Advertise on Bikeforums.net



User Tag List

Results 1 to 13 of 13
  1. #1
    King Hoternot bianchi10's Avatar
    Join Date
    Jun 2010
    Location
    Oregon City, OR
    My Bikes
    2012 cannondale Supersix
    Posts
    4,779
    Mentioned
    20 Post(s)
    Tagged
    1 Thread(s)

    Front derailer issue

    Simple but have no experience so I'm asking for help. My chain keeps fallling off the large ring on my crank. I watched some youtube videos and thought I was prepared to attempt an adjustment. When I turn either of the bolts, I dont see any movement in my derailer. I'm wanting to move the cage closer to the ring because it looks to be to far away. What am I missing???

  2. #2
    Senior Member Homebrew01's Avatar
    Join Date
    Jul 2004
    Location
    Ffld Cnty Connecticut
    My Bikes
    Old Steelies I made, Old Cannondales
    Posts
    16,030
    Mentioned
    7 Post(s)
    Tagged
    1 Thread(s)
    The limit screws don't move the derailleur unless the derailleur is actually touching the limit screw when adjusting, but that's not a great idea. If the chain is over shifting, turn the correct screw ('H' or 'L') 1/2 turn clockwise ("in"), then try shifting again. If it still overshifts, try another 1/2 turn.

    Park Tools has a tutorial on all the components on their website.
    Bikes: Old steel race bikes, old Cannondale race bikes, less old Cannondale race bike, crappy old mtn bike

  3. #3
    hmm..
    Join Date
    Mar 2006
    Location
    RVA
    Posts
    305
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Homebrew01 View Post
    Park Tools has a tutorial on all the components on their website.
    Agreed. http://www.parktool.com/blog/repair-...ur-adjustments

    And to the OP, posting in Bike Mechanics might be a more appropriate forum.

  4. #4
    King Hoternot bianchi10's Avatar
    Join Date
    Jun 2010
    Location
    Oregon City, OR
    My Bikes
    2012 cannondale Supersix
    Posts
    4,779
    Mentioned
    20 Post(s)
    Tagged
    1 Thread(s)
    danigt, I mucked it all up. gonna have to take it in. I went around like 3 full turns and now I dont know where it was. Now I'm rubbing on the derailer in the small ring when in the big ring on the rear. Still dont see any changes in the large front ring either.

  5. #5
    Senior Member fstshrk's Avatar
    Join Date
    Aug 2011
    Location
    WA State
    Posts
    1,676
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by bianchi10 View Post
    danigt, I mucked it all up. gonna have to take it in. I went around like 3 full turns and now I dont know where it was. Now I'm rubbing on the derailer in the small ring when in the big ring on the rear. Still dont see any changes in the large front ring either.
    Hi don't give up yet. Follow the park tools tutorial linked above. There is no magic to this.

  6. #6
    Infinite Member ahsposo's Avatar
    Join Date
    Jan 2010
    Location
    Everywhere...
    My Bikes
    A Home Built All Rounder, Bianchi 928, Specialized Langster, Dahon Folder
    Posts
    6,992
    Mentioned
    13 Post(s)
    Tagged
    1 Thread(s)
    It helps to have the bike in a stand so you can run the cranks and shift back and forth.
    Quote Originally Posted by toddles View Post
    If I gotta look up words, it's not worth my time.

  7. #7
    King Hoternot bianchi10's Avatar
    Join Date
    Jun 2010
    Location
    Oregon City, OR
    My Bikes
    2012 cannondale Supersix
    Posts
    4,779
    Mentioned
    20 Post(s)
    Tagged
    1 Thread(s)
    I got that. just not understanding what to do even after reading the turtorial. I'm a bit of a ratard and have a 3rd grade reading comprehension. in all honestly it is difficult for me to read something and then apply it. I learn by watching someone doing it or seeing how its done, which is why I watch youtube videos and not read tutorials.
    Last edited by bianchi10; 05-13-12 at 06:56 PM.

  8. #8
    Infinite Member ahsposo's Avatar
    Join Date
    Jan 2010
    Location
    Everywhere...
    My Bikes
    A Home Built All Rounder, Bianchi 928, Specialized Langster, Dahon Folder
    Posts
    6,992
    Mentioned
    13 Post(s)
    Tagged
    1 Thread(s)
    You type really well for a 8888888.
    Quote Originally Posted by toddles View Post
    If I gotta look up words, it's not worth my time.

  9. #9
    King Hoternot bianchi10's Avatar
    Join Date
    Jun 2010
    Location
    Oregon City, OR
    My Bikes
    2012 cannondale Supersix
    Posts
    4,779
    Mentioned
    20 Post(s)
    Tagged
    1 Thread(s)
    I think I'm doing more damage than good here....

    Time to take it to the shop tomorrow and I will just have them show me. (Or draw it out in crayons)

  10. #10
    Senior Member Vlaam4ever's Avatar
    Join Date
    Nov 2008
    Location
    Lake Claire, GA
    My Bikes
    2008 Giant TCR Advanced
    Posts
    802
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Please take your video camera and post it here.

  11. #11
    Senior Member Homebrew01's Avatar
    Join Date
    Jul 2004
    Location
    Ffld Cnty Connecticut
    My Bikes
    Old Steelies I made, Old Cannondales
    Posts
    16,030
    Mentioned
    7 Post(s)
    Tagged
    1 Thread(s)
    Low Limit screw - controls where the FD stops at the small ring
    High Limit screw - controls where the FD stops at the big ring.

    They simply set the range that the FD can move.

    If you are overshifting the big ring so the chain falls onto the pedal, then your High limit screw is out too far & letting the FD go too far. No reason to touch the low limit screw. If the chain won't shift all the way to the big ring, then your high limit screw is in too far and preventing the FD from moving far enough. Same applies the other direction with the low limit screw & small ring.

    I usually make front & rear adjustments in 1/4 to 1/2 turn increments
    Last edited by Homebrew01; 05-13-12 at 08:11 PM.
    Bikes: Old steel race bikes, old Cannondale race bikes, less old Cannondale race bike, crappy old mtn bike

  12. #12
    Senior Member unionmade's Avatar
    Join Date
    Aug 2011
    Location
    Boston, MA
    My Bikes
    Litespeed M1, Jamis Sputnik
    Posts
    467
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by bianchi10 View Post
    I got that. just not understanding what to do even after reading the turtorial. I'm a bit of a ratard and have a 3rd grade reading comprehension. in all honestly it is difficult for me to read something and then apply it. I learn by watching someone doing it or seeing how its done, which is why I watch youtube videos and not read tutorials.
    Lots of YouTube videos on this topic.

  13. #13
    Senior Member telebianchi's Avatar
    Join Date
    Jul 2007
    My Bikes
    2014 Trek Domane 5.2, 2003 Fuji Cross, 2010 Giant Trance, 2006 K2 Mod 4.0, 2010 Schwinn Madison
    Posts
    1,257
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by fstshrk View Post
    Hi don't give up yet. Follow the park tools tutorial linked above. There is no magic to this.
    +1

    Quote Originally Posted by bianchi10 View Post
    I think I'm doing more damage than good here....
    Time to take it to the shop tomorrow and I will just have them show me. (Or draw it out in crayons)
    Get a beer ... relax ... try again tomorrow.

    I didn't fully get derailer adjustments until I put new cables & DRs on a bike and therefore had to start from scratch. I followed instructions from Shimano (can get them on their website) and the Park Tool website. Just take your time and move through the steps.
    May your tires or beer never be flat.

Posting Permissions

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