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

Steerer length rule of thumb?

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.

Steerer length rule of thumb?

Thread Tools
 
Search this Thread
 
Old 11-13-10, 12:10 PM
  #1  
DOS
Senior Member
Thread Starter
 
DOS's Avatar
 
Join Date: Feb 2008
Location: Arlington, VA USA
Posts: 2,108
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 253 Post(s)
Liked 69 Times in 56 Posts
Steerer length rule of thumb?

Is there one as compared to head tube length? My current steerer is 25cm in a 15cm Headtube (so 10cm longer than HT). I think I can make it work with a new frame I am considering with 17cm HT since I have more than 2cm of spacers in current set up. I infer I can just lose whatever spacers I dont need. Am I missing something?
DOS is offline  
Old 11-13-10, 12:18 PM
  #2  
Senior Member
 
Join Date: Sep 2004
Location: boston, ma
Posts: 2,896
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Likes: 0
Liked 1 Time in 1 Post
you did not take into account the current stack height of your headset. if you swap headsets to the new frame then it should be fine, in your situation.
reptilezs is offline  
Old 11-13-10, 12:18 PM
  #3  
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 1,355 Times in 862 Posts
Threadless ?, dont cut it , buy more spacers , some above the stem are FINE.

Find out what feels like the best fit for you. Ride the bike for a fwe months.

rules of thumbs are not for people, even their thumbs are different size..
fietsbob is offline  
Old 11-13-10, 12:26 PM
  #4  
Bianchi Goddess
 
Bianchigirll's Avatar
 
Join Date: Apr 2009
Location: Shady Pines Retirement Fort Wayne, In
Posts: 27,858

Bikes: Too many to list here check my signature.

Mentioned: 192 Post(s)
Tagged: 2 Thread(s)
Quoted: 2930 Post(s)
Liked 2,923 Times in 1,491 Posts
the only rule I have about steerer tubes/headsets is, I never cut/trim it unless the 'extra' is more than an inch.
__________________
One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"

Sugar "Kane" Kowalczyk

Last edited by Bianchigirll; 11-13-10 at 01:18 PM.
Bianchigirll is offline  
Old 11-13-10, 12:31 PM
  #5  
Senior Member
 
Join Date: Feb 2007
Location: Central CA
Posts: 1,414

Bikes: A little of everything

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Remember to take the headset height into consideration (if a new/different or integrated headset is being used). A 2cm change in height (by way of removing spacers) won't matter at all, but try to keep at least one spacer in place between the stem and headset.

Edit: beaten to the punch, badly
Raiden is offline  
Old 11-13-10, 12:54 PM
  #6  
DOS
Senior Member
Thread Starter
 
DOS's Avatar
 
Join Date: Feb 2008
Location: Arlington, VA USA
Posts: 2,108
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 253 Post(s)
Liked 69 Times in 56 Posts
Originally Posted by fietsbob
Threadless ?, dont cut it , buy more spacers , some above the stem are FINE.

Find out what feels like the best fit for you. Ride the bike for a fwe months.

rules of thumbs are not for people, even their thumbs are different size..
Trying to determine whether my current steerer is too short for longer HT, so no plans to cut.
DOS is offline  
Old 11-13-10, 01:16 PM
  #7  
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 1,355 Times in 862 Posts
basic math .. headset stack height + thickness of stem clamp + headtube height
fietsbob is offline  
Old 11-13-10, 02:31 PM
  #8  
DOS
Senior Member
Thread Starter
 
DOS's Avatar
 
Join Date: Feb 2008
Location: Arlington, VA USA
Posts: 2,108
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 253 Post(s)
Liked 69 Times in 56 Posts
Originally Posted by fietsbob
basic math .. headset stack height + thickness of stem clamp + headtube height
Thats what I figured. Thanks
DOS is offline  
Old 11-13-10, 03:07 PM
  #9  
DOS
Senior Member
Thread Starter
 
DOS's Avatar
 
Join Date: Feb 2008
Location: Arlington, VA USA
Posts: 2,108
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 253 Post(s)
Liked 69 Times in 56 Posts
Related headset Question

At this point I plan to reuse the headset from my other frame so stack height will be same. However, I am considering just getting a new headset because the seals on the old headset are looking pretty worn.

Assuming I get one with similar stack height so steerer length isn't an issue, will I have an issue with crown race on my current fork? That is, will I have to swap out whats on there for the one than comes with the new headset (race is not pitted), particularly if I get cartridge bearing rather than the caged balls I have now? Or are crown races for 1 1/8 headset pretty much standard.
DOS is offline  
Old 11-13-10, 05:24 PM
  #10  
DOS
Senior Member
Thread Starter
 
DOS's Avatar
 
Join Date: Feb 2008
Location: Arlington, VA USA
Posts: 2,108
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 253 Post(s)
Liked 69 Times in 56 Posts
Originally Posted by DOS
At this point I plan to reuse the headset from my other frame so stack height will be same. However, I am considering just getting a new headset because the seals on the old headset are looking pretty worn.

Assuming I get one with similar stack height so steerer length isn't an issue, will I have an issue with crown race on my current fork? That is, will I have to swap out whats on there for the one than comes with the new headset (race is not pitted), particularly if I get cartridge bearing rather than the caged balls I have now? Or are crown races for 1 1/8 headset pretty much standard.
Yet another question. Since I will be using a fork I already have , I had planned to use the calipers that I have. I just noticed that Soma says their frame was "designed with 57mm brakes in mind". Since most 57mm brakes have a range of 47-57mm, should I expect that my maximum 49mm caliper brakes will work on rear as long as I go with skinnier tires? Or am I looking at needing new longer reach brakes?
DOS is offline  
Old 11-13-10, 10:41 PM
  #11  
cab horn
 
Join Date: Jun 2004
Location: Toronto
Posts: 28,353

Bikes: 1987 Bianchi Campione

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 42 Post(s)
Likes: 0
Liked 26 Times in 19 Posts
1 1/8 crown racers are pretty much standard.

Tyre size is irrelevant to brake reach. If soma says you need 57mm of brake reach, you will need 57mm of brake reach. Who cares what they say anyways. A 30 second installation test of the brakes will tell you definitively if your current brakes will not work.
operator is offline  
Old 11-14-10, 11:20 AM
  #12  
DOS
Senior Member
Thread Starter
 
DOS's Avatar
 
Join Date: Feb 2008
Location: Arlington, VA USA
Posts: 2,108
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 253 Post(s)
Liked 69 Times in 56 Posts
Originally Posted by operator
1 Tyre size is irrelevant to brake reach. If soma says you need 57mm of brake reach, you will need 57mm of brake reach. Who cares what they say anyways. A 30 second installation test of the brakes will tell you definitively if your current brakes will not work.
Kinda what I was thinking. Buy the frame, if my brakes work, great, if not, Tektro long reach brakes don't cost much.
DOS is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
alij2018
General Cycling Discussion
5
07-08-19 06:07 AM
ssmwalker
Bicycle Mechanics
20
11-13-16 12:57 PM
sailorbenjamin
Classic & Vintage
3
11-20-11 05:36 PM
panamapete
Bicycle Mechanics
4
07-19-11 10:30 AM

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.