Advertise on Bikeforums.net



User Tag List

Results 1 to 3 of 3
  1. #1
    Junior Member
    Join Date
    May 2008
    Posts
    12
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Determining proper headset size...

    I may have phrased the thread name wrong- if so sorry. I'm quite new to the workings of a bike so I do not really know so much. A few weeks back I purchased a frame not knowing too many details of it(none were provided and the seller didn't answer the questions). So I received the frame hoping to build it up- but lacked some info. I didn't know what size fork/headset it required! Of course I did as much research and measuring as I could with the supplies I had(basically a ruler). At first I thought the frame took a 1 1/8" fork because the diameter of the opening was 1 3/16"(or so) but thought, "damn that would make a REALLY tight fit for the fork even without the headset in there!". Did a bit more researching and my measurements seemed to match up with a 1" headset/fork- can anyone confirm/deny this thought?

  2. #2
    Senior Member bikeman715's Avatar
    Join Date
    Mar 2008
    Location
    Salinas , Ca.
    My Bikes
    Bike Nashbar AL-1 ,Raligh M50 , Schwinn Traveler , and others
    Posts
    1,915
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    the inter diameter of your head tube should be 1/100" larger than the lip's outer diameter of the cup/race than will be press in to it. bigger the tube , bigger the cups will be. therefore the wider the steering tube will be. the best tool to use here would be calipers and measure the opening in 4 points and take the adv. of them.

  3. #3
    Senior Member DannoXYZ's Avatar
    Join Date
    Jul 2005
    Location
    Saratoga, CA
    Posts
    11,496
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Everything you've ever wanted to know about headsets:

    http://www.parktool.com/repair/readhowto.asp?id=68

    At the bottom is a list of dimensions to measure in determining headset sizing. Having the right tools to measure headset dimensions is critical. For just $2, you can pick up a set of calipers that'll let you determine the difference between 30.2 vs. 30mm and 26.4mm vs. 27.0mm. Harbour Freight - Centech 6" Utility Caliper.

    Last edited by DannoXYZ; 08-26-08 at 12:14 PM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •