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  1. #1
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    Is my bottom bracket suppose to stick out like this? First time installing..

    I am attempting to put together my first track bike. I bought a Spin Doctor tool kit today for $50 from Performance with some grease. I greased up the threads and loaded in the cartridge on the drive side first (reverse threading) and then I put the cap in the left ride (clockwise threading) and tightened both end as much as possible with the bb socket. Is it suppose to stick out like this or do I have the wrong size cartridge? I am afraid to tighten it any more because I already gave it a good tightening. If it is the wrong size shell, is it a problem? Edit: I removed it and tried to rethread it. The BB is 68 and my frame is 68. I noticed that I can only have 1 side flush with the frame. If I tighten the drive side then the cap sticks out. If I tighten in the cap then the drive side sticks out. Thanks


    Last edited by awsnaps; 08-07-08 at 09:05 PM.

  2. #2
    Klaatu barada nikto cascade168's Avatar
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    Ya, you are good. With those type BB's, you tighten the drive side damn tight (to torque spec, of course ;-)))) ) and then the NDS tightens to where it will. It's real purpose is just to center the BB in the frame's BB tube. Just grease it up and make it snug and you are good to go. Don't worry about it sticking out.
    "Work is the curse of the drinking class."
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  3. #3
    Senior Member Fredmertz51's Avatar
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    Believe the instructions say drive side tightened first then other side as far as it will go. They have torque specs, but I never use them.(Cascade168 beat me by a minute)
    Just because I don't care doesn't mean I don't understand.

  4. #4
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    I just cracked the cap from too much torque. Do I have to buy a whole new bb or can I get the cap separate

  5. #5
    rebmeM roineS JanMM's Avatar
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    I've heard that's very common and that a LBS should have some that you oughta be able to get cheap.

  6. #6
    Klaatu barada nikto cascade168's Avatar
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    Quote Originally Posted by awsnaps View Post
    I just cracked the cap from too much torque. Do I have to buy a whole new bb or can I get the cap separate
    If the NDS cap is not cracked badly, you can probably use it. I.E. If you "just" cracked it while torqueing, then it's probably still good, as long as it will thread smoothly. That cap does not need to be incredibly tight - just nice and snug will do. If it doen't feel right, then maybe a little teflon tape will do the trick. Just one layer of that can make a big difference.
    "Work is the curse of the drinking class."
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  7. #7
    Senior Member z415's Avatar
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    You can definitely buy it separately, but if it still threads, like the person above said, it'll work. If you opt to buy it, try bikeparts.com.

    This is a common problem and you shouldn't worry about making it flush for future reference.
    Falling is learning...[SIGPIC][/SIGPIC]...learn to not fall in a box.
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  8. #8
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    As far as it bb sticking out, if the 'chain line' is straight, and the pedals spin without hitting the frame, there is no problem. I guess there may be fit issues with the angle your legs make when riding, but that is beyond my low level of wisdom.
    2000 Montague CX, I do not recommend it, but still ride it.
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  9. #9
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    If i were you i would change the cracked cup now... you can use it safely for the life of the bottom bracket, but in two or seven years time when you have to replace it again it's likely to be a whole lot tougher to remove - you may wind up having to chip bits of plastic out to remove it. If you want to take it out now, even if the cup is badly damaged you can just remove the other side first and get the broen one out by hand.


    I don't know if the cups are sold separately, but you could buy a whole new identical bb, just use the cup now and keep the rest of it as a spare.

  10. #10
    cab horn
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    If the plastic cup is contacting the side of the bb inside the frame without a gap then it is proper no matter how much sticks out. I was going to say do not overighten it but too late.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  11. #11
    Senior Member smurf hunter's Avatar
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    Quote Originally Posted by awsnaps View Post
    I just cracked the cap from too much torque. Do I have to buy a whole new bb or can I get the cap separate
    I cracked a plastic NDS cup and just glued it in place, and carefully threaded it in.
    I could've ordered one from the LBS for $4, but was impatient and decided to improvise.
    1990 Merida Albontech DX
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  12. #12
    Your mom
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    Sometimes it just doesn't go all the way in. Ask your LBS. If they're good, they won't charge you for the old one they have sitting around. I've done it enough that I've been to several LBS' for the cup. I don't go back to the one that charged me.

  13. #13
    Senior Member smurf hunter's Avatar
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    Quote Originally Posted by tellyho View Post
    Sometimes it just doesn't go all the way in.
    I was waiting for the obligatory "that's what she said".

    Sorry - Friday afternoon and my brain is mush.
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  14. #14
    Your mom
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    Ha! Thanks for saying it.

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