Excessive Instinct BC chain slap noise- Mtbr.com
Results 1 to 8 of 8
  1. #1
    mtbr member
    Reputation:
    Join Date
    Dec 2019
    Posts
    2

    Excessive Instinct BC chain slap noise

    I have a 2020 Instinct BC70 and love it. I have noticed excessive noise from the drivetrain with chain slap. Has anyone done anything to reduce the noise successfuilly? So sad the NZ summer will be over as this bike has been a blast on the dry trails.

  2. #2
    mtbr member
    Reputation:
    Join Date
    Sep 2018
    Posts
    46
    My ones a 2018 but I super glued small triangle foam bits to the chain stay and its worked well. Not the best pic but you can just see them.

    Excessive Instinct BC chain slap noise-img_2933.jpg
    Bike RM Instinct, Lives In Whangarei, New Zealand.

  3. #3
    ups and downs
    Reputation: rockyuphill's Avatar
    Join Date
    Nov 2004
    Posts
    15,552
    You might be able to crank the clutch tension up a bit more on the rear derailleur and keep the chain under control. Pages 27/28/29 in this manual

    https://si.shimano.com/pdfs/dm/DM-MARD001-02-ENG.pdf
    I'm a member of NSMBA and IMBA Canada

  4. #4
    mtbr member
    Reputation:
    Join Date
    Sep 2005
    Posts
    727
    This might might be what you're looking for https://stfubike.com/

  5. #5
    mtbr member
    Reputation:
    Join Date
    Aug 2013
    Posts
    183
    I'll just add that many bikes come with chains that could lose a few links from the factory. Many shops don't shorten them. I've never found my instinct particular loud.

  6. #6
    mtbr member
    Reputation:
    Join Date
    Sep 2013
    Posts
    345
    I have had my instinct on 4 rides now and I've noticed the same thing. I think the STFU Bike pieces don't have enough clearance as their site says you need 8mm of clearance between the bottom of the chain and the stay to work. Measuring mine with the E13 11 speed cassette right now, I'm at 6 to 7mm with a 32T ring up front. I'm about to put on a sram eagle setup though and maybe having a 10t vs a 9t will somehow make the difference to get the clearance I would need.

    There is a "ribbed" chainstay protector on Rocky's site but it is sold out at the moment. I emailed them over a week asking when it would be back in stock and have yet to get any answer back. Here is the link:
    https://shop.bikes.com/collections/i...-2020-instinct

  7. #7
    mtbr member
    Reputation:
    Join Date
    Sep 2013
    Posts
    345
    Also perhaps this is an option. This photo is from Melamed's bike from a OneUp promo video and photo shoot. Looks like some mastic tape with what appears to be knobs from a tire glued on to it.

    Excessive Instinct BC chain slap noise-p5pb16842952.jpg

  8. #8
    mtbr member
    Reputation: sprocketjockey9's Avatar
    Join Date
    Jul 2006
    Posts
    1,226
    Mine has been a bit noisy, my clutch leaves a lot to be desired (apparently early Shimano XT's have an issue), but I put 2 of these on my chain stay and seems to be much quieter
    https://smile.amazon.com/ENLEE-Cycli...s%2C196&sr=8-5

Similar Threads

  1. Instinct knocking noise (no, it's not chain slap)
    By Boover in forum Rocky Mountain
    Replies: 15
    Last Post: 03-25-2019, 01:18 AM
  2. Slash excessive chain slap?
    By traditiionalist in forum Trek
    Replies: 14
    Last Post: 09-28-2018, 07:57 AM
  3. Excessive chain slap with Shimano Acera rear derailler....something I can fix?
    By TeaQue in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 4
    Last Post: 12-05-2013, 06:23 PM
  4. Excessive chain slap noise with new 2X10 setup
    By zuuds in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 6
    Last Post: 12-24-2012, 03:13 PM
  5. Excessive chain slap?
    By jbl_91762 in forum Beginner's Corner
    Replies: 16
    Last Post: 09-01-2012, 10:09 PM

Members who have read this thread: 34

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.