Can't figure out whats making this racket.
Page 1 of 2 12 LastLast
Results 1 to 25 of 34
  1. #1
    RoadBikeReview Member
    Reputation:
    Join Date
    Mar 2019
    Posts
    16

    Can't figure out whats making this racket.

    https://www.youtube.com/watch?v=bUo5BDhwydM

    I have indexed the gears to the best of my abilities and they shift fine. Checked RD and FD. Nothing rubbing. If I take the chain off and spin the crank and the rear wheel no such noise. What could be causing this?

  2. #2
    tlg
    tlg is offline
    RoadBikeReview Member
    Reputation: tlg's Avatar
    Join Date
    May 2011
    Posts
    14,277
    B-Tension screw. Your rear derailleur pulley is too close to the cassette.
    Custom Di2 & Garmin/GoPro mounts 2013 SuperSix EVO Hi-MOD Team * 2004 Klein Aura V

  3. #3
    RoadBikeReview Member
    Reputation:
    Join Date
    Mar 2019
    Posts
    16
    Quote Originally Posted by tlg View Post
    B-Tension screw. Your rear derailleur pulley is too close to the cassette.
    I've extended the screw out completely and its still the same unfortunately.

  4. #4
    tlg
    tlg is offline
    RoadBikeReview Member
    Reputation: tlg's Avatar
    Join Date
    May 2011
    Posts
    14,277
    Quote Originally Posted by Hulldown View Post
    I've extended the screw out completely and its still the same unfortunately.
    Well then you're still doing it wrong. Backing it out moves the pulley closer to the cassette. You want it farther away.

    Custom Di2 & Garmin/GoPro mounts 2013 SuperSix EVO Hi-MOD Team * 2004 Klein Aura V

  5. #5
    RoadBikeReview Member
    Reputation:
    Join Date
    Mar 2019
    Posts
    16
    Quote Originally Posted by tlg View Post
    Well then you're still doing it wrong. Backing it out moves the pulley closer to the cassette. You want it farther away.

    Just did that and tried it over a range. Still there

  6. #6
    RoadBikeReview Member
    Reputation:
    Join Date
    Mar 2019
    Posts
    16
    Quote Originally Posted by tlg View Post
    Well then you're still doing it wrong. Backing it out moves the pulley closer to the cassette. You want it farther away.


    If I push the bottom pulley of the RD just slightly ahead the noise stops - what would that indicate?

  7. #7
    tlg
    tlg is offline
    RoadBikeReview Member
    Reputation: tlg's Avatar
    Join Date
    May 2011
    Posts
    14,277
    Quote Originally Posted by Hulldown View Post
    Just did that and tried it over a range. Still there
    What size cassette and which derailleur are you using?
    Custom Di2 & Garmin/GoPro mounts 2013 SuperSix EVO Hi-MOD Team * 2004 Klein Aura V

  8. #8
    RoadBikeReview Member
    Reputation:
    Join Date
    Mar 2019
    Posts
    16
    Quote Originally Posted by tlg View Post
    What size cassette and which derailleur are you using?
    Its a brand new bike with a 9 speed cassette and SORA RD.

    Some pictures : https://imgur.com/a/k9ljNbY

  9. #9
    RoadBikeReview Member
    Reputation:
    Join Date
    Sep 2011
    Posts
    405
    That video shows the side of the drivetrain we don't need to see. I would make sure the chain is routed through the pulley arm correctly. There's a tab between the pulleys. It sounds to me like the chain is on the wrong side of that tab, causing it to rub on said tab and make that awful noise. A quick video, or photo of the other side of the derailleur would help determine what is going on better.

  10. #10
    'brifter' is a lame word.
    Reputation: cxwrench's Avatar
    Join Date
    Nov 2004
    Posts
    14,190
    Quote Originally Posted by Hulldown View Post
    If I push the bottom pulley of the RD just slightly ahead the noise stops - what would that indicate?
    That would indicate that your derailleur won't adjust properly for the cassette and length of chain you are using. In your video you have the chain on one of the middle cogs, is the noise worse on the larger/largest cogs? If so you are probably using a cassette that is over the capacity of the derailleur.

