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Headset: Theaded to Threadless

SikoraSikora Posts: 519
edited July 2008 in MTB buying advice
A friend of mine is stripping his old GT Agressor frame and fitting new components.

Problem we have is that the old headset was threaded with a quill stem.

Can the headset just be replaced with a threadless one so it can work with a modern fork and stem?

Posts

  • nicklousenicklouse Posts: 50,675 Lives Here
    depends on what the size is.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • SikoraSikora Posts: 519
    1 1/2" inside the headtube (Dunno exactly how accurate that is, my friend measured it)

    http://i49.photobucket.com/albums/f271/ ... CF1241.jpg

    The steerer tube in the photo is 1 1/8"
  • nicklousenicklouse Posts: 50,675 Lives Here
    sorry what is that picture?

    i looks like what ever it is something is wrong.

    if the old fork was 1" or 1 1/8" you can use a threadless headset with a fork that has the same size steerer.


    If the old fork is 1 1/4" then get some reducers to 1 1/8" But the steerer needs to be long enough.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • SikoraSikora Posts: 519
    Forks haven't been pushed all the way through in the photo, so you could see the size difference.
  • SikoraSikora Posts: 519
    This is one of the old cups, held over the steerer tube on the new 1 1/8" forks we want to fit.

    http://i49.photobucket.com/albums/f271/ ... CF1245.jpg

    We no longer have the old forks to check what size steerer it had
  • nicklousenicklouse Posts: 50,675 Lives Here
    means nothing. read the speaks on park tools and get the vernier out and measure things.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
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