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

Slipping front derailleur cable

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.

Slipping front derailleur cable

Thread Tools
 
Search this Thread
 
Old 07-03-08, 10:15 AM
  #1  
Senior Member
Thread Starter
 
Join Date: Jun 2007
Posts: 168
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Slipping front derailleur cable

After several weeks of slow loosening, I have discovered that the barrel adjuster next to the brifter is slowly turning clockwise over time. The barrel adjuster has been matched with the stop notches, so that is not the problem.

What is the solution to this besides electrical tape? TIA.
snowranger is offline  
Old 07-03-08, 10:30 AM
  #2  
hello
 
roadfix's Avatar
 
Join Date: May 2003
Location: Los Angeles
Posts: 18,692
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 193 Post(s)
Liked 115 Times in 51 Posts
If it's sitting in the stop notches how can it turn be itself?
roadfix is offline  
Old 07-03-08, 10:46 AM
  #3  
Senior Member
Thread Starter
 
Join Date: Jun 2007
Posts: 168
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Those notches are curved (not worn though, since the bike is only a month old) so they don't provide absolute resistance against turning. Going over bumps and such jolts everything I guess.
snowranger is offline  
Old 07-03-08, 10:51 AM
  #4  
hello
 
roadfix's Avatar
 
Join Date: May 2003
Location: Los Angeles
Posts: 18,692
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 193 Post(s)
Liked 115 Times in 51 Posts
With proper cable tension it shouldn't do that. Besides, it's sprung so I can't see how it can turn by itself.......unless your riding buddies are messing with you...

Last edited by roadfix; 07-03-08 at 10:54 AM.
roadfix is offline  
Old 07-03-08, 11:03 AM
  #5  
Senior Member
Thread Starter
 
Join Date: Jun 2007
Posts: 168
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I'm a commuter, and the only thing I need to worry about are messenger guys smoking me.

Yes, it does turn. I've seen it in the groove at one moment and out the next, so I know that it is moving. I guess I should get REI to replace the barrel?
snowranger is offline  
Old 07-03-08, 11:21 AM
  #6  
Senior Member
 
Join Date: Sep 2007
Posts: 91
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
REI has great customer service. I know they will take care of you.
cons is offline  
Old 07-03-08, 12:38 PM
  #7  
Senior Member
Thread Starter
 
Join Date: Jun 2007
Posts: 168
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I just rode over there 20 minutes ago, and they replaced the inner cable and adjuster barrel. We'll see. They're stand up.
snowranger is offline  
Old 07-03-08, 01:06 PM
  #8  
Senior Member
 
Join Date: Aug 2005
Location: New Hampshire
Posts: 1,221

Bikes: Niner RLT 9 RDO, Gunnar Sport, Soma Saga, Workswell WCBR-146

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 114 Post(s)
Liked 19 Times in 19 Posts
You might want to make sure that the cable housing and ferrule isn't jammed in there so tight that when you turn the adjuster, it twists the housing around as well. This just winds up the housing with spring tension that will try to force the adjuster back to its old position over time. I find it helpful to relax the cable tension and then pull the housing and ferrule clear before making any adjustments.
Metaluna is offline  
Old 07-10-08, 12:22 PM
  #9  
Senior Member
Thread Starter
 
Join Date: Jun 2007
Posts: 168
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Still slipping. How annoying.
snowranger is offline  
Old 07-10-08, 04:13 PM
  #10  
Super Moderator
 
Homebrew01's Avatar
 
Join Date: Jul 2004
Location: Ffld Cnty Connecticut
Posts: 21,843

Bikes: Old Steelies I made, Old Cannondales

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 1173 Post(s)
Liked 927 Times in 612 Posts
Originally Posted by Metaluna
You might want to make sure that the cable housing and ferrule isn't jammed in there so tight that when you turn the adjuster, it twists the housing around as well. This just winds up the housing with spring tension that will try to force the adjuster back to its old position over time. I find it helpful to relax the cable tension and then pull the housing and ferrule clear before making any adjustments.
Good thought ..... otherwise it's an odd one.
__________________
Bikes: Old steel race bikes, old Cannondale race bikes, less old Cannondale race bike, crappy old mtn bike.

FYI: https://www.bikeforums.net/forum-sugg...ad-please.html
Homebrew01 is offline  
Old 07-10-08, 08:57 PM
  #11  
Senior Member
Thread Starter
 
Join Date: Jun 2007
Posts: 168
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I am thinking about bottoming out the adjuster so it can't turn anymore, and then adjust the derailleur at the cable bolt. Assuming I can get it right, I won't have to adjust it ever.
snowranger 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.