Go Back  Bike Forums > Bike Forums > Mountain Biking
Reload this Page >

derailleur setup problem

Mountain Biking Mountain biking is one of the fastest growing sports in the world. Check out this forum to discuss the latest tips, tricks, gear and equipment in the world of mountain biking.

derailleur setup problem

Reply

Old 03-27-09, 01:19 AM
  #1  
serge163
Senior Member
Thread Starter
 
Join Date: Mar 2008
Posts: 56
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
derailleur setup problem

hey
i'm building a 1x9 29er with sram x9 shortcage rear der and x7 shifter and sram pg 950 cassette 11-32 with a 32t chaingring
the problem is when i run the chain through this set up in the smallest cog, i get this sound like it's going to shift up to the next gear, even though i set the limit. and it does this through every gear. i'm using a 9 speed shimano road chain. the drop outs on this bike are horizontal. any advice much appreciated.
serge163 is offline  
Reply With Quote
Old 03-27-09, 10:23 AM
  #2  
M_S
Senior Member
 
Join Date: Dec 2006
Posts: 3,693
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yuor indexing is either slightly off (cable tension) or the wheel is crooked in the dropouts. First make sure the wheel is centered, then readjust the derailleur.
M_S is offline  
Reply With Quote
Old 03-27-09, 10:44 AM
  #3  
jcook1989
Senior Member
 
Join Date: Aug 2008
Location: San Luis Obispo/San Diego
Posts: 223

Bikes: Norco Rampage

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yeah if the chain keeps trying to up shift it means you have to much tension in the cable.
jcook1989 is offline  
Reply With Quote
Old 03-27-09, 11:40 AM
  #4  
serge163
Senior Member
Thread Starter
 
Join Date: Mar 2008
Posts: 56
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
it works just fine in the highers gears
serge163 is offline  
Reply With Quote
Old 03-27-09, 02:13 PM
  #5  
DaJMasta
Senior Member
 
Join Date: Feb 2009
Location: Austin, TX
Posts: 208

Bikes: Giant XTC Team Custom XC bike, Nashbar tourer custom commuter

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Originally Posted by serge163 View Post
it works just fine in the highers gears
But if the cable is overtightened and the lower limiter is set high enough, it will prevent it from shifting to where the cable tension is telling it to go, and will work better at lesser tensions.

Is there any sporadic shifting in the middle gears? This could be a telltale sign of this. Also is there a chance the derailleur is bent or the derailleur hanger is loose/bent?
DaJMasta is offline  
Reply With Quote

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