Advertise on Bikeforums.net



User Tag List

Results 1 to 8 of 8
  1. #1
    Senior Member jgjulio's Avatar
    Join Date
    Sep 2008
    Location
    Long Beach, CA
    My Bikes
    09 Specialized Sequoia, 08 Trek 7200, Very Old Schwinn Cruiser
    Posts
    406
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    FD change on a Trek 7.3 FX

    I am changing the gearing on my 2009 Trek 7.3 FX.

    http://www.trekbikes.com/us/en/bikes/bike_path/fx/73fx/

    It started with: Shimano EF60 trigger, 8 speed, Shimano M191 Front Dérailleur, Deore Rear Dérailleur.
    I have changed the shifters to: Shimano Deore LX SLM580Sram PG970 Cassette (11-34) - Shifters, Sram PC971 Chain (9 speed), and I am trying to install and adjust a Shimano FD M510 Front Dérailleur.

    http://www.universalcycles.com/shopp...02&category=71

    Here is where my problem is. Either I am doing it wrong or the part is the wrong part for this bike.
    I read on the Shimano website that this is a top swing (pull) FD but I also read on other sites that these can be either top or bottom pull. The Trek is a bottom pull FD setup.

    Question: 1. What is the correct FD for this bike?
    2. Do I have the wrong part?

    Thanks
    Last edited by jgjulio; 10-17-09 at 08:07 AM.
    Julio (me)
    2011 Specialized Roubaix Elite
    2009 Specialized Sequoia Elite
    2009 Trek 7.3 (Red)

    Patricia (wife)
    2009 Specialized Sequoia Elite; 2008 Fuji Absolute 2.0

  2. #2
    Wrench - Racer - Fanatic blasternot112's Avatar
    Join Date
    Oct 2007
    Location
    Baltimore, Maryland, USA
    My Bikes
    2007 Novara BigBuzz, 2001 Trek Y-1, 2007 Gary Fisher HiFi, 2006 Cannondale CAAD8, 1986 Peugeot Fixie Tourmalet PH10-LE, Kuwahara Road Tandem, Marinoni Corsa, Trek 810 Steel, 1998 Cannondale m300, Cannondale m600
    Posts
    47
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    elaborate on the problem please
    "It never gets easier, you just go faster."

  3. #3
    just pokin' along desertdork's Avatar
    Join Date
    Aug 2008
    Location
    the desert
    Posts
    1,014
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Your M510 FD may be used with "top-pull" or "bottom-pull" cable routing. When your cable is routed through the pulley on the back of the seat tube, you'd use the bottom-pull routing. Some people may suggest just bypassing the pulley and using the top-pull routing to avoid the lower pulley altogether. The correct routing is in the directions that should have been included with your FD.
    Attached Images Attached Images

  4. #4
    Member
    Join Date
    Aug 2008
    Posts
    29
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Did you replace your crankset? If it is still the original 8 speed setup, there might be issues with the new 9 speed system, as the chain is thinner and spacing different.

  5. #5
    Low car diet JiveTurkey's Avatar
    Join Date
    Aug 2007
    Location
    Corvallis, OR, USA
    My Bikes
    2006 Windsor Dover w/105, 2007 GT Avalanche w/XT, 1995 Trek 820 setup for touring, 201? Yeah single-speed folder, 199? Huffy tandem.
    Posts
    2,359
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by jgjulio View Post
    I read on the Shimano website that this is a top swing (pull) FD but I also read on other sites that these can be either top or bottom pull. The Trek is a bottom pull FD setup.

    Question: 1. What is the correct FD for this bike?
    2. Do I have the wrong part?

    Thanks
    Short answer: You are using the correct part, so what exactly is giving you trouble?

    Have you installed a FD before? FDs are much more finicky than RDs. Follow these directions: http://parktool.com/repair/readhowto.asp?id=75

    Byt he way, "swing" and "pull" are not the same thing. Pull is where the cable is coming from. Swing refers to where the FD's body is in relation to the pivot; the current and new FDs' bodies swing above the pivot, so they are top-swing.
    Quote Originally Posted by slopvehicle View Post
    Not wearing a helmet makes me more aware of my surroundings. I find myself anticipating the hardness of concrete 50 or 100 feet in front of me, it's almost a zen-like connection between my face and the pavement.

  6. #6
    Senior Member jgjulio's Avatar
    Join Date
    Sep 2008
    Location
    Long Beach, CA
    My Bikes
    09 Specialized Sequoia, 08 Trek 7200, Very Old Schwinn Cruiser
    Posts
    406
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    OK problem solved. I went to my local Bike Station and the very nice mechanic adjusted the FD in about three minutes. I watched and theoretically I was doing what he did but his adjustment worked great.
    I really don't get what I was doing wrong but nevertheless my bike now shifts fine.
    Julio (me)
    2011 Specialized Roubaix Elite
    2009 Specialized Sequoia Elite
    2009 Trek 7.3 (Red)

    Patricia (wife)
    2009 Specialized Sequoia Elite; 2008 Fuji Absolute 2.0

  7. #7
    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
    8,767
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by omdemarseille View Post
    Did you replace your crankset? If it is still the original 8 speed setup, there might be issues with the new 9 speed system, as the chain is thinner and spacing different.
    The chain is thinner but the chainring spacing is the same. He won't have any issues using the 9 speed chain on an "8 speed" crankset.

  8. #8
    Senior Member jgjulio's Avatar
    Join Date
    Sep 2008
    Location
    Long Beach, CA
    My Bikes
    09 Specialized Sequoia, 08 Trek 7200, Very Old Schwinn Cruiser
    Posts
    406
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Yep the "8 speed" chainring spacing did not cause any problems.
    Julio (me)
    2011 Specialized Roubaix Elite
    2009 Specialized Sequoia Elite
    2009 Trek 7.3 (Red)

    Patricia (wife)
    2009 Specialized Sequoia Elite; 2008 Fuji Absolute 2.0

Posting Permissions

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