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  • 29-08-2014 1:44pm
    #1
    rollingscone
    Registered Users Posts: 3,477 ✭✭✭


    So I reinstated my single speed beater with a new back wheel last night as the old one had completely lost it's true and was rougher than a lost weekend in Bundoran.

    This morning I used it for my short commute to the new job and heard an alarming grinding.

    The chain ring is oscillating on the bb and coming into contact with the chain stay once s revolution.

    Is this a job for a new bb or a deeper issue?


Comments

  • #2
    Alek
    Registered Users Posts: 4,520 ✭✭✭Alek


    Can you feel any movement in the chainset when trying by hand (other than rotational of course) ?

    Does the chainring itself look straight?

    What BB does your bike take? (I may have a few old spares and live near ;-) )


  • #3
    Ole Rodrigo
    Closed Accounts Posts: 3,013 ✭✭✭Ole Rodrigo


    Service the BB, some of the bearings may have come loose from their sockets.

    That said, it'd want to be in royal rag order for the chaining to glance off the chain stays. Make sure the rear wheel is aligned properly after the refitting. You can do this by tightening the rear axel bolts gradually and with equal pressure.

    Both of those together should fix it.


  • #4
    rollingscone
    Registered Users Posts: 3,477 ✭✭✭rollingscone


    Alek wrote: »
    Can you feel any movement in the chainset when trying by hand (other than rotational of course) ?

    Does the chainring itself look straight?

    What BB does your bike take? (I may have a few old spares and live near ;-) )

    It did when I set off this morning. Have to measure the bb it's an old square taper. Actually the original from the bike . A Raleigh Outland.


  • #5
    Alek
    Registered Users Posts: 4,520 ✭✭✭Alek


    Let me know how bad and how wide it is.


  • #6
    rollingscone
    Registered Users Posts: 3,477 ✭✭✭rollingscone


    Alek wrote: »
    Let me know how bad and how wide it is.

    Will measure iy when I get home. You around the Rat mines tonight?


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  • #7
    Alek
    Registered Users Posts: 4,520 ✭✭✭Alek


    PM sent


  • #8
    rollingscone
    Registered Users Posts: 3,477 ✭✭✭rollingscone


    Alek wrote: »
    PM sent

    Thanks man. I'm not sure how naked pictures of yourself really help but I appreciate them anyway.


  • #9
    Alek
    Registered Users Posts: 4,520 ✭✭✭Alek


    rollingscone wrote: »
    Will measure iy when I get home.

    No worries, it will be long enough.


    :D:P


  • #10
    rollingscone
    Registered Users Posts: 3,477 ✭✭✭rollingscone


    Next question. How to remove this...

    20140830_165227.jpg

    20140830_165217.jpg


  • #11
    Alek
    Registered Users Posts: 4,520 ✭✭✭Alek


    Big adjustable wrench. Been there, done that. WD40 it half an hour before, too.


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  • #12
    crosstownk
    Registered Users Posts: 12,863 ✭✭✭✭crosstownk


    Make sure the adjustable wrench fits snug or else you'll take lumps out of it if the wrench slips.

    Then, when your BB is sorted, head to Woodies and get a bottle of Pathclear for the weeds :D
    Untitled Image




  • #13
    rollingscone
    Registered Users Posts: 3,477 ✭✭✭rollingscone


    So had a bike maintenance play date with Alek tonight where he kindly donated an old BB and we discovered that the only reason the drive train ever worked at all was because of its disintegrating bottom bracket.

    To be continued.


  • #14
    Alek
    Registered Users Posts: 4,520 ✭✭✭Alek


    I honestly think that we can install this old BB further to the right and it will be all fine. Just get some spacers (3-5mm?) and come back :) There is plenty of thread left on the left cup for adjustment like this.


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