Advertise on Bikeforums.net



User Tag List

Results 1 to 6 of 6
  1. #1
    Senior Member
    Join Date
    May 2006
    Location
    San Diego
    My Bikes
    IF steel deluxe 29er tourer
    Posts
    1,426
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Ultegra Front Der with 44-32-22 Crankset?

    I want to use drop bar shifters (Ultegra 10-sp STI) with a 44-32-22 crankset (Raceface Deus).

    Would an Ultegra front derailleur work? Do I need to get a new Ultegra 6700 (10-sp) front derailleur or would my existing Ultegra 6500 (9-sp triple) front derailleur suffice? Will either work with a large chain ring of only 44 teeth?

    I've been happy for 35k miles with the latter and a large chain ring of 46 teeth....

    Thanks in advance for your help!

  2. #2
    Senior Member Retro Grouch's Avatar
    Join Date
    Feb 2004
    Location
    St Peters, Missouri
    My Bikes
    Rans Enduro Sport, Hase Kettweisel Tandem, Merin Bear Valley beater bike
    Posts
    23,605
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It's going to look a little goofy with that small chainring but I've never tried it so I honestly don't know.

    Since you already own it, why not try it for yourself and see if you can make it shift to your satisfaction?.

  3. #3
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    25,275
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Road front derailleurs intended for 50 - 53T large chainrings do seem to shift decently with smaller "big" chainrings as long as you position them suitably close to the ring's teeth.

    Shimano's old RSX triple cranks came with 46/36/26 chainrings and used an RX-100 front derailleur intended for a full size 52/42/30 road crank. It shifted quite well.

  4. #4
    Senior Member
    Join Date
    Mar 2010
    Location
    City of Brotherly Love
    My Bikes
    Raleigh Companion, Nashbar Touring, Novara DiVano, Trek FX 7.1, Giant Upland
    Posts
    1,063
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Front derailleurs don't have a minimum sprocket size, just a maximum size. It might look weird but you dont really have any other good options. MTB front derailleurs won't work with road indexed shifting.

    You might get smoother shifting with a 10 speed derailleur.

  5. #5
    Senior Member Shimagnolo's Avatar
    Join Date
    May 2008
    Location
    Zang's Spur, CO
    Posts
    6,253
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Here is an Ultegra 6503 FD with an XT 22/32/48 crankset.
    (The 48T chainring is from the "trekking" set.)
    It does work, but the shifting from the 32T -> 48T is nothing to brag about.

    http://www.dim.com/~ryoder/SomaPhotos/IMGP0018.jpg

    The photo is deceiving.
    The curve of the cage does not follow the chainring very well.
    The result is the trailing end of the cage is quite far from the chainring, making the middle-to-large shift sloppy.

  6. #6
    Senior Member
    Join Date
    Mar 2010
    Location
    City of Brotherly Love
    My Bikes
    Raleigh Companion, Nashbar Touring, Novara DiVano, Trek FX 7.1, Giant Upland
    Posts
    1,063
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Shimagnolo View Post
    Here is an Ultegra 6503 FD with an XT 22/32/48 crankset.
    (The 48T chainring is from the "trekking" set.)
    It does work, but the shifting from the 32T -> 48T is nothing to brag about.
    That might have something to do with the rated capacity of the derailleur. The total capacity is 22 teeth and the max differeance between the top and middle is 13 teeth.

Posting Permissions

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