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  1. #1
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    Threadless Headset Assembly Issues.

    Hey Guys and Girls,
    I've joined today to ask for some help in assembling a threadless aheadset. I've already pressed in the upper and lower head tube races. I have some parts I know how to assemble but some I don't.

    This picture shows all the parts I have left over. I do not know what to do with parts 3, 4, 5 and 6. I also don't understand what number 7 is and what way the compression ring goes.
    If someone could send me some instructions on how to assemble it that would be just the best ever.

    THANKS,
    Jesse Lattarulo.

  2. #2
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    I'm pretty much guessing here, as I don't have experience with roller bearing headsets.

    I would think that 1 fits between 3 and 5 (in the orientation in the picture, 3 then 1 on top then 5 on top of that). Similarly 2 fits between 4 and 6. Presumably, each roller bearing (1 and 2) is generously greased before going into their stacks.

    I would think that the wide end of each bearing stack (5) would go closest to the headtube, fitting in the pressed in part, but I don't know what the pressed-in part looks like. The compression ring would then nest on top of part 4, with tapered side down.

    Presumably, there's also a fork crown race that you've already installed, and a star fangled nut, bolt and top cap (or equivalent) to apply preload. Not sure about 7, it's hard to see clearly in your photo.
    Last edited by Mondoman; 09-04-11 at 08:45 PM.

  3. #3
    Quirky Grifter LesterOfPuppets's Avatar
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    I'd probably try the order they show in this picture. (reverse for top, of course.) Looks like that big ring is a seal, perhaps.

    Looks like crown race is upside down in pic? 8 should go on top inside either 3 or 4. 3 or 4 might be differently machined to accept 8 or they both might.

    Put it together without cranking down on the top cap bolt and you can get a feel for if the fork is going to spin smoothly.

    Last edited by LesterOfPuppets; 09-04-11 at 09:16 PM.
    1980ish Free Spirit Sunbird fixed * 1996 Mongoose IBOC Zero-G * 1997 KHS Comp * 1990-ish Scapin * Lemond Buenos Aires Triple

  4. #4
    Quirky Grifter LesterOfPuppets's Avatar
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    In order, from the bottom,

    Crown race (flipped from what's shown in Miche pic)
    7 (hopefully 7 is a plastic or rubbery piece) If it's metal, I'd wait for a second opinion.
    3 (or 4)
    1
    5

    { headtube **

    6
    2
    3 (or possibly 4)
    8

    Try this setup without tightening first to get a feel for whether it's right or not.
    1980ish Free Spirit Sunbird fixed * 1996 Mongoose IBOC Zero-G * 1997 KHS Comp * 1990-ish Scapin * Lemond Buenos Aires Triple

  5. #5
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    Thanks heaps guys. It seems this is enough information to go with! I think number 7 is the only thing i'm a bit confused about but I think it's for different forks than mine.
    Thanks Again.

  6. #6
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    Actually I worked out the use of part number 7. You were right LesterOfPuppets.

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