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

Quill stem questions

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.

Quill stem questions

Old 03-10-14, 10:19 AM
Thread Starter
Join Date: Jul 2012
Location: Denver
Posts: 428

Bikes: S-works Roubaix, S-works Tarmac, Gary Fisher Promethius, Tommasini Competion, Eddy Merckx Corsa 01

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Quill stem questions

So my Tommasini had a frozen quill stem when I bought it. I had to cut it of to be able to tap it out. I'm looking for a new one. I have a 25.4 bar with a 1"stearer. Here are my three questions

Can I get a 26 and think that if I take out the shim it will clamp down tight enough?
Is there some shim material to build up the bar?
Some say if you have a smooth bar you need a smooth surface inside the bar clamp area and if you have a groved bar the inside of clamp you need to match that with groved.

Please advise
squatchy is offline  
Old 03-10-14, 10:30 AM
lostarchitect's Avatar
Join Date: Mar 2010
Location: Catskills/Brooklyn, NY
Posts: 6,978

Bikes: See sig

Mentioned: 18 Post(s)
Tagged: 0 Thread(s)
Quoted: 40 Post(s)
Liked 52 Times in 35 Posts
Yes, you can get a stem with a 26mm clamp and use a shim to mount 25.4 bars. You can get shims on ebay or make your own.

I've never heard that about smooth / grooved. I doubt it is a real issue.
1964 JRJ (Bob Jackson), 1973 Wes Mason, 1974 Raleigh Gran Sport, 1986 Schwinn High Sierra, 2000ish Colian (Colin Laing), 2011 Dick Chafe, 2013 Velo Orange Pass Hunter
lostarchitect is offline  
Old 03-10-14, 10:44 AM
Senior Member
TallRider's Avatar
Join Date: Oct 2005
Location: Fresno, CA
Posts: 4,454
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 128 Post(s)
Likes: 0
Liked 12 Times in 10 Posts
congratulatiosn on being able to tap the old stem out.
You can shim a stem with a 26mm clam to work with 25.4mm bars, but you can find 25.4mm-clamp quill stems easily enough, especially if you're willing to go for a used stem. There are tons of road quill stems with 25.4mm clamps out there. I'd do that if you're able. What stem shape are you looking for (in terms of length and angle)?
"c" is not a unit that measures tire width
TallRider is offline  
Old 03-10-14, 12:26 PM
Senior Member
dsbrantjr's Avatar
Join Date: Sep 2010
Location: Roswell, GA
Posts: 8,318

Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta

Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 1438 Post(s)
Liked 1,088 Times in 721 Posts
If you can locate a stem with a 25.4 clamp that would be preferable. I have had difficulties keeping shimmed bars from creaking. You might be able to wick some Krazy-type glue between the bar and the shim, NOT between the shim and the stem, to quiet things down. But avoiding shims is best.
dsbrantjr is offline  
Old 03-10-14, 01:13 PM
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,599

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,349 Times in 856 Posts
you can also use a quill to threadless adapter , then use a threadless stem .. which are more abundant , now.

there are 25.4. (inch) 26 and a oversize (1.25"), and shims machined to convert any of the larger sizes

back down to any of the smaller ones.

I've used Loc-Tite Red on shim interfaces

of course you can buy a lovely Nitto nickel plated lugged stem ,
and hire one made by anyof a number of custom frame builders.
fietsbob is offline  
Related Topics
Thread Starter
Last Post
Bicycle Mechanics
09-04-18 02:21 PM
Classic & Vintage
07-13-15 07:40 AM
Classic & Vintage
06-09-15 06:04 AM
Bicycle Mechanics
04-14-12 07:04 PM
Shorty Long
Road Cycling
08-03-10 12:36 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

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.