Two problems. Rear derailer, rear shock- Mtbr.com
Results 1 to 5 of 5
  1. #1
    mtbr member
    Reputation:
    Join Date
    May 2011
    Posts
    179

    Two problems. Rear derailer, rear shock

    Just put together a new-to-me '07 Iron Horse Sunday Team which has had it's fair share of use, and there are a couple of issues with it.

    The rear derailer is a SRAM X9 on a 1x9 setup. The chain isn't reaching the two lowest gears, and sticks on the 5th gear going back to the top. I have tried tightening the cable, WD40'ing and relubing the joints of the derailer, and tweaking the shifters a little bit. None of which have helped the problem any. Any ideas?

    The shock is a Fox DHX 3.0 that doesnt seem to be holding air for any longer than 5 minutes. It is a coil setup with gas bottom out/pedal bob support, and the coil is only 300#. I'm a borderline clyde at 195-200#, and I have been reading online that someone of my weight should be using closer to 400-500# coils. Would this be a reason that the shock leaks air, if it is constantly depressed by my weight sitting on it? If it is, would the 500#x3" coils work on this bike if the current one is 300#x3.25"?

  2. #2
    mtbr member
    Reputation: cant fix a flat's Avatar
    Join Date
    Apr 2006
    Posts
    126
    try lossen the cable or turning in the adjuster on the shifter to loose the cable

  3. #3
    Enthusiast
    Reputation: JonathanGennick's Avatar
    Join Date
    Sep 2006
    Posts
    5,359
    Quote Originally Posted by Petti the Yeti View Post
    The rear derailer is a SRAM X9 on a 1x9 setup. The chain isn't reaching the two lowest gears, and sticks on the 5th gear going back to the top. I have tried tightening the cable, WD40'ing and relubing the joints of the derailer, and tweaking the shifters a little bit. None of which have helped the problem any. Any ideas?
    You say your chain is not reaching the two, lowest gears. I would suspect limit screws, or possibly a misaligned hanger. I'd disconnect the shifter cable and start from zero:

    0) I would actually check the hanger alignment, but I'm guessing you don't have the tool for that, so...

    1) Loosen the derailleur cable.

    2) Check to see whether the derailleur spring returns the chain to the smallest cog. Adjust the H-limit screw as needed to make that happen.

    3) Push with my hand to activate the derailleur. Make sure I can push enough to make the chain go onto the large cog, but no further. Adjust the L-limit screw as needed.

    4) Click the shifter to release all cable tension.

    5) Connect the cable back to the derailleur and continue w/adjustment.

    Try the above. Post back w/the results.

  4. #4
    Enthusiast
    Reputation: JonathanGennick's Avatar
    Join Date
    Sep 2006
    Posts
    5,359
    On the shock, I would take it to a bike shop to get it serviced. Something is wrong if it is losing air in just five minutes.

  5. #5
    mtbr member
    Reputation:
    Join Date
    May 2011
    Posts
    179
    Quote Originally Posted by JonathanGennick View Post
    You say your chain is not reaching the two, lowest gears. I would suspect limit screws, or possibly a misaligned hanger. I'd disconnect the shifter cable and start from zero:

    0) I would actually check the hanger alignment, but I'm guessing you don't have the tool for that, so...

    1) Loosen the derailleur cable.

    2) Check to see whether the derailleur spring returns the chain to the smallest cog. Adjust the H-limit screw as needed to make that happen.

    3) Push with my hand to activate the derailleur. Make sure I can push enough to make the chain go onto the large cog, but no further. Adjust the L-limit screw as needed.

    4) Click the shifter to release all cable tension.

    5) Connect the cable back to the derailleur and continue w/adjustment.

    Try the above. Post back w/the results.
    This worked flawlessly! H and L limit screws were the problem. Learn something new every day.

    Quote Originally Posted by JonathanGennick View Post
    On the shock, I would take it to a bike shop to get it serviced. Something is wrong if it is losing air in just five minutes.
    That is what I was thinking. After riding around the street with it, I noticed a slight gurgling sound coming from the shock on the rebound, so something is definitely no bueno in there. Hell, I might just get a new shock if the LBS says they have to repair it. Thinking of a Fox DHX RC4. Just have to check specs and sizes to see if it will fit.

Similar Threads

  1. Rear derailer problems
    By Carraig042 in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 8
    Last Post: 12-12-2009, 05:00 PM
  2. New Rear Shock Problems
    By Westbayou in forum Shocks and Suspension
    Replies: 6
    Last Post: 09-11-2008, 10:11 AM
  3. Sram x7 shifter & Sram sx4 rear derailer w/ 9 spd chain...problems please help!
    By Mason71 in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 8
    Last Post: 12-29-2006, 12:32 PM
  4. rear derailer problems (adjustment)
    By Demonsmasher in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 1
    Last Post: 12-02-2006, 09:59 PM
  5. rear derailer problems
    By tricycle in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 0
    Last Post: 08-01-2005, 03:53 PM

Members who have read this thread: 0

Posting Permissions

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

THE SITE

ABOUT MTBR

VISIT US AT

© Copyright 2020 VerticalScope Inc. All rights reserved.