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

Steerer Tube Extender

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 Tube Extender

Old 08-22-15, 05:59 AM
  #1  
SammyJ 
Senior Member
Thread Starter
 
SammyJ's Avatar
 
Join Date: Sep 2010
Location: Summerville SC
Posts: 576

Bikes: 2012 Caad 8 105; 1994 Trek 5500

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 30 Post(s)
Liked 17 Times in 10 Posts
Steerer Tube Extender

Steerer Tube Extender on a carbon fiber composite bike, forks are also carbon fiber, but the steerer tube (at least on top) is metal.

Is this a problem with extra stress on the bike head?
__________________
I have NEVER regretted going on a ride;
I have often regretted not going when I could have!


I am grateful for the headwind that challenged me today!
I am grateful for the tailwind that helped me go fast!


Clydesdales and Athenas Strava Club
https://www.strava.com/clubs/clydesda...bikeforums-net
SammyJ is offline  
Old 08-22-15, 07:34 AM
  #2  
fietsbob
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 1,278 Times in 798 Posts
Head tube, Frame , or this about forks?

Blanket generalization ? IDK. obviously + height = adding leverage , the fork metal is better, if Steel.

BBB BHP-21, nobody distributes these in the USA anymore , so find them abroad and buy it there

https://bbbcycling.com/bike-parts/headset-parts/BHP-21
it is a quill like tube, inside the fork tube.

if threaded 1" then the thinner model 20 will be what may work ..

Last edited by fietsbob; 08-23-15 at 09:32 AM.
fietsbob is offline  
Old 08-22-15, 09:05 AM
  #3  
FBinNY 
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Posts: 35,964

Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter

Mentioned: 124 Post(s)
Tagged: 1 Thread(s)
Quoted: 4361 Post(s)
Likes: 0
Liked 17 Times in 17 Posts
If you stop to consider that some people leave their steerers super long with a tall spacer stack, I can't see hat it's any different.

In any case, it's not a black and white issue, but more of a spectrum with total height above the top bearing, stem extension, rider weight/strength and riding style all being factors.

So maybe it's a problem for a strong rider in hill country who really works the bars on climbs, but OK for a lighter, less aggressive rider in the plains.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is offline  
Old 08-22-15, 02:03 PM
  #4  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 13,773

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2495 Post(s)
Liked 565 Times in 436 Posts
Many fork manufacturers limit how much steerer should extend above the upper bearing race. I would suspect that many would consider a steerer extender a violation of warranty. Andy
Andrew R Stewart is offline  
Old 08-22-15, 03:44 PM
  #5  
bikepro
Senior Member
 
Join Date: Sep 2003
Location: Allen, TX
Posts: 1,916

Bikes: Look 585

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by SammyJ View Post
Steerer Tube Extender on a carbon fiber composite bike, forks are also carbon fiber, but the steerer tube (at least on top) is metal.

Is this a problem with extra stress on the bike head?
I assume you're trying to raise the bars. Depending on the stem you currently have, you might be able to raise the bars enough by changing the stem to one with a steeper angle. However, if you already have a 17 degree and it's flipped up, you may be at the end of the road stem wise. On the other hand, I'd be careful putting a extender on a carbon steerer. Most have a limitation on the number of spacers that can safely be below the stem.
bikepro is offline  
Old 08-22-15, 04:55 PM
  #6  
reshp1
Senior Member
 
Join Date: Jul 2011
Posts: 205
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Being an alloy steerer tube, I would say go for it.
reshp1 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
hrdknox1
Bicycle Mechanics
68
06-22-20 12:00 PM
alij2018
General Cycling Discussion
5
07-08-19 06:07 AM
Beerope
Road Cycling
27
07-12-16 12:32 PM
Nessism
Bicycle Mechanics
19
09-03-13 07:16 PM
digibud
Bicycle Mechanics
5
04-26-12 01:48 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 My Personal Information -

Copyright © 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.