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

does gap between top of steerer tube and top of stem have to be 3mm

Search
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.

does gap between top of steerer tube and top of stem have to be 3mm

Thread Tools
 
Search this Thread
 
Old 06-16-06, 07:37 AM
  #1  
Senior Member
Thread Starter
 
Join Date: Feb 2006
Posts: 75
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
does gap between top of steerer tube and top of stem have to be 3mm

Just cut a new steerer tube. The gap between it and the top of the stem is about 1-1.5mm. I know that 3mm seems to be preferred, so the stem cap has something to sink on to. When I crank down the stem cap, I get no rattle or weird feeling in the bars. Is 3mm mandatory or can I be lazy and stick with what I have? As I write, I have this weird feeling I should shut up and go back and finish the job I started by taking off another 1.5-2mm. What a PITA.

ffff
feefifofum is offline  
Old 06-16-06, 07:44 AM
  #2  
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
As long as the steerer tube doesn't come up against the underside of the top cap and prevent your getting the proper headset adjustment, you are fine.
HillRider is offline  
Old 06-16-06, 07:45 AM
  #3  
Senior Member
 
caotropheus's Avatar
 
Join Date: Mar 2005
Location: Portugal-Israel
Posts: 863
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Either do the job untill the end or get a taller spacer
caotropheus is offline  
Old 06-16-06, 07:46 AM
  #4  
Senior Member
 
barba's Avatar
 
Join Date: Nov 2005
Posts: 4,083
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Seems to me that the only point of the gap is to allow the cap to pre-load the headset before you tighten down the stem bolts. Try it and see if it works with your current gap. If not, file that last mm off.
barba is offline  
Old 06-16-06, 08:07 AM
  #5  
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 caotropheus
Either do the job untill the end or get a taller spacer
An additional 2 mm spacer under the stem would also work if you don't want to cut the steerer again and can't get the proper adjustment as it is.
HillRider is offline  
Old 06-16-06, 02:47 PM
  #6  
Senior Member
 
Join Date: Feb 2005
Location: Oklahoma
Posts: 9,438

Bikes: Trek 5500, Colnago C-50

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 7 Times in 6 Posts
When you think you are through hold the front brake tight and rock the bike forward and rearward while checking for movement between the steer tube and the lower end of the head tube (shouldn't be any).

Al
Al1943 is offline  

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



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.