    Tell me about ALL of the drivetrain parts on the bike: cassette size, rear derailleur model/cage size, and what kind of crank you have (how many chain rings and size).
    I work for some bike racers
    I've got some bikes, some guns,
    and a bunch of skateboards

  11. #11
    RoadBikeReview Member
    Reputation:
    Join Date
    Oct 2013
    Posts
    3,104
    And post a picture on the chain side, in the small/small.
    BANNED

  12. #12
    RoadBikeReview Member
    Reputation:
    Join Date
    Sep 2011
    Posts
    405
    Quote Originally Posted by cxwrench View Post
    That would indicate that your derailleur won't adjust properly for the cassette and length of chain you are using. In your video you have the chain on one of the middle cogs, is the noise worse on the larger/largest cogs? If so you are probably using a cassette that is over the capacity of the derailleur.

    Tell me about ALL of the drivetrain parts on the bike: cassette size, rear derailleur model/cage size, and what kind of crank you have (how many chain rings and size).
    I just looked at the imgur link. Everything looks normal to me (obviously, pictures don't move or make sound). OP says it "shifts fine". All I can figure from what I've seen and heard here is that he's just off by a half a barrel adjuster turn.

    OP, while turning the cranks, fine tune the barrel adjuster very slowly counter clockwise and listen for that noise to stop. If it gets worse, slowly turn it the other way. If that doesn't do the trick, I would have the hanger alignment checked.

  13. #13
    RoadBikeReview Member
    Reputation:
    Join Date
    Oct 2017
    Posts
    573
    if the noise gets better by pushing in (or out)on the lower jockey wheel, I suspect you might have a bent rear derailleur hangar.

    Your bike shop should have a tool to check this. It's a 10 minute job to check and adjust this.

  14. #14
    [REDACTED]
    Reputation: Lombard's Avatar
    Join Date
    May 2014
    Posts
    9,476
    Quote Originally Posted by Finx View Post
    if the noise gets better by pushing in (or out)on the lower jockey wheel, I suspect you might have a bent rear derailleur hangar.
    This is what I am thinking.
    "With bicycles in particular, you need to separate between what's merely true and what's important."-- DCGriz, RBR.

    “Statistics are like bikinis. What they reveal is suggestive, but what they conceal is vital.” -- Aaron Levenstein



  15. #15
    'brifter' is a lame word.
    Reputation: cxwrench's Avatar
    Join Date
    Nov 2004
    Posts
    14,190
    Quote Originally Posted by Finx View Post
    if the noise gets better by pushing in (or out)on the lower jockey wheel, I suspect you might have a bent rear derailleur hangar.

    Your bike shop should have a tool to check this. It's a 10 minute job to check and adjust this.
    After seeing the photos it's pretty obvious you're right, the hanger is definitely bent in.
    I work for some bike racers
    I've got some bikes, some guns,
    and a bunch of skateboards

  16. #16
    RoadBikeReview Member
    Reputation:
    Join Date
    Mar 2019
    Posts
    16
    Quote Originally Posted by cxwrench View Post
    After seeing the photos it's pretty obvious you're right, the hanger is definitely bent in.
    The gear shifting is fine. I can only hear the rumble when the chain is on the bigger crank in the front and on the 4-5 gear (smaller cogs from the top) in the rear.

    Here is a video of the sound. https://www.youtube.com/watch?v=lyataluRBu4

    You can hear the additonal rumble to the chain clatter.

  17. #17
    RoadBikeReview Member
    Reputation:
    Join Date
    Mar 2019
    Posts
    16
    Quote Originally Posted by Finx View Post
    if the noise gets better by pushing in (or out)on the lower jockey wheel, I suspect you might have a bent rear derailleur hangar.

    Your bike shop should have a tool to check this. It's a 10 minute job to check and adjust this.
    Its by pushing the jockey wheel forward towards the crankset, and not inwards towards the wheel.

    Also if I turn the bike upside down, the noise minimizes *shrug*

  18. #18
    RoadBikeReview Member
    Reputation:
    Join Date
    Sep 2011
    Posts
    405
    Quote Originally Posted by Hulldown View Post
    The gear shifting is fine. I can only hear the rumble when the chain is on the bigger crank in the front and on the 4-5 gear (smaller cogs from the top) in the rear.

    Here is a video of the sound. https://www.youtube.com/watch?v=lyataluRBu4

    You can hear the additonal rumble to the chain clatter.
    The videos you are posting are really not helping. You need to film from behind the rear derailleur.

