George indicates that he's had a loud clunking or crunching sound coming from his bike for 18 years under hard pedaling. He asks "what the heck gives?"
Have you tried to address it in any way? What have you tried? Generally these "my bike makes sounds I don't like under hard pedaling" involve changing one thing at a time and using the changes in the sound to narrow down the source. If you've been riding the same SRAM 971 chain for 18 years, and you actually ride the bike a decent amount, then your entire drivetrain is likely toast. Is that what's going on? Or, do you replace your chain frequently, and the noise never changes? If that's the case, then you've likely ruled out the chain itself as the source. Have you tried riding your bike with different pedals? If the noise is the same with different pedals, then it's probably not the pedals. Have you tried riding your bike with a different rear wheel? If the noise is the same with a different rear wheel, then the rear wheel is probably not the source. Is the noise the same regardless of which front chainring you are in? If so, then one chainring is probably not the source. Have you pulled the crank arms of and checked the BB bearings? Sometimes, a headset problem can feel like drive train noise. If you don't want to dive into iterative and time-consuming diagnostics, have a mechanic you trust look into it, Bill Lindsay El Cerrito, CA On Monday, May 30, 2022 at 11:23:20 AM UTC-7 George Schick wrote: > Ever since I've owned my Ram I've had a unique, loud clunking or crunching > sound coming from the drive train, especially when I started from a > standing stop or occasionally when hammering up an incline. I used to > associate it with the "ghost shifting" phenomenon as posters here referred > to certain chain and cassette indexed shift combinations. But this loud > "clunking" sound never resulted in an unwanted change in gears; it just > sounded like something that shouldn't be happening. > > Well, this has gone on intermittently since about 2004. Yesterday, > however, the chain broke. Broke completely in half, both sides after > starting from a standing stop again. Fortunately, I was carrying a spare > SRAM Powerlink and the event took place while crossing an intersection near > a strip mall that had a bike shop. I borrowed their chain tool to drive > out the pins of the broken link and installed the Powerlink and took it > easy on the way home, worried that it might happen again. > > My question is: What the heck gives?? The chain is a SRAM 971 which is > designated as the proper chain by the manufacturer for 9-speed cassettes. > The cassette is a 9-speed Shimano hyperglide, and the crank/chainrings are > Velo Orange Cru. > > -- 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 rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/77c0f810-8514-4a75-a39b-54df36222014n%40googlegroups.com.
