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  1. #1
    Framebuilder
    Reputation: Live Wire's Avatar
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    Niner Biocentric II EBB?

    Looks like I'll be doing a tandem this summer so I've been looking at whats current with EBBs. The improved Niner EBB looks interesting.
    Has anyone used one on a frame build?
    From what I can tell, it needs a 55mm id bbshell and I have a couple, but they are (I think) 62mm wide. I cant find any specs on the Niner shell width....anyone happen to know that?

  2. #2
    WIGGLER
    Reputation: todwil's Avatar
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    I used the Niner shells in my 36ers and I believe they are 68mm wide but I will check
    When I get home tonite.
    PAYASO 36er.....Live the Circus

  3. #3
    Framebuilder
    Reputation: Live Wire's Avatar
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    Thats what I thought too, they look like a standard width in the pics.
    Thanks for checking!

  4. #4
    mtbr member
    Reputation: jeffreyjhsu's Avatar
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    Off topic, but where can I get a 36r or 32r?

  5. #5
    WIGGLER
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    Walt has made a half dozen or so check his blog.
    PAYASO 36er.....Live the Circus

  6. #6
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    Reputation: whydomylegshurt?'s Avatar
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    The Niner EBB shell is 68mm wide, the face plate of the EBB is 2.5mm providing a 73mm BB. If you use the original set screw EBB it sits flush with the shell at 68mm. They happen to be on sale right now as well EBB Shell - 4130 Steel

  7. #7
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    Reputation: Clockwork Bikes's Avatar
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    I really like how they work and recommend them. You will need a big old reamer though.







    -Joel
    NOTHING WORKS LIKE CLOCKWORK

    www.clockworkbikes.com

  8. #8
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    The BEER EBB eccentric is very similar in design but a little smaller and works with 46mm bottom bracket shells (i.e. the same as PF30). The nice thing is that you can use the same reamer for the EBB that you would use for a normal PF30 shell.
    Eccentric Shop BEER Components

    Problem solvers also has one.
    Problem Solvers

    I have not yet tried the EBBs so I can't say how well they work but reports from others are good. I decided to to give it a try on my next frame. My personal EBB frame will be ready in a few weeks.
    Mark Farnsworth, Raleigh, NC
    http://farnsworthbikes.com

  9. #9
    Framebuilder
    Reputation: Live Wire's Avatar
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    I had looked for the shells on the Niner site but didn't find them...nice to know they are available.
    Reaming the shell is a concern too. I've had good luck in the past using the Bushnell EBB and brazing the shell with silver. No real distortion and the insert turned smoothly, but it's an expensive way to build!
    Great info, thanks guys.

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