Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  

Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Thread Tools Search this Thread
Old 08-26-08, 02:43 AM   #1
Junior Member
Thread Starter
Join Date: May 2008
Posts: 12
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(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?
aznzero is offline   Reply With Quote
Old 08-26-08, 09:59 AM   #2
Senior Member
bikeman715's Avatar
Join Date: Mar 2008
Location: Salinas , Ca.
Bikes: Bike Nashbar AL-1 ,Raligh M50 , Schwinn Traveler , and others
Posts: 2,584
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 66 Post(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.
bikeman715 is online now   Reply With Quote
Old 08-26-08, 12:11 PM   #3
Senior Member
DannoXYZ's Avatar
Join Date: Jul 2005
Location: Saratoga, CA
Posts: 11,633
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 38 Post(s)
Everything you've ever wanted to know about headsets:

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.
DannoXYZ is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -6. The time now is 11:30 AM.

  • Ask a Question
    get answers from real people!
Click to start entering your question.