Advertise on Bikeforums.net



User Tag List

Results 1 to 7 of 7
  1. #1
    Senior Member
    Join Date
    Mar 2009
    Location
    Boise, ID.
    Posts
    1,253
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    New Cables - Chain riding on side of rear cogs.

    I'm replacing the cables on a early 90's Giant Rincon. It has a 21 speed Suntour drivetrain.

    I have the cables all replaced, and the shiftings farly tuned. However when slowly shifting the rear gears, the chain has a tendency to sort of half ride the cogs, before eventually clunking into place. This tends not to happen when quickly shifting.

    What could be causing this?
    1993 Cannondale T700 - 1994 Specialized Rockhopper - Actionbent T1 (Electrification in progress!)

  2. #2
    Senior Member
    Join Date
    Oct 2009
    Posts
    2,696
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Honestly, this depends on the quality of your components. I can't say for sure, but there may be face wear on either of your RD pivots. This can cause the derailleur to move into a shift position, but move a bit, causing uncertain shifting. If it shifts when you're riding it, I'd say go with it. If it ain't broke, don't fix it.

    Also, it may have something to do with the tension on the cable. Try increasing the tension on the adjuster barrel on the derailleur itself.
    Last edited by DRietz; 12-14-09 at 10:27 PM.

  3. #3
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    25,753
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    I expect your cable tension need to be refined.

  4. #4
    Senior Member
    Join Date
    Feb 2005
    Location
    Oklahoma
    My Bikes
    Trek 5500, Colnago C-50
    Posts
    9,145
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Have you measured your chain for stretch?

  5. #5
    Your mom
    Join Date
    Aug 2006
    Posts
    2,546
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I think both of the obvious culprits have been covered, and it may be a combination of both tension and chain wear. It sounds like your tension is just a little too high.

  6. #6
    nice idea, poor execution
    Join Date
    Oct 2009
    Location
    West Newton, MA
    Posts
    397
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Don't forget cassette wear as well, sometimes the teeth get thin enough to sit between the inner and outer plate on a worn chain when shifted slowly.
    Kevin Duffy, Harris Cyclery, West Newton, MA.
    blog.harriscyclery.com

  7. #7
    Elitist Troglodyte DMF's Avatar
    Join Date
    Jun 2006
    Location
    Dallas
    My Bikes
    03 Raleigh Professional (steel)
    Posts
    6,896
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Al1943 View Post
    Have you measured your chain for stretch?
    +1

    My thought too. This can also happen if the chain and cogs have mis-matched wear. If the chain isn't badly worn now, was it ever?
    Stupidity got us into this mess - why can't it get us out?

    - Will Rogers

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •