It is my opinion that the riveted-together sub-assemblies in Shimano cassettes can indeed be kind of creaky. I concur with Joe Bernard that it makes sense that the gears with a greater chain-angle could be more susceptible to this kind of thing. I imagine that it could be the steel cog creaking against the aluminum carrier to which it is riveted. I imagine it could also be the interface between the first three cog sub-cluster rubbing against the second three cog sub-cluster.
If that's what it is, removing and reinstalling the cassette itself may not change anything. Generally, when I want to isolate the exact location of a sound, I swap things out one at a time. If I suspect it may be the pedals, ride the bike with different pedals. If the noise stays the same, it wasn't the pedals, etc. To test/confirm your sound is located in the rear wheel, swap 11-sp rear wheels with some other bike, if you can. I have a couple of bikes that do this also, but like you haven't gotten around to every possible experiment. When my bike makes a sound I don't like, my obsession with quieting it subsides when I know my bike is 100% mechanically sound. I'll tolerate a noise that I'm confident is not indicative of some significant problem. If the riveted together sub-clusters can click, as I suspect they can, it may be fixable with lube, or replacement. Bill Lindsay El Cerrito, CA On Wednesday, July 21, 2021 at 5:35:26 AM UTC-7 David Wadstrup wrote: > We've played this game before, and I'm reluctant to begin another round. > But after a fruitless deep dive into a general internet search trying to > identify the source of my sound, I thought bringing up my issue here might > be of help. Here goes.... > > I am the proud owner of a beautiful, creamsicle colored Roadeo that I > purchased from a fellow list member here a couple of years ago. I > purchased only the frameset, and built up it up myself. A short while ago > I began to notice a creaking, clicking, cracking-type sound when climbing > steep-ish hills. I loosened and re-tightened just about everything(except > the bottom bracket) in an attempt to fix whatever the source of the sound > might be. No luck. While out on a ride yesterday, I noticed that the > sound was apparently getting worse. I started to fear that there was maybe > a crack somewhere in the frame, and made a plan to remove the crank and > re-install the BB to eliminate it as a possible source(which I ended up not > doing.) But further into the ride, I happened to discover that the sound > only occurs when I am in one of the 3 largest cogs on the cassette. I made > about 7 or 8 trips up and down one of the steeper hills on my route, and > was able to confirm that it did not happen in the 4th, or 5th, or any other > cog in back -- just the 3 largest. > > For clarification, I am running a Shimano 11sp Ultegra group. The sound > is NOT regular. Meaning that it doesn't occur in the same place in either > my wheel's or crank's rotation. It happens both when seated and while I am > out of the saddle. It is more of a cracking, creaking, sound rather than a > clicking sound(although it does sound clicky,) if that makes any sense. It > sounds like what I'd imagine a a cracked something-or-other to sound like. > > I suppose I'll remove and reinstall the cassette when I get a chance, but > figured I reach out to you all to see whether anyone has an inkling of what > the trouble might be. Please let me know your thoughts! > > Thanks! > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/1a60a511-61e2-4d89-8b09-e578598efc16n%40googlegroups.com.
