Author Topic: Chain rumble  (Read 339 times)

jeffrey

Chain rumble
« on: May 12, 2025, 02:38:11 PM »
Just built my first bike and I have the chain rumbling like this (please ignore the crazy freehub noise popping up here and there)

https://youtube.com/shorts/Ib4CJ3dFoyc

Derailleur seems to be set propely, moves up and down all the range with no problem and the chain isn't touching the adjacent cogs.
Front derailleur should be fine too, this happens mostly on the bigger chainring in both trim positions.

What could it be?

A bent cage?
Twisted hanger?
Cassette working badly with the chain?

Parts are:
Groupset Shimano 105 R7000
Chain Decathlon (KMC) X11
Cassette Goldix SL cnc



Serge_K

Re: Chain rumble
« Reply #1 on: May 12, 2025, 11:03:03 PM »
https://www.goodreads.com/book/show/629.Zen_and_the_Art_of_Motorcycle_Maintenance

The book to read when you're building bikes and feel like jumping out of the window because something isnt working :)

The grind will lead to the light.

You'll end up noticing something is rubbing somewhere, you'll go "ah-ha" and move on to the next problem. Then you run out of problems, and you can ride your bike, get run over by a car, and die. Or maybe you dont get run over by a car, and simply many, many years later, after riding your bike a lot, you die.

The end :)
Fast on the flat. And nowhere else.