Crankset shimano xt m8000- Mtbr.com
Results 1 to 14 of 14
  1. #1
    mtbr member
    Reputation:
    Join Date
    Oct 2019
    Posts
    18

    Crankset shimano xt m8000

    Hi,

    I have crankset shimano xt m8000 2x11 boost. I dismounted both chainrings 26-36 and mounted 32T shimano m7000 dedicated for 1x11. Generally all is running fine with my 11-42 cassette. I have only impression that chain is to curved on highest cogs and wonder if I should add spacers between spider and chainring in front.

  2. #2
    mtbr member
    Reputation:
    Join Date
    Jul 2019
    Posts
    1,115
    Your talking about your chain line? If the 32t is as close to the frame as it can be, then no.

    With any 11s or 12s the chain line on the largest cog bends dramatically.

  3. #3
    mtbr member
    Reputation:
    Join Date
    Oct 2019
    Posts
    18
    Hi, yes, about chain line. I can add spacers to close it to the frame.

  4. #4
    Hitching a ride
    Reputation: Schulze's Avatar
    Join Date
    Feb 2007
    Posts
    3,191
    It's up to you.

  5. #5
    mtbr member
    Reputation:
    Join Date
    Oct 2019
    Posts
    18
    It's up to me. But how it should be.

  6. #6
    mtbr member
    Reputation:
    Join Date
    Jul 2019
    Posts
    1,115
    Quote Originally Posted by PiotrN View Post
    It's up to me. But how it should be.
    What gear on your cassette is straight with chain line?

    If its in the middle you are done leave it alone.

    Its normal to have a drastic bend in chainline on 1 X 11 or 1 X 12 on the largest cog

  7. #7
    mtbr member
    Reputation:
    Join Date
    Oct 2019
    Posts
    18
    fourth smallest cog. Cassette 11-42 , 11s.

  8. #8
    mtbr member
    Reputation:
    Join Date
    Oct 2019
    Posts
    18
    Quote Originally Posted by Outhouse View Post
    What gear on your cassette is straight with chain line?

    If its in the middle you are done leave it alone.

    Its normal to have a drastic bend in chainline on 1 X 11 or 1 X 12 on the largest cog
    I am more often cycling on highest cogs so I think good idea would be to add 1-2mm spacers. Thanks for help.

  9. #9
    mtbr member
    Reputation:
    Join Date
    Oct 2019
    Posts
    18
    Quote Originally Posted by PiotrN View Post
    I am more often cycling on highest cogs so I think good idea would be to add 1-2mm spacers. Thanks for help.
    *largest cogs

  10. #10
    mtbr member
    Reputation:
    Join Date
    Apr 2008
    Posts
    43
    You will need around 2 mm of spacers and longer bolts.
    -Race Face Steel Inner Chainring Bolts 12.5mm set
    -Shimano XTR FC-M9000 Gear Spacers - Y1PV98030

  11. #11
    mtbr member
    Reputation:
    Join Date
    Oct 2019
    Posts
    18
    Quote Originally Posted by mit3k View Post
    You will need around 2 mm of spacers and longer bolts.
    -Race Face Steel Inner Chainring Bolts 12.5mm set
    -Shimano XTR FC-M9000 Gear Spacers - Y1PV98030
    Hi, many thanks for your post. I already bought longer bolts and used spacers from metal shop. Firstly I used 2mm spacers. Because I have an impression it would work better I added additional 2mm. But it was too much and my crankset failed during ride - bolts were wrenched. So I returned to 2mm. It's good to know there are original shimano spacers available. Thank you.

  12. #12
    mtbr member
    Reputation: Rngspnr's Avatar
    Join Date
    Feb 2016
    Posts
    918
    Your bike mfgr should have a spec for chainline. You want to get your chainring as close to that as possible.
    2016 Evil Following V1
    2016 Dartmoor Primal+

  13. #13
    mtbr member
    Reputation:
    Join Date
    Oct 2019
    Posts
    18
    Quote Originally Posted by Rngspnr View Post
    Your bike mfgr should have a spec for chainline. You want to get your chainring as close to that as possible.
    My bike mfgr has 51.8 mm chainline.

  14. #14
    mtbr member
    Reputation:
    Join Date
    Oct 2019
    Posts
    18
    According to shimano , 1x11 crankset has 53.4 mm in boost standard. I asked in some bike shops and was told that spacers should not be necessary. However I took some rides with no spacers, 2mm and 4mm and definitely spacers are necessary. I think 2-3mm will be finally enough.

Similar Threads

  1. Replies: 7
    Last Post: 06-02-2018, 07:23 AM
  2. Is SRAM 11 spd cassette compatible with a Shimano XT M8000 1x crankset?
    By barenal in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 11
    Last Post: 06-15-2016, 02:12 PM
  3. Shimano XT-M8000 crankset compatibility
    By Ranger Pride in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 2
    Last Post: 02-15-2016, 06:36 AM
  4. Can I convert a triple 3X9 shimano crankset to a single to use in an XT M8000 1X11?
    By drenzoni in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 8
    Last Post: 11-01-2015, 06:46 PM
  5. Replies: 0
    Last Post: 06-15-2015, 09:49 AM

Members who have read this thread: 4

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 2020 VerticalScope Inc. All rights reserved.