Advertise on Bikeforums.net



User Tag List

Results 1 to 10 of 10

Thread: Dropping Chain

  1. #1
    xc AND road WoodyUpstate's Avatar
    Join Date
    May 2002
    Location
    Upstate NY
    Posts
    503
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Dropping Chain

    The last few rides I've had some problems dropping the chain when shifting down to the small ring. The limit screw is correctly adjusted and the bike shifts fine, front and rear, under all other circumstances.

    It seems to happen under load, at higher RPM and when the drivetrain may need some lube - at the end of a ride.

    Other than making sure the chain is properly lubed, are there any other suggestions? The chain has 755.5 miles on it since new.

  2. #2
    Just Pedal
    Join Date
    Jun 2002
    Posts
    153
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Chain Suck!!

  3. #3
    New to bikeforýms.net
    Join Date
    Jan 2001
    Posts
    2,202
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Originally posted by Precision Pedal
    Chain Suck!!
    O that really helps dosent it!

    Woody.....your sure that the front derailleur is adjusted properly??? If it happens under load, then dont shift under load??

  4. #4
    Just Pedal
    Join Date
    Jun 2002
    Posts
    153
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Klein,
    Isn't your response similar to the "Doc my arm hurts when i do this" joke? Chain suck defined:
    http://fagan.co.za/Bikes/Csuck/

  5. #5
    Just ride. roadbuzz's Avatar
    Join Date
    Oct 2000
    Location
    C-ville, Va
    Posts
    3,240
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Is there pattern w/regard to which rear cog you're on when it happens?

  6. #6
    Veni, Vidi, Vomiti SteveE's Avatar
    Join Date
    Jun 2002
    Location
    Republic of Anaerobia
    My Bikes
    Serotta Legend Ti, Romani Columbus SL, Soma Doublecross
    Posts
    3,582
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It sounds like the chain is flopping past the small chainring and falling off between the small chainring and the frame. Is that right?

    Check the alignment of the front derailleur. The chain sounds like it's pretty new but you might want to check the length as maybe it's too loose.
    "Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways, totally worn out, shouting ...'holy *****...what a ride!'"

  7. #7
    xc AND road WoodyUpstate's Avatar
    Join Date
    May 2002
    Location
    Upstate NY
    Posts
    503
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Originally posted by roadbuzz
    Is there pattern w/regard to which rear cog you're on when it happens?
    I haven't noticed if the problem is associated with a particular cog, but I'm usually motoring along. I'd say it happens in the middle cogs, let's say 3-4-5.

    I've watched it happen. It just shoots right past the lower ring. Since I had just put new cables on it, I attributed the problem to a stretched cable and out-of-adjustment low limit screw. I tightened the cable and adjusted the limit screw. It's better, but it still shot off last night.

    I suppose I should mention it's an Ultegra double drivetrain.

  8. #8
    Just ride. roadbuzz's Avatar
    Join Date
    Oct 2000
    Location
    C-ville, Va
    Posts
    3,240
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    My Ultegra double would occasionally jump the small ring. I adjusted it so there's a slight front der rub when I'm in the 39 and the next-to-smallest cog (a combination I don't have to use).

  9. #9
    Senior Member pat5319's Avatar
    Join Date
    Sep 2000
    Location
    Spokane WA
    My Bikes
    Seven Axiom Ti, Trek 620, Klein Aura x, Masi cylocross (steel). Masi Souleville 8spd, Fat Chance Mtn (steel), Electra Amsterdam (Steel), Bianchi (Japanese) set up as "fixie", Scwinn Triple Bar cruiser,
    Posts
    1,126
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Get yourself one of those chaindrop blockers that attatch to the seat tube, end of story. The pros use 'em!!!

    Ride Better
    Pat
    Pat5319


  10. #10
    xc AND road WoodyUpstate's Avatar
    Join Date
    May 2002
    Location
    Upstate NY
    Posts
    503
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Before my ride last night I cleaned the chain and gave it two coats of lube, working the first in before applying the second. Then I tried to throw the chain during the ride. All was well and the chain didn't drop.

    Previously, I had done a couple of rides in the rain and I suspect the chain was stiff and under lubed. Road grime and water had scoured the lube away, and I didn't lube enough after each wet ride.

Posting Permissions

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