  19. #19
    RoadBikeReview Member
    Reputation:
    Join Date
    Mar 2019
    Posts
    16
    Quote Originally Posted by 202cycle View Post
    The videos you are posting are really not helping. You need to film from behind the rear derailleur.
    https://www.youtube.com/watch?v=eUjGklfmJ10
    Last edited by Hulldown; 03-15-2019 at 07:04 AM.

  20. #20
    'brifter' is a lame word.
    Reputation: cxwrench's Avatar
    Join Date
    Nov 2004
    Posts
    14,190
    Quote Originally Posted by Hulldown View Post
    If the noise is coming from the rear end show the damned rear end. From behind.
    I work for some bike racers
    I've got some bikes, some guns,
    and a bunch of skateboards

  21. #21
    RoadBikeReview Member
    Reputation:
    Join Date
    Sep 2011
    Posts
    405
    Quote Originally Posted by Hulldown View Post
    I recommend taking your bike to a shop.

  22. #22
    [REDACTED]
    Reputation: Lombard's Avatar
    Join Date
    May 2014
    Posts
    9,476
    Quote Originally Posted by Hulldown View Post
    Quote Originally Posted by 202cycle View Post
    The videos you are posting are really not helping. You need to film from behind the rear derailleur.
    Quote Originally Posted by cxwrench View Post
    If the noise is coming from the rear end show the damned rear end. From behind.
    The video you just posted is in front of the crankset. Put the camera BEHIND the bike BEHIND the rear derailleur. We need to see the pulleys in motion from the rear.
    "With bicycles in particular, you need to separate between what's merely true and what's important."-- DCGriz, RBR.

    “Statistics are like bikinis. What they reveal is suggestive, but what they conceal is vital.” -- Aaron Levenstein



  23. #23
    RoadBikeReview Member
    Reputation:
    Join Date
    Mar 2019
    Posts
    16
    all right guys here are two videos

    First from the back : https://www.youtube.com/watch?v=QN-A...zdeOyUEECyovJo

    Second - i placed my phone right next to the BB : https://www.youtube.com/watch?v=oTHl...p2L4-dx44tWr7Q

  24. #24
    RoadBikeReview Member
    Reputation:
    Join Date
    Sep 2011
    Posts
    405
    Quote Originally Posted by Hulldown View Post
    all right guys here are two videos

    First from the back : https://www.youtube.com/watch?v=QN-A...zdeOyUEECyovJo

    Second - i placed my phone right next to the BB : https://www.youtube.com/watch?v=oTHl...p2L4-dx44tWr7Q
    I am unsubscribing form this thread. Take your bike to the shop. You obviously don't know what BEHIND the derailleur means. The first of those videos was almost exactly the same as the previous video you posted. The second video shows your thumb I guess.

  25. #25
    RoadBikeReview Member
    Reputation:
    Join Date
    Mar 2019
    Posts
    16
    Quote Originally Posted by 202cycle View Post
    I am unsubscribing form this thread. Take your bike to the shop. You obviously don't know what BEHIND the derailleur means. The first of those videos was almost exactly the same as the previous video you posted. The second video shows your thumb I guess.
    The second video is just me trying to get as close as possible to BB to record the sound.

    If you think I am trying to avoid LBS i am not - there just isnt one nearby. The closest is 3 hrs drive.

    Here is behind the deraillur : https://youtu.be/4_CYuNMF2sA

Page 1 of 2 12 LastLast

Similar Threads

  1. Help me figure out whats wrong!!
    By pulser955 in forum Coaching
    Replies: 18
    Last Post: 04-30-2013, 12:58 PM
  2. New chain making huge racket, no stiff link though...ideas?
    By sqwk77 in forum Components, Wrenching
    Replies: 25
    Last Post: 01-14-2012, 08:33 AM
  3. Cadbury Creme Eggs are a racket
    By BAi9302010 in forum The Lounge
    Replies: 32
    Last Post: 03-13-2011, 04:08 AM
  4. Neuvation F100 making a racket over bumps
    By bateswil in forum General Cycling Discussion
    Replies: 11
    Last Post: 05-15-2010, 07:34 PM
  5. Calling Ed Racket - eurovids from the new season?
    By aljames in forum Cyclocross
    Replies: 0
    Last Post: 09-25-2007, 03:23 AM

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 ROADBIKEREVIEW

VISIT US AT

© Copyright 2019 VerticalScope Inc. All rights reserved.