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Thread: Possible to rebuild a RF Sig bb?

  1. #1
    boring the Inbred's Avatar
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    Possible to rebuild a RF Sig bb?

    i remember thinking it was possible to either replace the bearings, or repack, but i don't have the manual anymore, and didn't come across anything on Google.

    anyone know?

  2. #2
    700 Acres Pusher
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    Quote Originally Posted by the Inbred
    i remember thinking it was possible to either replace the bearings, or repack, but i don't have the manual anymore, and didn't come across anything on Google.

    anyone know?

    Just pull it apart; cups, spindle and bearings. Take the bearings down to Purvis Bearings (9729 N I-35) and get yourself some replacement bearings... Then just slap it back together.

    May I suggest SKF or INA. I think that I paid around $40. Seems kinda steep, but then again they LAST.
    BikeMojo.com Foreign Affairs Bureau Chief

  3. #3
    The William Sapphire of Bike Mechanics
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    aLaN....Signature is an ISIS BB......*sad face*


    the Inbred...the only thing you can do to revive the ISIS brackets is to replace the bearings. but it requires a....you guessed it....a special tool.....and a bearing that i haven't been able to find anywhere else (seeing as how the balls are so tiny).

    i keep suggestion that a back up be purchased. when the current one's bearings go out, install the back up and send the spent on to Race Face to have the bearings replaced. then when the back up bracket's bearings die, install the one that was sent for bearing replcement and send the back up for service. it's not cheap but it'll mean you won't have any down time. ever. unless you forget to send them for bearing replacement.
    It’s impossible to rate welding/brazing quality by looking at a finished frame joint, even an unpainted one. Files, sandblasting, and a good paint job can take care of that. Such a joint will look stellar unpainted, but won’t last. Yet people all the time look at frames and say, “Nice welding/brazing…” The point isn’t to make you paranoid, just to stop saying things like, “That’s nice welding/brazing,” when you see a painted/unpainted frame. -- Grant Petersen

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    boring the Inbred's Avatar
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    i noticed little grease ports on the bearings, so i'm gonna try to squirt some grease in and see what happens. but...what kind of nozzle fits into that little port? it's one of the super small ones that i've seen on other things. like, the size of the ball-point pen dot.

  5. #5
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    Quote Originally Posted by car!os
    aLaN....Signature is an ISIS BB......*sad face*
    Hmmm.
    BikeMojo.com Foreign Affairs Bureau Chief

  6. #6
    boring the Inbred's Avatar
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    Quote Originally Posted by the Inbred
    i noticed little grease ports on the bearings, so i'm gonna try to squirt some grease in and see what happens. but...what kind of nozzle fits into that little port? it's one of the super small ones that i've seen on other things. like, the size of the ball-point pen dot.
    discovered the Pedro's gun will. but...how good is Syn Grease?

  7. #7
    The William Sapphire of Bike Mechanics
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    the Inbred...remember that if the bearings are running rough, the grease you add won't repair the pitted metal balls or races....it WILL buy you more time...maybe....
    It’s impossible to rate welding/brazing quality by looking at a finished frame joint, even an unpainted one. Files, sandblasting, and a good paint job can take care of that. Such a joint will look stellar unpainted, but won’t last. Yet people all the time look at frames and say, “Nice welding/brazing…” The point isn’t to make you paranoid, just to stop saying things like, “That’s nice welding/brazing,” when you see a painted/unpainted frame. -- Grant Petersen

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