Advertise on Bikeforums.net



User Tag List

Results 1 to 3 of 3
  1. #1
    Senior Member Sundance89's Avatar
    Join Date
    Feb 2010
    Location
    Scottsdale, Arizona
    My Bikes
    [IMG]http://i531.photobucket.com/albums/dd359/89ScottG/TourdeScottsdalePic.jpg[/IMG]
    Posts
    668
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Shimano Deore Mushy Shifter

    I have a Gary Fisher mountain bike and when shifting the rear derailleur from larger to smaller cogs, the shifter is extremely mushy and has lost any kind of defined click, consequently it misses. Shifting up the rear cogs to a lower gear is perfect with a well defined click. The gears have always been dialed in and adjusted correctly. The cable is taught.

    I usually would suspect grime in a situation like this, but I have lubed the cables and housing and taken the shifter cover off and lubed inside of that. The bike is 8 years old though, and I have never actually replaced the cable and housing. The cable looks good, but I obviously can't see inside the housing. Would you suspect that I need to go new?

    The RD is thoroughly cleaned and lubed in all moving parts. The bike did fall over a couple of weeks ago, but I can see no bend in the rear derailleur hanger and don't suspect this kind of behavior from the shifter to be a result of that.

    Another possibility is the shifter lever return spring has broken. I'm not sure about pulling that thing apart to repair and the cost of a new shifter itself is a little high. Any advice on identifying the problem and what's wrong here first?

    Appreciate your help,
    Thanks
    Last edited by Sundance89; 08-01-10 at 08:50 PM.

  2. #2
    Senior Member vredstein's Avatar
    Join Date
    Aug 2008
    Location
    Tucson, Arizona
    My Bikes
    '02 Lemond Buenos Aires, '98 Fuji Touring w/ Shimano Nexus premium, '06 Jamis Nova 853 cross frame set up as commuter, '03 Fuji Roubaix Pro 853 back up training bike
    Posts
    701
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Sundance89 View Post
    I have a Gary Fisher mountain bike and when shifting the rear derailleur from larger to smaller cogs, the shifter is extremely mushy and has lost any kind of defined click, consequently it misses. Shifting up the rear cogs to a lower gear is perfect with a well defined click. The gears have always been dialed in and adjusted correctly. The cable is taught.

    I usually would suspect grime in a situation like this, but I have lubed the cables and housing and taken the shifter cover off and lubed inside of that. The bike is 8 years old though, and I have never actually replaced the cable and housing. The cable looks good, but I obviously can't see inside the housing. Would you suspect that I need to go new?

    The RD is thoroughly cleaned and lubed in all moving parts. The bike did fall over a couple of weeks ago, but I can see no bend in the rear derailleur hanger and don't suspect this kind of behavior from the shifter to be a result of that.

    Another possibility is the shifter lever return spring has broken. I'm not sure about pulling that thing apart to repair and the cost of a new shifter itself is a little high. Any advice on identifying the problem and what's wrong here first?

    Appreciate your help,
    Thanks
    Can you describe how you lubed the shifter? Sometimes it takes a good soaking with aerosol Triflow, and a blast of compressed air to dissolve the original grease which often turns to tar with age.
    "See, it's not that getting wet is a big deal. Really, it's what you're getting wet with.
    Fenders....because it's probably urine."
    Bike Snob NYC

  3. #3
    Senior Member Sundance89's Avatar
    Join Date
    Feb 2010
    Location
    Scottsdale, Arizona
    My Bikes
    [IMG]http://i531.photobucket.com/albums/dd359/89ScottG/TourdeScottsdalePic.jpg[/IMG]
    Posts
    668
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by vredstein View Post
    Can you describe how you lubed the shifter? Sometimes it takes a good soaking with aerosol Triflow, and a blast of compressed air to dissolve the original grease which often turns to tar with age.
    No I wasn't as thorough as your procedure with the shifter. I simply unscrewed the cap and lightly lubed everything the long tip could reach. It really didn't seem dirty at all, but perhaps it's what I'm not seeing? That could go for the cable housing too. The bike has long been converted for utility purposes and is garage kept, so I'm not mountain biking in the mud with it, but still, it's 8 years old.

    I've been checking on Shimano Deore Rapidfire Plus shifters and the price is not as high as I thought. Still, if I pop for new shifters, I want my aim to be true and not waste money on something I don't need.

Posting Permissions

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