






Hi everyone, i've been hearing a really loud chain noise coming from the pulley area, although shifting is perfectly smooth.
I replaced the sprocket and chain and before that there was a no noise. When the RPMs got higher the chain noise got even louder, so I swapped back to the original sprocket and chain – but the chain noise is still there.
Could someone please take a look and see if the pulley might be bent?
I've attached pictures of the replaced sprocket and chain.
Thanks in advance!
The link below has an attached video. expire in 2days.
by whiteruncon
3 Comments
And i also found someone with the same problem.
[Weird noise chain : r/bikewrench](https://www.reddit.com/r/bikewrench/comments/1jz4w9o/weird_noise_chain/)
[Is this a normal sound? Shimano 105: r/bikewrench](https://www.reddit.com/r/bikewrench/comments/17y45pl/is_this_a_normal_sound_shimano_105_around_1500km/)
[Why is my drivetrain so loud? : r/bikewrench](https://www.reddit.com/r/bikewrench/comments/papcn9/why_is_my_drivetrain_so_loud/)
[Is this normal sound for guide pulley? : r/bikewrench](https://www.reddit.com/r/bikewrench/comments/p8v6zx/is_this_normal_sound_for_guide_pulley_before_i/)
[Does this sound unusually loud : r/bikewrench](https://www.reddit.com/r/bikewrench/comments/t7smzn/does_this_sound_unusually_loud_or_is_this_a/)
[Noisy tension pulley cog? : r/bikewrench](https://www.reddit.com/r/bikewrench/comments/v9uqzv/noisy_tension_pulley_cog_how_do_i_get_rid_of_that/)
Deralleur too close.
Is your biggest rear chainring too big for that derailleur?
It looks mighty close for my tastes.
Also are you cross-chained by any chance? As in, big front/big rear? You should never be in this gear, as it’s useless and puts undue strain on the whole system.
Roughly mid/big is around the same, so you should never ever cross chain (big/big or small/small). Work your way up through the back gears then drop back one or two while you go up in the front gears.