Advertise on Bikeforums.net



User Tag List

Results 1 to 15 of 15
  1. #1
    Senior Member abstractform20's Avatar
    Join Date
    Apr 2009
    Posts
    2,889
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Front Derailleur not shifting into small gear

    please help me.

    and my other road bike's fd wont shift to its largest gear.

    this is cruel

  2. #2
    Senior Member Steev's Avatar
    Join Date
    Jul 2005
    Location
    Backwoods of Ontario
    Posts
    2,136
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    More information gets more useful replies.
    The first thing to check with any shifting issue is that the cable is in good condition and moving freely.
    After you've checked the cable, you next check will be derailleur function and adjustment. Check this link. http://www.parktool.com/repair/readhowto.asp?id=75
    If going thoroughly through those does not address your problems you may have a shifter issue.

  3. #3
    Senior Member
    Join Date
    Mar 2007
    Location
    Louisville, KY
    My Bikes
    Trek Madone 5.5, Klein Q Pro Elite, Surley LHT
    Posts
    469
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Disconnect the cable from the derailleur. Check to make sure the cable is not binding in the housing and the shifter is working. Next see if the chain goes onto the small chain ring when you pedal. If not then the low limit screw is not adjusted properly. For the rear derailleur the chain should go to the largest gear (smallest diameter). If it does not then adjust the high limit screw so the pulleys align with the gear. Next attach the cable to the derailleur and set the tension. For a more complete description see either Park Tools web site or Sheldon Browns.

  4. #4
    Elitist Troglodyte DMF's Avatar
    Join Date
    Jun 2006
    Location
    Dallas
    My Bikes
    03 Raleigh Professional (steel)
    Posts
    6,896
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Stupidity got us into this mess - why can't it get us out?

    - Will Rogers

  5. #5
    Mad bike riding scientist cyccommute's Avatar
    Join Date
    Nov 2004
    Location
    Denver, CO
    My Bikes
    Some silver ones, a black one, a red one, an orange one and a couple of titanium ones
    Posts
    15,600
    Mentioned
    12 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by abstractform20 View Post
    please help me.

    and my other road bike's fd wont shift to its largest gear.

    this is cruel
    The first thing that everyone tells someone with a derailer problem is to adjust the limit screws. This is just plain, flat wrong. Messing with the limit screws is the absolute last place to start with a derailer adjustment. That's after you've replaced cables, housing, shifters, and even wheels

    Assuming that the bike shifted properly in the past, the issue isn't with the limit screws. It's a cable issue. Failure to shift is almost always a cable issue. Failing to shift into a lower gear...again assuming that it shifted in the past...is because the cable is too tight. Have you been adjusting the cable to fix another problem? If so you've probably tightened the cable so that the derailer can't move over properly. Is the housing binding the cable? Then the cable isn't moving far enough to let the derailer move. Is the cable gunky? Or dry?

    Your other derailer is having the opposite problem. It's cable is too loose. You need to tighten it so that the cable can move the derailer the proper distance.

    The links that DMF provides are good resources to learn how to do it. Outside of that, go to a shop and have them show you.
    Stuart Black
    Solo Without Pie. The search for pie in the Midwest.
    Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
    Days of Wineless Roads. Bed and Breakfasting along the KATY
    Twisting Down the Alley. Misadventures in tornado alley.
    An Good Ol' Fashion Appalachian Butt Whoopin'.

  6. #6
    Great State of Varmint Panthers007's Avatar
    Join Date
    Sep 2008
    Location
    Dante's Third Ring
    Posts
    7,481
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    My Copy & Paste.....
    ___________________________________________________________________________

    Take the cable off the FD. Now install it from scratch as per Park Tool Repair:

    http://www.parktool.com/repair/readhowto.asp?id=75

    And BicycleTutor:

    http://bicycletutor.com/adjust-front-derailer/

    When you have it properly trimmed and are ready for the cable - a new one wouldn't hurt - you want to pull the cable taut - not too tight, taut. Then apply 48 to 60 inch-pounds to the pinch-bolt. Then put it through it's paces.

    It's always easier and faster to install a FD from square-one, than it is to make adjustments with it already attached. This tends to fix one thing - while throwing another out of kilter. Start fresh. You'll get it.

    Adding a barrel-adjuster can solve many problems with the cable coming loose - or being too tight.
    How do you keep an idiot in suspense?

  7. #7
    Senior Member abstractform20's Avatar
    Join Date
    Apr 2009
    Posts
    2,889
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    thanks. tightened the cables. now my pedals cant turn on one...

  8. #8
    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 abstractform20 View Post
    thanks. tightened the cables. now my pedals cant turn on one...
    lol.

    Could you please provide better problem descriptions?
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  9. #9
    Senior Member
    Join Date
    Feb 2005
    Location
    Oklahoma
    My Bikes
    Trek 5500, Colnago C-50
    Posts
    9,119
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by abstractform20 View Post
    thanks. tightened the cables. now my pedals cant turn on one...
    Which cables did you tighten?

  10. #10
    Great State of Varmint Panthers007's Avatar
    Join Date
    Sep 2008
    Location
    Dante's Third Ring
    Posts
    7,481
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Use an UZI. Hope it doesn't jam...
    How do you keep an idiot in suspense?

  11. #11
    Senior Member abstractform20's Avatar
    Join Date
    Apr 2009
    Posts
    2,889
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Panthers007 View Post
    Use an UZI. Hope it doesn't jam...
    i have a boomstick...is that similar?

    i tightened the fd cable because i realized it (on both bikes) was very loose.

    however, no i cannot pedal on one...the wheel wont turn and it prohibits the cranks

  12. #12
    Great State of Varmint Panthers007's Avatar
    Join Date
    Sep 2008
    Location
    Dante's Third Ring
    Posts
    7,481
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Has your chain fallen off the chainring in between the bottom-bracket shell and the crankarm?
    How do you keep an idiot in suspense?

  13. #13
    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 abstractform20 View Post
    i have a boomstick...is that similar?

    i tightened the fd cable because i realized it (on both bikes) was very loose.

    however, no i cannot pedal on one...the wheel wont turn and it prohibits the cranks
    This tells us nothing.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  14. #14
    Senior Member abstractform20's Avatar
    Join Date
    Apr 2009
    Posts
    2,889
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Panthers007 View Post
    Has your chain fallen off the chainring in between the bottom-bracket shell and the crankarm?
    no. the cranks turn now, but the fd will not shift.

  15. #15
    Senior Member
    Join Date
    May 2004
    Location
    Wilmington, DE
    My Bikes
    2003 Specialized Hardrock, 2004 LOOK KG386i, 2005 Iron Horse Warrior Expert, 2009 Pedal Force CX1
    Posts
    8,849
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    I usually never say this, but please, do us all a favor and take your bike to a shop. Reading this thread is frustrating due to the lack of useful info in your posts.

    Failing that, do some searching on front derailler issues. See how other people describe their issues and figure out if what they are describing fits your situation. Perhaps you could copy and paste someone's else problem description in this thread. What you have provided so far is worthless in helping anyone diagnose your problem.

Posting Permissions

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