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  1. #1
    如果你能讀了這個你講中文 genericbikedude's Avatar
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    Stupid headset question

    Hi--

    So my headtube internal diameter is 1 1/8 inch, and the internal diameter of the cup inside of it is 1 inch.

    If I'm getting a new headset, do I get a 1 inch, or an inch-and-an-eigth?

    Thanks

  2. #2
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    The latter.

  3. #3
    如果你能讀了這個你講中文 genericbikedude's Avatar
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    Are you sure? I'm not, but I was leaning towards 1 inch. Also, I have all these old 70's 10-speed frames lying around, and they all have inch and an eigth internal headtube diameters. Didn't most headtubes use 1-inch headsets on 10-speeds.

    I'm putting a crappy carbon fork on a crappy steel frame, and I'm not sure which ones matew with which.

  4. #4
    8speed DinoSORAs Ed Holland's Avatar
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    Parktool.com website has the correct information on headset standards.

    A 1" headset refers, I believe to the diameter of the fork steerer tube, not the head tube diameter, but please check the parktool site, it is a great "First stop" for all questions of this type.

    Cheers,

    Ed
    Get a bicycle. You will certainly not regret it, if you live.

  5. #5
    Senior Member sydney's Avatar
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    Quote Originally Posted by Ed Holland
    Parktool.com website has the correct information on headset standards.

    A 1" headset refers, I believe to the diameter of the fork steerer tube, not the head tube diameter, but please check the parktool site, it is a great "First stop" for all questions of this type.

    Cheers,

    Ed
    Yeah, it's steerer diameter.

  6. #6
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    Oops, sorry, I was wrong. Read your post wrong. The 1 and 1/8 refers to the steerer diameter, which hopefully corresponds with internal cup diameter. For some reason, I read your steerer is 1 1/8 in...

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