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  1. #1
    Senior Member bktourer1's Avatar
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    Bottom Bracket Replacement

    I have a 13 y/o Diamondback hyrbrid that the BB separated on me my almost near the house.
    I was able to get the chain on the smallest ring and get home.
    I would like to replace this as I like the bike but don't know that BB to buy or what special tools I would need. Be gentle with me. I don't want to put a lot of money in this bike and
    its the only one I have. All assistance appreciated

    Thanks

    Ed

  2. #2
    Senior Member
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    identify what type of crank/bb system you have. start here http://www.parktool.com/blog/repair-help

  3. #3
    cab horn
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    Quote Originally Posted by bktourer1 View Post
    I have a 13 y/o Diamondback hyrbrid that the BB separated on me my almost near the house.
    I was able to get the chain on the smallest ring and get home.
    I would like to replace this as I like the bike but don't know that BB to buy or what special tools I would need. Be gentle with me. I don't want to put a lot of money in this bike and
    its the only one I have. All assistance appreciated

    Thanks

    Ed
    There's two places where you'll be spending money on this repair.

    1) Labour to remove and install a bottom bracket/crank. A shop will charge you anywhere from $20-$30. If there is a bike coop, that lends out tool and expertise expect this to be maybe $10.
    2) Parts cost, is going to be approximately $15-$30 i'm guessing it'll be a standard square taper bottom bracket.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  4. #4
    Can'tre Member 3alarmer's Avatar
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    It's difficult for me to understand exactly what you mean by
    " BB separated on me" as this could refer to a number of
    different things coming apart at a number of different junctions.

    Some of these can lead to damage either to the crank arms
    or the cups/bearings or even the BB threading which can
    make the job more $ intensive. If there is a bicycle coop
    near you, I'd go there first. At the one here in Sacramento
    we basically diagnose this stuff for free (do it yourself repair
    costs some money).

    If you have the equipment to post some pictures of exactly
    where and how it separated, we could possibly give you
    a better answer. Or possibly not.

    Mike Larmer

  5. #5
    Senior Member bktourer1's Avatar
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    I got my bike back to day and it only cost me $45. I was only charged for the sealed Shimano BB.
    I had asked about the old one and was told the internal cups were full of individual ball bearing,
    and a cup inside that held them in place broke. Old style tools were needed to remove the cups.
    I was told I was lucky as the inside threads were not stripped and everything came out clean.
    At this point the only thing that matters now is that I’m back on the road, the LBS gave me a great deal, and this riders on this forum are great for providing assistance when its needed

    Thanks again

    Ed

  6. #6
    Bianchi Goddess Bianchigirll's Avatar
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    congrats on a suscessful repair. for the novice rider things like this are left to the pros. glad things worked out and you got a great price.
    Bianchis '87 Sport SX, '90 Proto (2), '91 Boarala 'cross, '93 Project 3, '88 Trofeo, '86 Volpe, '89 Axis, '79 Mixte SOLD, '99 Mega Pro XL Ti, '97 Ti Megatube, , '90 something Vento 603,

    Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '86 Bertoni (sold), '09 Motobecane SS, '98 Hetchins M.O., '09 K2 Mainframe, '89 Trek 2000, '?? Jane Doe (still on the drawing board), '90ish Haro Escape

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