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

shifting problem mtb

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.

shifting problem mtb

Old 09-08-10, 05:35 PM
Senior Member
Thread Starter
Join Date: Mar 2006
Posts: 60
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
shifting problem mtb

having some trouble with my mtb shifting and need some help. btw, i am a decent mechanic, but not an expert. the set up i am running is shimano xtr m 966 dual control brake (hydraulic) / shift levers and xtr m 960 rear d. i have a fairly new xtr/dura ace chain and gore ride on cables. the cassette is older, but looks good. the bike shifts all gears great except for the problem i am about to describe. the chain will not stay on the second to smallest cog when i am up OR down shifting. going to a harder gear, the chain will shift to the cog and then go back to the 3rd smallest cog when i let go of the shifter. going from the smallest cog the chain shifts and the automatically shifts again to the third smallest cog. the chain will stay on the second cog during a shift if i hold the lever down. as soon as i let go of the lever the chain will go to the 3rd cog. everything else in the drive train works fine and is quiet as can be. i actually want to use this cog as it is the perfect gear for going fast on the road when riding to the trails. and last, but not least i would prefer to not buy a new cassette. help.
hbsyncro is offline  
Old 09-08-10, 11:15 PM
Senior Member
Join Date: Sep 2010
Location: Toronto, ON, Canada
Posts: 409
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Try adjusting the tension with the barrel adjuster (step 4 in the following link):

Step 3 in the following link:
bijan is offline  
Related Topics
Thread Starter
Last Post
Bicycle Mechanics
07-20-17 06:40 AM
Bicycle Mechanics
03-11-17 07:01 PM
Bicycle Mechanics
06-10-16 11:52 AM
Bicycle Mechanics
04-24-12 12:50 AM
Mountain Biking
09-07-10 09:07 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.