Advertise on Bikeforums.net



User Tag List

Results 1 to 2 of 2
  1. #1
    Newbie
    Join Date
    Feb 2011
    Posts
    1
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Front derailleur adjustment for SRAM Red with a 54 tooth chainring

    Any suggestions on setting up/adjusting a front derailleur for SRAM Red with a 54 tooth front chainring on a Kestrel 4000 Pro TT bike? I have an extremely rough transition up and down with every scenario attempted. Any suggestions??
    Last edited by mattp_20; 02-25-11 at 09:52 AM.

  2. #2
    Senior Member
    Join Date
    Apr 2009
    Location
    New Rochelle, NY
    My Bikes
    too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
    Posts
    18,129
    Mentioned
    20 Post(s)
    Tagged
    1 Thread(s)
    It's not that different than a 53t so there shouldn't be anything special involved. Make sure all the basis adjustments are spot on, and maybe back off the outer limit a hair for a more aggressive shift.

    In the dark ages front cages were malleable and you could tweak the inner front tip for better shifting, but most modern FD cages crack if you try that. Possibly setting the FD slightly toed out might help, but you're limited in how much you can do that.

    Also, is your 54t outer phased to work with the inner the way the original crankset was. If not, try rotating the inner ring one position at a time find the one that gives the best phasing and shift response. Having the chain correctly phased to engage at the shift gate makes a big difference. That's what puts the hyper in hyperglide.
    FB
    Chain-L site

    An ounce of diagnosis is worth a pound of cure.

    “Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

    “One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

    WARNING, I'm from New York. Thin skinned people should maintain safe distance.

Posting Permissions

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