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forum
Clicking noise every 1 & 3/4 turn...What to do?
Hi all!
I seem to have this annoying issue on my new bike with Ultegra RX.
Crankset is 50/34, Cassette 36/11.
Every time I'm on 34-27 (sometimes 34-32) I have this disturbing clicking noise exactly every turn and 3/4 of the crankset. It also happens when on 50-27 (which I don't use often).
Some cyclist remarqued that my tiny screws on cassette have to be adjusted (basically the external one for the larger cogs, the internal for the smaller cogs).
Not sure how to go about it but... Can someone help me fix it myself?
Thanks for any feedback
H.
PS: the noise doesn't come from saddle/saddle post or when I lift the bike and just turn the pedals...
If you're new please join in and if you have questions pop them below and the forum regulars will answer as best we can.
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37 comments
Thank you all.
"Pop the bike in that combination with it in a bike stand and slowly back-pedal the cranks - any kick from the rear mech?"
I actually hear the click but seems to come from crankset accompanied by a sort of minor vibration..
and: I'm now in a quite place and, in fact, if I suspend the bike and just pedal away I also hear it, in that gears combination, without mounting the bike!
Some things are only apparent when putting power through the drivetrain.
Park gives great workshop advice, here's their page on rear derailleur adjustment
https://www.parktool.com/blog/repair-help/rear-derailleur-adjustment
Good luck, bicycles should be quiet, and any noises are very irritating.
Nobody has mentioned this to the hard as concrete aero rimmed people yet. I was in the middle of know where last bank holiday and you could hear them coming from a distance - even the solo riders. Not unpleasant - but not silent like a good tourer. I suppose I'll get used to them just like MTB treads oblivious to the fact that I'm probably doing the same!
As for the original problem, take the chain off and before you do anything else with it hang it vertically. A tight link will be observed by seeing a small kink in the chain. But also check what goes around once for every 1 3/4 crank revs. Hand crank gently and you MIGHT be able to feel something. Good luck.
Stiff chainlink?
Pop the bike in that combination with it in a bike stand and slowly back-pedal the cranks - any kick from the rear mech?
I suspended infact the bike and tried but could not hear the noise....
And, no! I don't...
AND, by the way, thanks for getting back to me!!
Read this Shimano doc on adjustment of 'low' and 'high' adjustments also 'end adjustment' or B screw more commonly known
https://si.shimano.com/pdfs/dm/DM-RXRD001-01-ENG.pdf
Watch a few youtube videos of how to setup and adjust rear derailleurs.
Things to bear in mind with niggle faults, correct width chain 10 speed or 11 speed. There is a small difference in width between the two chains and on most setups, it really doesnt affect performance but some bikes are a little temperamental so require the correct kit.
What you need to do is get the bike on a stand or suspend it, so you can hand pedal slowly.
Watch and listen to the chain passing over the gears and through the derailleur. Do this slowly because a tiny click can usually be seen even at very slow chain speeds.
Ive sorted quite a few minor niggling issues by using this method. Its generally due to minor indexing derailleur alignment/position or bent/damaged parts.
Do you know how to use the end stop screws and B screw adjustments and inline cable adjusters?
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