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  1. #1
    mtbr member
    Reputation: yules's Avatar
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    Euro BB on a "regular" bike?

    Hi
    Sorry if it's been asked.
    Is it possible to install a euro (eccentric) BB on a regular hardtail?
    If so, who produces them?

    Thanks

  2. #2
    Exclusively Single
    Reputation: long hazy daze's Avatar
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    Heh? Not sure what "euro" has to do with an EBB (eccentric bottom bracket).

    From the title I thought you were referring to Italian or French threading or something of that nature.

    But no, and EBB will not work in a standard BB shell. EBBs use a larger shell that house a rotating mechanism that holds a regular BB so it can be rotated within the shell to adjust chain tension.

    Someone here was working on an EBB that would fit in a standard shell but I think the production costs made it prohibitively expensive to continue.

    You would have to use a tensioner, an eccentric rear hub (White Industries), or find a magic gear ratio for your chain stay length.

    Hope this helps...

  3. #3
    mtbr member
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    Quote Originally Posted by long hazy daze
    Heh? Not sure what "euro" has to do with an EBB (eccentric bottom bracket).

    From the title I thought you were referring to Italian or French threading or something of that nature.

    But no, and EBB will not work in a standard BB shell. EBBs use a larger shell that house a rotating mechanism that holds a regular BB so it can be rotated within the shell to adjust chain tension.

    Someone here was working on an EBB that would fit in a standard shell but I think the production costs made it prohibitively expensive to continue.

    You would have to use a tensioner, an eccentric rear hub (White Industries), or find a magic gear ratio for your chain stay length.

    Hope this helps...
    Well - It was my mistake... I meant eccentric, of course, just though it's the same as a "euro" BB.
    And yes, it helps

  4. #4
    Nightriding rules SuperModerator
    Reputation: crisillo's Avatar
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    trickstuff just showed an eccentric external bearing BB at Eurobike









    Quote Originally Posted by singletrackworld
    The guys from Trickstuff has some mad inventor stuff on show including this clever BB eccentric that works with regular two-piece external cranks and a half-link to give enough movement to turn any normal BB bike into a singlespeed without a Singulator. It even has Phil Wood BB bearings Clever stuff.
    Last edited by crisillo; 09-10-2007 at 02:06 PM.

  5. #5
    "Mr. Britannica"
    Reputation: roadiegonebad's Avatar
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    how much adjustment is there? is it enough?

  6. #6
    Nightriding rules SuperModerator
    Reputation: crisillo's Avatar
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    Quote Originally Posted by roadiegonebad
    how much adjustment is there? is it enough?
    they claim one still needs a half link... but still makes a clean setup

  7. #7
    I always bleed like this.
    Reputation: PoorBehavior's Avatar
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    I don't get that, the hole for the spindle is still in the center of the cup that screws into the frame. The eccentric exterior part can spin all day and it does not appear that it would adjust the center of the spindle. If if moves it sure ain't by much thus I guess the reason for the half link.

  8. #8
    Nouveau Retrogrouch SuperModerator
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    Quote Originally Posted by yules
    Well - It was my mistake... I meant eccentric, of course, just though it's the same as a "euro" BB.
    And yes, it helps
    ummm...no. In the BMX world a Euro BB is the same thing as a "standard" mtb BB.
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  9. #9
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    Quote Originally Posted by PoorBehavior
    I don't get that, the hole for the spindle is still in the center of the cup that screws into the frame. The eccentric exterior part can spin all day and it does not appear that it would adjust the center of the spindle. If if moves it sure ain't by much thus I guess the reason for the half link.
    I'm stuck here as well. Is there any more info on this? This could make a whole world of old frames relevant again (for me at least).

  10. #10
    *Hotter than Hell*
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    Quote Originally Posted by peter6061
    I'm stuck here as well. Is there any more info on this? This could make a whole world of old frames relevant again (for me at least).

    http://www.cyclingnews.com/tech/2007...ts/eurobike074
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