Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5
  1. #1
    Senior Member
    Join Date
    Aug 2005
    Posts
    371
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    rapid fire shifters wont shift

    My rapid fire shifters will only click into a few of the gears. After those few gears, the shift lever does not seem to grip the shifting gear, and moves around freely. I have tried spraying it out with wd-40 with no luck. I have had this problem before and resolved it with wd-40, but it will usually grip the gear if I push up on the lever. These shifters wont grip at all. Any ideas?
    thanks in advance

  2. #2
    Dolce far niente bigbossman's Avatar
    Join Date
    Dec 2004
    Location
    Northern CA
    Posts
    10,809
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by fadetoblack6902
    My rapid fire shifters will only click into a few of the gears. After those few gears, the shift lever does not seem to grip the shifting gear, and moves around freely. I have tried spraying it out with wd-40 with no luck. I have had this problem before and resolved it with wd-40, but it will usually grip the gear if I push up on the lever. These shifters wont grip at all. Any ideas?
    thanks in advance
    Yeah. Take the hoods completely off, and tinspect the pawls/gears closely. I can almost guarantee the pawls and their return springs are gunked up with crud or dried grease. Get the WD-40 stream onto them directly and hose them down liberally while working the mechanism. Let them sit for a bit and hoe them down again. They'll start working again.

    I've gotten my hands on a lot of bikes with rapid fire shifters that were inoperable. I've restored every single one to complete functionality by following this procedure.
    "Love is not the dying moan of a distant violin, itís the triumphant twang of a bedspring."

    S. J. Perelman

  3. #3
    biked well well biked's Avatar
    Join Date
    Jul 2005
    Posts
    6,796
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    I agree with bigbossman, a good cleaning is your best bet. Whatever you do, don't dissassemble the small parts inside the shifter pod. I did this once, and I'm proud to say I did get the thing back together, but it was a tedious PITA. And in the end, all I had accomplished was taking it apart and putting it back together. At the time, I think I mistakenly thought I needed to replace a part or something-

  4. #4
    Senior Member
    Join Date
    Dec 2004
    My Bikes
    1982 Bianchi Superleggera (restored with NOS campagnolo components), 1987 Bianchi Campione Del Mundo, 1995 Bianchi Denali (M900/950 XTR components, viscous cycles rigid fork, mavic ceramics), 1996 Specialized Hardrock (winter beater, 8 speed XT group
    Posts
    175
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Check to be sure that it's not that your cable slipped in the clamp on the derailuer. If so you will only get a few gears depending how far it slipped.

  5. #5
    Dolce far niente bigbossman's Avatar
    Join Date
    Dec 2004
    Location
    Northern CA
    Posts
    10,809
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by well biked
    I agree with bigbossman, a good cleaning is your best bet. Whatever you do, don't dissassemble the small parts inside the shifter pod....
    +1

    All you need to do is to be able to observe the pawl, pawl spring, and serrated teeth that they interact with. The pawl is spring loaded, and naturally rests in the serrated teeth to keep the gear under tension. What usually happens is that the spring gets gunked up, and cannot exert enough force to return the pawl into the notches.

    Just take off the cover, locate the little pawl, work the mechanism and observe. You will be able to determine in short order if this is the case with your shifter. If the pawl is not resting securely in one of the notches, you need to clean it.
    "Love is not the dying moan of a distant violin, itís the triumphant twang of a bedspring."

    S. J. Perelman

Posting Permissions

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