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  1. #1
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    crosstreaded bottom bracket

    Hi I am new to this forum so please excuse any mistakes I have just bought a second hand road bike and basicaly the two threaded cups that go on the crank axle that hold the bearings in (sorry dont know the proper name of these) have been screwed in crossthreaded and damaged the bottom bracket of the bike has anybody experienced this if so is there a way to put it right thanks for any help
    web1275

  2. #2
    Career Cyclist threadend's Avatar
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    Feb 2002
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    You may be able to chase the threads with a tap and save the threads. Check with a local LBS.
    2003 Iceman Challenge - 2:34:55 - 897 / 2,000*
    2002 Iceman Challenge - 2:39:23 - 1093 / 2,186
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  3. #3
    Life is good RonH's Avatar
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    Jan 2001
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    Between Crystal River and Hernando, Florida, 6 miles west of the Withlacoochee Trail
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    I've had several since 1999 but have settled on my beloved 2001 Litespeed Tuscany and my latest, a 2013 Cannondale CAAD 10.
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    Welcome to BikeForums.

    Sorry to hear of your troubles. I think the best thing to do is take the bike to your LBS and see it the bottom bracket can be salvaged.
    My bikes: 2001 Litespeed Tuscany---
    2013 Cannondale CAAD 10 2 "Racing Edition"--The bike shop owner said it's toast after the car-bike accident. R.I.P.
    * * 2014 or 2015 CAAD 10 3 coming soon. Decision time. * *

    Life is like a 10-speed bicycle. Most of us have gears we never use. ~ Charles Schultz

  4. #4
    Senior Member
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    Probably not repairable.

    The right side cup has a left handed thread. There is a chance that, if the cup wasn't forced all of the way in, that a shop could take the proper tap and chase down the threads.

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