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  1. #1
    commuter extraordinaire
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    what about the tube?

    okay, so I know my shiny new headset will fit my old fork and all that, but how do I know if it'll all fit in the head tube of the frame I'm using? I've read over sheldon's site and it's just not clicking in my head.

    Also, I couldn't find info on bottom bracket/crank set compatibility/measuring so I have no idea what kind/size cranks/bb's I need. Thanks!
    What are ya gonna do? Bleed on me?

  2. #2
    i don't stop travsi's Avatar
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    well ...what size is your headtube?

  3. #3
    如果你能讀了這個你講中文 genericbikedude's Avatar
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    This is a threaded headset? Take the length of the steer tube, and subtract the stack height of the headset and the length of the headtube. For it to fit, the result should be zero, or a few mm above zero.

    For chainline/crank/bb compatibility, you need to know what kind of crank you are using. Each crank has a specific bb for a given chainline. Track chainline is usually 42mm (if i remember correctly). Once you get the crank, figure out what length BB spindle will give you this.

    For the BB, measure the shell. If 70mm, get ital BB. If 68, get ISO.

  4. #4
    commuter extraordinaire
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    my head tube is 30mm and the fork I was going to put on previously had a 1 1/8" headset.

    And the width of the frame for the bb doesn't matter?
    What are ya gonna do? Bleed on me?

  5. #5
    Chronic Tai Shan ofofhy's Avatar
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    Quote Originally Posted by Toasted
    Also, I couldn't find info on bottom bracket/crank set compatibility/measuring so I have no idea what kind/size cranks/bb's I need. Thanks!
    http://www.sheldonbrown.com/bbsize.html
    From Craig's List: IF its a singlespeed that means----all the other parts are broken cut off and dumped...dont buy singlespeeds, the bikes will make your balls fall off

    * no -- it's NOT ok to contact this poster with services or other commercial interests

  6. #6
    如果你能讀了這個你講中文 genericbikedude's Avatar
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    Quote Originally Posted by Toasted
    my head tube is 30mm and the fork I was going to put on previously had a 1 1/8" headset.

    And the width of the frame for the bb doesn't matter?
    do you know the difference between a threaded and a threadless headset?

  7. #7
    commuter extraordinaire
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    Quote Originally Posted by genericbikedude
    do you know the difference between a threaded and a threadless headset?
    for the most part. the headset I just removed from the frame was threaded and all my other bikes are threadless. And from looking at the diagram of my new headset for the other, free wheeling bike i'm building, there's a lot more hardware than what I just took off this old depot. bike.

    As for anything beyone that, no, I'm as ignorant as a potato.
    What are ya gonna do? Bleed on me?

  8. #8
    如果你能讀了這個你講中文 genericbikedude's Avatar
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    does your new headset have any threads? does it include an allen bolt?

  9. #9
    commuter extraordinaire
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    Quote Originally Posted by genericbikedude
    does your new headset have any threads? does it include an allen bolt?
    It's a threadless cane creek s-3 that did come with a small allen bolt I originally bought for my other bike but, if it'll fit this other, I'll use it and by a better one for the other bike.

    And just to make sure I'm understanding correctly about the bb: I just measure the width of the shell (on the frame) and the rest is decided by spindle lenght?
    What are ya gonna do? Bleed on me?

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