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

Shimano STX FD cable routing

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.

Shimano STX FD cable routing

Old 01-05-17, 07:34 PM
  #1  
MKIV987
Senior Member
Thread Starter
 
Join Date: Jun 2009
Posts: 148
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Shimano STX FD cable routing

I went to replace the cables on my hybrid/commuter and noticed that after replacing the front shifting cable, my twist/grip shifter no longer moves the front derailleur. If I unbolt the cable from the derailleur, the shifter will easily pull and release cable, but once the cable is bolted down to the fd, I can't get it to budge even a little bit. I'm thinking this has to do with the routing of the cable at the derailleur and unfortunately I didn't pay any attention to how it was before. Here are some photos of how I have it now (won't work). Any idea what I'm missing?
https://goo.gl/photos/JKj4VB2Emm68NRMC8
https://goo.gl/photos/MZPgFfio4b8jusZR7
MKIV987 is offline  
Old 01-05-17, 08:29 PM
  #2  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 8,152

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

Mentioned: 28 Post(s)
Tagged: 0 Thread(s)
Quoted: 1371 Post(s)
Liked 905 Times in 630 Posts
Did you place both the shifter and derailleur in the low gear (small chainring) position before attaching the wire?
dsbrantjr is offline  
Old 01-05-17, 09:44 PM
  #3  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 15,169

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: 3011 Post(s)
Liked 1,335 Times in 934 Posts
The cable goes over the top of the der and down to the anchor bolt. Remove the cable and by hand move the cage in and out then track the anchor bolt's arm's movement and make sure the cable is attached in the right direction. Andy.
Andrew R Stewart is offline  
Old 01-05-17, 09:46 PM
  #4  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 15,169

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: 3011 Post(s)
Liked 1,335 Times in 934 Posts
The cable is miss routed. It needs to go over the der and back down to the anchor bolt arm. If you remove the cable and work the der in and out by hand while tracking the movement of the anchor bolt and arm you'll see that the cable is wrongly attached/routed. Andy
Andrew R Stewart is offline  
Old 01-05-17, 10:14 PM
  #5  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 15,169

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: 3011 Post(s)
Liked 1,335 Times in 934 Posts
On third thought (and there were problems with posting the first two times) I might be wrong. But the suggestion to watch the anchor arm's movement while manually working the cage to learn from where the cable needs to pull the der is valid.


I do like the suggestion to make sure the lever is in the low position first. Andy
Andrew R Stewart is offline  
Old 01-06-17, 12:07 AM
  #6  
xenologer
Senior Member
 
Join Date: Aug 2008
Posts: 2,589
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 239 Post(s)
Likes: 0
Liked 6 Times in 6 Posts
That's strange
Is that the original stock derailer for that bike?
Because in the photos, it appears to be a top-pull, derailer
while your cable is approaching from under the bottom bracket.

now, some front derailer's are dual-pull, with a little pulley on them that redirects the cable to allow opposite direction routing, but I don't see that on yours.
It's often a half-arc of plastic on the opposite side of the pivot that the cable is clamped to.

also, your derailer looks like it's mounted too high above the chainrings.... this isn't the original derailer is it?

also notice the chain catching stud on the outer chainring is in the wrong place, its out in the open instead of behind the crank arm

again more evidence points to this bike being potentially not-stock configuration (franken-bike)
you recently acquire this bike? did the front Ever shift in the first place?

Last edited by xenologer; 01-06-17 at 12:11 AM.
xenologer is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
BikingViking793
Bicycle Mechanics
3
08-20-17 02:02 PM
John Kelin
Bicycle Mechanics
7
11-03-12 08:30 AM
nolefan
Bicycle Mechanics
7
09-04-12 08:45 AM
J.Drop
Bicycle Mechanics
5
04-26-12 02:42 AM
jagerk
Bicycle Mechanics
3
04-10-12 07:58 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 © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.