with my money tho.
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  6. #6
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    I got one of those chinese carbon frames with a bb30. It had a metal (aluminum?) sleeve for the bottom bracket. Not carbon. Am currently using a Wheels Manufacturing EBB for shimano bb30. No problems yet but it's not my primary bike. YMMV.

    Wheels Mfg - Eccentric Bottom Brackets
    Best BB design for EBB? Chinese Carbon build...-img_20160922_182819.jpg
    Bikes, lots'o bikes

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