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  1. #1
    Senior Member CharleyGnarly's Avatar
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    '93(?) Diamondback Traverse, '96 Gary Fisher Mamba, 1981 SE Racing Quadangle.
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    Headtube/Steerer Problem

    Have a situation and need help.
    I just bought a rigid fork to replace and old Quadra 5 Rock Shox fork. It is 1 1/8" threaded. I assumed that the steerer would be the same length, however it is about 1/4" shorter.
    I assembled it and the threaded cup/nut threads on almost all the way (maybe one full thread does not,) and because of this I can't uses the top locknut.
    I am using a quill adapter so I can use modern threadless type stems.
    What are my options? If I use spacers between the stem and cup/nut will that be enough to hold it in place and keep it from loosening? Is there another type of headset I can use? Since it is 1 1/8" can I change it to a threadless headset set up?
    And if it makes a difference, the frame is a '96 Gary Fisher Mamba.
    Here is a pic.
    Last edited by CharleyGnarly; 02-08-12 at 10:23 AM. Reason: Added photo
    "I have no objection to appeal. I even favor abolition of the death penalty,provided that there is a certainty of punishment, whatever that punishment may be, for in the uncertainty of punishment following crime lies the weakness of our halting justice."
    Isaac Charles Parker, The "Hanging Judge," 1889.

  2. #2
    Ho-Jahm Hocam's Avatar
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    You can't use a threadless headset because the fork steerer is too short for a stem so you still have no way to hold the bearing preload.

    You might be able to find another 1 1/8" threaded headset with a shorter stack height, hard to say because threaded 1 1/8" is very old and was only produced for a short time. Alternatively, you could keep your current headset and attempt to use smaller ball bearings in place of whatever size is being used currently but that might not work with the headset cup and cone fit.
    Race-o-meter:
    Broken until next season

  3. #3
    "I'm OK!" dminor's Avatar
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    1971 Suzuki TS125/factory race kit/AHRMA-legal; 1969 Suzuki TS250/factory race kit; 1967 Suzuki K-15 Hillbilly Trail 80; 1977 Yamaha IT175; 1964 VanTech Scrambler racing frame
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    Seems to me you've caught plenty of threads; so all you're missing is room for the jam-nut? If it were me, I think I would just do this:


  4. #4
    Ho-Jahm Hocam's Avatar
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    Oh sure, do it the easy way.
    Race-o-meter:
    Broken until next season

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