What Fr. Derailleur for 40.30.20?- Mtbr.com
Results 1 to 5 of 5
  1. #1
    mtbr member
    Reputation: Badgerboy's Avatar
    Join Date
    May 2004
    Posts
    116

    What Fr. Derailleur for 40.30.20?

    Noticed last night having put the above gear range into situ that its not a good fit with my current XT derailleur

    Any suggestions for a suitable replacement

    cheers

    Kurt

  2. #2
    transmitter~receiver
    Reputation: meltingfeather's Avatar
    Join Date
    May 2007
    Posts
    9,307
    why won't it fit? what's the issue?
    Quote Originally Posted by pvd
    Time to stop believing the hype and start doing some science.
    29er Tire Weight Database

  3. #3
    Professional Crastinator
    Reputation: Fleas's Avatar
    Join Date
    Jan 2006
    Posts
    5,623
    I can get from 20 to 44 with an XT. You just need to open it up a bit more with the screws and get it lined up right. You might have to re-clamp the cable as well. Mine took quite awhile to get it just right.

    If it's more complicated than that, then check if your cranks/BB are somehow too far outboard on the drive side, or your chainrings are spaced wrong (likely too far apart).

    -F

  4. #4
    Always Learning
    Reputation: BruceBrown's Avatar
    Join Date
    Jan 2004
    Posts
    9,606
    Quote Originally Posted by Badgerboy
    Noticed last night having put the above gear range into situ that its not a good fit with my current XT derailleur

    Any suggestions for a suitable replacement

    cheers

    Kurt
    Did you adjust your derailleur down to have the proper gap between the cage and the big ring? I use an FD M-771 (XT) on my RIP 9 with the 20/30/40 combination (XT cranks). You should be able to adjust without any issues, but it all depends on if you are top pull, or bottom pull, top swing, bottom swing, clearance in the FD clamp area/chainstay area, etc...

    In my case, I don't think I even moved mine down from the 44T setting after I found that a 44T was a no-no with a RIP. But maybe I did. Memory is not good these days. The photo shows mine sitting pretty high with nearly 1/2 gap, but it works fine...

    <a href="https://www.flickr.com/photos/[email protected]/4428885477/" title="Russ Anderson's rings by singingsingletracker, on Flickr"><img src="https://farm5.static.flickr.com/4009/4428885477_f200d11b4e_b.jpg" width="1024" height="726" alt="Russ Anderson's rings" /></a>

    BB

  5. #5
    mtbr member
    Reputation: Badgerboy's Avatar
    Join Date
    May 2004
    Posts
    116
    It was practically sitting on the chainstay with a 2mm clearance on the 40t chainring. Will set like BruceBrown now as that looks like it will resolve the issue

    Cheers Guys

    Kurt

Members who have read this thread: 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
  •  

THE SITE

ABOUT MTBR

VISIT US AT

© Copyright 2019 VerticalScope Inc. All rights reserved.