Results 1 to 6 of 6
  1. #1
    mtbr member
    Reputation:
    Join Date
    Dec 2005
    Posts
    748

    11-speed X1 setup. Need to adjust B-tension after a year or so?

    Trek top fuel, bought last June, I have 1000 miles or so on it, mostly on smooth surfaces. I noticed recently when going down some downhills that the chain seemed to be bouncing around back a bit more than it did earlier in the year and last year. The rear derr or something. Just making more noise, I had it kind of shift itself upon pedaling again at the bottom of the hill.

    The front chainring seems tight as a drum.

    I replaced the chain to see is maybe the chain was worn, but it made no difference. Cogs and pulleys look perfectly fine.

    Just wondering if something might be "off" a bit. I remember it being completely silent. It seemed to start now that I think of it after I took the rear wheel off a few times while playing with tires.

    But with the thru-axle, I don't see how that could matter.

    any ideas? Clutch not as strong as before? Can that be adjusted somehow?

  2. #2
    mtbr member
    Reputation:
    Join Date
    Dec 2003
    Posts
    213
    My X01 rear der does the same thing, have about 1700 miles on it now, but it's been getting slowly worse the last 500 hundred miles or so. I was getting a chain drop on just about every downhill section while riding in NC last week. I'm guessing it's the clutch just not working very well any more.

    Got a GX Eagle rear der on the way now to see if that will resolve it.

  3. #3
    mtbr member
    Reputation:
    Join Date
    Dec 2005
    Posts
    748
    Please keep me posted. I'd hate to think an entire rear derr would have to be replaced so quickly. I have shimano XTRs still going from the mid 90's.

  4. #4
    mtbr member
    Reputation: RS VR6's Avatar
    Join Date
    Mar 2007
    Posts
    4,415
    If you have over 1k on your chainring...I would check that too.

  5. #5
    mtbr member
    Reputation:
    Join Date
    Dec 2005
    Posts
    748
    I just checked, 1400 miles total since the day I got it. I have a spare 30T eagle chainring I can try. I'm still using the original 32 X1 chainring. Only thing I've touched is a new chain, but that didn't change it. It feels like it's coming from the rear derr. I guess if I have to buy a whole new derr I will. Maybe I have some type of warranty on it through Trek or something. It's probably 1 year though, if that.

  6. #6
    mtbr member
    Reputation:
    Join Date
    Dec 2003
    Posts
    213
    The eagle GX rear der works fine with the X01 11sp shifter.

    The eagle der can take up a lot more chain slack than the 11sp der. I think that was my issue - running the E13 9-44 and it was barely tight on the 9t cog when the der was new and started getting slack once the clutch start wearing just a bit. I could have removed a couple of links, but I find the drivetrain runs smoother if the der isn't too tight on the taller cogs.

Similar Threads

  1. Crazy high spoke tension, or tension meter off?
    By tuvok in forum Wheels and Tires
    Replies: 14
    Last Post: 04-25-2016, 05:25 PM
  2. Adjust Kona Unit chain tension - noob alert
    By jbass in forum Singlespeed
    Replies: 12
    Last Post: 04-14-2015, 12:57 PM
  3. XT785 wheel - how to adjust spoke tension?
    By nampla in forum Wheels and Tires
    Replies: 3
    Last Post: 02-16-2015, 09:02 PM
  4. how to adjust clutch tension on XX1?
    By Goldberm in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 5
    Last Post: 12-15-2014, 06:46 PM
  5. What does max spoke tension for your rim mean? Average tension?
    By happyriding in forum Wheels and Tires
    Replies: 8
    Last Post: 03-23-2014, 11:03 AM

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

mtbr.com and the ConsumerReview Network are business units of Invenda Corporation

(C) Copyright 1996-2018. All Rights Reserved.