Advertise on Bikeforums.net



User Tag List

Results 1 to 7 of 7
  1. #1
    Senior Member
    Join Date
    Aug 2009
    Location
    Toronto, Canada
    Posts
    658
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Chain is hitting the front derailleur + Shifting issue.

    Hi I have a 2002 OCR3 triple and here are my two questions regarding FD and shifting basically.

    1) What should I do to stop the chain from hitting the front derailleur? I kinda looked at websites and youtube videos on HOW'TO fix this kind of issue but I can't make it work on mine? I tried to adjust those two screws on my FD but that didn't solve the issue. I also re-aligned my front derailleur (braze on).

    2) My bike is having difficulties to shift properly on the chain ring. I guess that is because the first problem, and when I try to up/down shift the front chain ring, it won't shift at all instead the chain grinds the FD even harder due to more tension to the one side.



    Thanks

  2. #2
    rebmeM roineS JanMM's Avatar
    Join Date
    Jan 2006
    Location
    Indiana
    My Bikes
    RANS V3, RANS V-Rex, RANS Screamer
    Posts
    11,565
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Try following the Park Tools FD adjustment process:
    http://www.parktool.com/repair/readhowto.asp?id=75
    RANS V3 (steel), RANS V-Rex, RANS Screamer

  3. #3
    Bikaholic blamp28's Avatar
    Join Date
    Dec 2006
    Location
    Western, Michigan
    My Bikes
    Trek Fuel 90, Giant OCR, Rans Screamer Tandem
    Posts
    1,467
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Cable is stretched. If the Park Tool website is not helping you, a competent bike tech at your local bike shop can.
    Trek Fuel XC MTB, Giant OCR Road Bike, Rans Screamer - Tandem

  4. #4
    Senior Member
    Join Date
    Jul 2005
    Posts
    3,192
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Before going to the shop, run through parks adjustment process. Take your time and do each step carefully. If there is still a problem, you can widen the back of the FD cage by removing the smalll screw at the back of the cage. Insert a small washer between the cage plates and put the screw back in. This may buy you the space you need. If all this doesn't do it, stop cross chaining. bk

  5. #5
    Your mom
    Join Date
    Aug 2006
    Posts
    2,546
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    +1 to the Park process. Start at the beginning and do not skip any steps, especially if you're new to FD adjustment

  6. #6
    cab horn
    Join Date
    Jun 2004
    Location
    Toronto
    My Bikes
    1987 Bianchi Campione
    Posts
    28,295
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by blamp28 View Post
    Cable is stretched. If the Park Tool website is not helping you,
    You must be psychic or something.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  7. #7
    Senior Member DannoXYZ's Avatar
    Join Date
    Jul 2005
    Location
    Saratoga, CA
    Posts
    11,495
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Are you talking about the chain rubbing the FD cage as you sweep the rear derailleur through the range gears? If so, that's perfectly normal at the inner and outer extremes. What you need to do is a process called "trimming" the FD. That is, you do a partial half-click of the lever in or outwards to do a half-shift to move the FD cage out of the way of the chain. So basically each front-chainring has two positions it can be in so that it clears the chain either on the outside or the inside. Pick the proper position depending upon what gear you're using in the back. It's an extremely rare occurrence of the perfect lever+FD+chain+RD+cassette+frame combination where you can sweep the rear through all the gears without it rubbing on the front derailleur. Probably in less than 3% of the bikes out there.

Posting Permissions

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