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Why is my drivetrain so loud?

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Why is my drivetrain so loud?

Old 03-26-19, 02:26 PM
  #1  
miniwill
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Why is my drivetrain so loud?

Hi

Wonder if anyone can help identify why my drivetrain is so loud please?

Couple of video links below. It's all freshly degreased and lubed, doesn't really sound like it's trying to change up or down and adjusting the barrel just makes it worse either way so I'm stumped.

None of the kit is very old either, less than 1000 miles, shimano 105 5800.

Any help or suggestions to try would be great!

Videos:
Can't post since I don't have 10 posts yet...
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Old 03-26-19, 02:32 PM
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Racing Dan
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Lubed with what? Different lubes does affect drive train noise. So does derailleur adjustment.
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Old 03-26-19, 02:36 PM
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Originally Posted by Racing Dan View Post
Lubed with what? Different lubes does affect drive train noise. So does derailleur adjustment.
Tried 3 different lubes now and result is the same, wet or dry.
Currently using Squirt dry lube.
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Old 03-26-19, 03:12 PM
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I would check the length of the chain. I had a new bike a couple of years ago and had the same issue. No matter what adjustments I made the noise continued. I checked the chain and it seemed to be a bit long. Once I removed a link it was nice and quiet.
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Old 03-26-19, 03:29 PM
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Originally Posted by delbiker1 View Post
I would check the length of the chain. I had a new bike a couple of years ago and had the same issue. No matter what adjustments I made the noise continued. I checked the chain and it seemed to be a bit long. Once I removed a link it was nice and quiet.
I wonder if that might be it.
​​​
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Old 03-26-19, 03:30 PM
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Originally Posted by delbiker1 View Post
I would check the length of the chain. I had a new bike a couple of years ago and had the same issue. No matter what adjustments I made the noise continued. I checked the chain and it seemed to be a bit long. Once I removed a link it was nice and quiet.
What other symptoms might I have if it were too long?
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Old 03-26-19, 03:30 PM
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Nearly 10 posts...
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Old 03-26-19, 04:20 PM
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Did you have the chain off? Just asking to see if you have it routed right over the pulleys.
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Old 03-26-19, 08:11 PM
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Maybe you just ride in places that are too quiet and serene.

If everything seems to be running smooth on the rear and the chain is not fed incorrectly through the cage, then take a close look at the front DR trim adjustment. The procedure in the FD 5800 dealer manual might be a little hard to understand, but once you figure out what they are trying to achieve and what each adjustment does it becomes clearer.

If you got your 105 5800 group near the latter part of 2018 or after, then the front DR might actually be 105 5801 and the adjustment procedure is slightly different.
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Old 03-26-19, 08:48 PM
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I had a derailleur a while back whose B spring failed, and in small-small-ish gears where there was a lot of chain slack, the upper pulley would ride right against the freewheel, and clatter. In high tension gears it would pull away and act normally.
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Old 03-27-19, 05:19 AM
  #11  
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There was another thread not too long ago about "dumbest repair mistakes you've made" or something like that. A common one, and I just did it a couple weeks ago, was not routing the chain through the derailleur pulley correction. There's a little tab that the chain should go under but it's easy to thread your chain over it. The bike rides but it makes a continuous noise as the chain rubs against that tab. Check your routing to rule that out. Good luck!
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Old 03-27-19, 02:28 PM
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Thanks for replies.

Confident chain is routed correctly, had to wait 24 hours to post again but the videos are coming!
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Old 03-27-19, 02:47 PM
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Videos:

https://bit.ly/2U0jtWg

https://bit.ly/2HUg7wL
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Old 03-27-19, 02:53 PM
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Show chain route thru the DR cage.
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Old 03-27-19, 03:32 PM
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Originally Posted by trailangel View Post
Show chain route thru the DR cage.
Havent got anything other than this right now



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Old 03-27-19, 03:37 PM
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So you get this noise in all the rear gears? Between the two vid's it seemed less noise in the small rear. Makes me wonder if jockey wheel is hitting on the gears. Did you replace the chain recently? If so, wrong chain or wrong length chain. Or b screw on the rear DR.
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Old 03-27-19, 03:39 PM
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or maybe not if those pic's you just put up are correctly showing the cage position when pedaling.
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Old 03-27-19, 03:44 PM
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Originally Posted by Iride01 View Post
or maybe not if those pic's you just put up are correctly showing the cage position when pedaling.
Yep, pedaling position. Moving derailleur away from cassette doesn't help noise either.
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Old 03-27-19, 03:51 PM
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How many miles on chain and cassette?

Have you check chain for stretch??

Are you certain noise is from back???
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Old 03-27-19, 03:56 PM
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Originally Posted by Iride01 View Post
How many miles on chain and cassette?

Have you check chain for stretch??

Are you certain noise is from back???
Less than 1000 miles on both, probably less than 500 actually.

​​Highly doubt chain is stretched but not checked. Yeah, noise definitely from rear
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Old 03-27-19, 04:10 PM
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is the cassette binding on the frame?
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Old 03-27-19, 06:16 PM
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Is the lockring on your cassette torqued to spec? I had a similar noise on my bike, Ultegra 6700, it was most pronounced with the chain on the middle 3 or 3 cogs. Like you the cassette and chain were new, the derailleur adjustment was spot on, etc. I tried everything I could think of. Finally I pulled the wheel off with the intent of swapping back my older cassette just to compare. When I went to undo the lockring I was surprised that it took very little effort. So instead of swapping the cassette I cinched down the lockring tight, remounted the wheel and blessed silence from my drivetrain.

I can't explain it, the lockring wasn't loose enough that the cogs were moving around (at least not visibly). But it solved the problem.
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Old 03-28-19, 02:25 AM
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Canít help much but Iím curious to see how this pans out. Iím 90% sure that your amount of noise isnít normal. Was your bike ever quieter? What parts have you taken apart and put back on before? Like someone above said, make sure the chain isnít rubbing anything in the derailleur cage. Can we see the derailleur cage from the front, looking back? Thatís where the little tab is.

Also make sure that you put the pulleys in the right spots (assuming youíve looks right though), in the right orientation, with the bolts in the right spots (longer one on top) and torqued decently but not super tight.

B tension (screw that keeps your upper pulley from hitting the cassette) seems fine... but make sure it isnít wrong.

Last edited by smashndash; 03-28-19 at 02:28 AM.
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Old 03-28-19, 03:56 AM
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Does it sound like this on the road, as opposed to in the stand? Could it be the frame or rear wheel is somehow under a different pressure by being in the stand?

E.g., if the stand / trainer is squishing the rear triangle of the frame, causing the derailleur to change angle by just enough to make an annoying noise...
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Old 03-28-19, 05:27 AM
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miniwill
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Originally Posted by ridelikeaturtle View Post
Does it sound like this on the road, as opposed to in the stand? Could it be the frame or rear wheel is somehow under a different pressure by being in the stand?

E.g., if the stand / trainer is squishing the rear triangle of the frame, causing the derailleur to change angle by just enough to make an annoying noise...
Yep, sounds like this on the road too with different wheel/cassette (same 105 5800, just different wheel vs trainer wheel).

Someone else has suggested perhaps the jockey wheels are in wrong, I'm going to check this. I've not had them out but it's not to say they weren't installed wrong when the bike was built.
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