Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

I'm confused...headset size/quill stem

Notices
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.

I'm confused...headset size/quill stem

Old 11-21-12, 11:08 PM
  #1  
Banned.
Thread Starter
 
Mr. Beanz's Avatar
 
Join Date: Dec 2005
Location: Upland Ca
Posts: 19,895

Bikes: Lemond Chambery/Cannondale R-900/Trek 8000 MTB/Burley Duet tandem

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 4 Times in 3 Posts
I'm confused...headset size/quill stem

I've got a Burley Duet spec'd with a 1 1/8 headset.

Wanting wider bars and maybe a bit more height on the stem but old parts are hard to find just walkng into an LBS or Performance type shop. so I figured I might use a quill adaptor. This is where I am confused. Shouldn't the original stem on the Burley say 1 1/8 on the quill stem?

I pulled it out and found 25.4 stamped into the stem which is 1 inch.

I passed on the quill adaptor I saw at Performance because I though I needed one that was stamped 1 1/8.

The quill adaptors at Performance measure 1 inch in diameter, Would it work on my tandem?

I did have the headest changed to a Chris King year ago but that wouldn't explain the size of the quill stem.

Maybe 1/18 headset has nothing to do with the quill stem diameter? I'm lost.

Anyway, if I can use the adaptor, I can easily find new bars and stems in local shops.

Thanks for any clarification.


1997 Burley Duet
https://www.bikepedia.com/QuickBike/B...Duet&Type=bike
Mr. Beanz is offline  
Old 11-21-12, 11:29 PM
  #2  
Insane Bicycle Mechanic
 
Jeff Wills's Avatar
 
Join Date: Mar 2008
Location: other Vancouver
Posts: 9,868
Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 814 Post(s)
Liked 745 Times in 393 Posts
On a "quill" stem, the outside diameter of the quill matches the inside diameter of the steerer tube. "Headset size" always refers to the outside diameter of the steerer. Old, "road standard" forks used 1" diameter steerers and 22.2mm (aka 7/8") diameter quill stems. When "oversize" mountain bikes with 1 1/8" and 1 1/4" headsets came along, they matched up with 25.4mm (1") and 28.6mm (1 1/8") diameter quills. Does that help?

Just don't ask me about threadless headsets or I'll beat you with a turkey drumstick.
__________________
Jeff Wills

Comcast nuked my web page. It will return soon..
Jeff Wills is offline  
Old 11-21-12, 11:44 PM
  #3  
Banned.
Thread Starter
 
Mr. Beanz's Avatar
 
Join Date: Dec 2005
Location: Upland Ca
Posts: 19,895

Bikes: Lemond Chambery/Cannondale R-900/Trek 8000 MTB/Burley Duet tandem

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 4 Times in 3 Posts
Originally Posted by Jeff Wills
On a "quill" stem, the outside diameter of the quill matches the inside diameter of the steerer tube. "Headset size" always refers to the outside diameter of the steerer. Old, "road standard" forks used 1" diameter steerers and 22.2mm (aka 7/8") diameter quill stems. When "oversize" mountain bikes with 1 1/8" and 1 1/4" headsets came along, they matched up with 25.4mm (1") and 28.6mm (1 1/8") diameter quills. Does that help?

Just don't ask me about threadless headsets or I'll beat you with a turkey drumstick.
Cool! I got it! Thanks for the clarification

Inside dia is 1" and the thickness of the tubing creates the outside dia of 1 1/8

Thanks no drumstick neccesary .
Mr. Beanz is offline  
Old 11-21-12, 11:50 PM
  #4  
Banned
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,598

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,357 Times in 863 Posts
yea , ID is inside, OD is out side, tube's wall thickness is in between them .

the headset crown race seat is bigger than the steerer OD,
for some metal to be there for final machining of the seat site..


my bike friday uses a King headset for 1.125" OD threaded steerers.. it is their Grip nut type.

regular 2 nut types there is interchangeability on the threaded or un-threaded type,
the part that meets the bearing on top, so the headsets can be switched over.

Last edited by fietsbob; 11-21-12 at 11:57 PM.
fietsbob is offline  
Old 11-22-12, 10:29 AM
  #5  
Senior Member
 
zukahn1's Avatar
 
Join Date: Oct 2011
Location: Fairplay Co
Posts: 9,551

Bikes: Current 79 Nishiki Custum Sport, Jeunet 620, notable previous bikes P.K. Ripper loop tail, Kawahara Laser Lite, Paramount Track full chrome, Raliegh Internatioanl, Motobecan Super Mirage. 59 Crown royak 3 speed

Mentioned: 26 Post(s)
Tagged: 1 Thread(s)
Quoted: 801 Post(s)
Liked 1,816 Times in 644 Posts
Also quill adapters have two sizes on each the size of the quill that goes in the fork and the size of the post top where the stem attaches.
zukahn1 is offline  
Old 11-22-12, 11:18 AM
  #6  
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 33,656

Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!

Mentioned: 39 Post(s)
Tagged: 0 Thread(s)
Quoted: 2026 Post(s)
Likes: 0
Liked 1,096 Times in 742 Posts
Originally Posted by zukahn1
Also quill adapters have two sizes on each the size of the quill that goes in the fork and the size of the post top where the stem attaches.
Correct. Most have a true 1-1/8" outside diameter upper section where the stem goes and either a 25.4 mm diameter (1-1/8" steerer) or 22.2 mm (1" steerer) for the quill portion.
HillRider is offline  
Old 09-05-13, 11:53 AM
  #7  
Newbie
 
Join Date: Sep 2013
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
First off I wanna say I'm knew to this forum.

2ndly, I have a Gary Fisher AL 1 mountain bike from the early 90's and I want to determine the headset size too. I pulled the handlebar stem and the quill measures 1 1/8"..does that mean the headset is 1 1/8"?
Chugg63 is offline  
Old 09-05-13, 12:25 PM
  #8  
Senior Member
 
Grand Bois's Avatar
 
Join Date: Mar 2005
Location: Pinole, CA, USA
Posts: 17,392
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Quoted: 443 Post(s)
Likes: 0
Liked 28 Times in 26 Posts
Re-read post #2 .
Grand Bois is offline  
Old 09-05-13, 12:27 PM
  #9  
Senior Member
 
demoncyclist's Avatar
 
Join Date: Oct 2002
Location: Medway, MA
Posts: 2,727

Bikes: 2011 Lynskey Sportive, 1988 Cannondale SM400

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 20 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
No, you have a 1 1/4 headset. See post #2 above...
demoncyclist is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
VeloLove
Bicycle Mechanics
6
05-18-15 03:33 PM
Fangowolf
Bicycle Mechanics
5
10-13-12 12:28 AM
mickel
Bicycle Mechanics
17
07-07-10 12:24 AM
jimmy0x52
Bicycle Mechanics
3
03-20-10 07:25 PM
miknsal
Classic & Vintage
6
02-28-10 10:55 PM

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.