Re: [RBW] Re: Drivetrain maintenance / life

[Richard Rose]

Mine is the un300. I’ve just removed it & it is noticeably smoother off the bike. It’s not “crunchy” & had no side to side play when installed. So maybe it’s not toast yet but it’s out now so… I am honestly considering the traditional cup/cone one Riv sells. The installation does not bother me - I used to do it on my bikes from the ‘70’s. Also intrigued by the Stronglight ones Peter White sells. Sent from my iPhone On Jan 8, 2024, at 12:19 AM, Collin A <collinmichae...@gmail.com> wrote: Everyone has a rule of thumb, but this is mine - replace chain at whatever wear indicator is appropriate for the chain speed (9 is about 0.75% wear, 10/11 is 0.5% wear). An 11 speed chain for me lasts about 6000-8000 miles of pretty nasty conditions with proper waxing and cleaning. My 9 speeds last less but those are the ones on the tourer/commuter/rafter bike. Funnily enough, the chainrings that came on my clem wore out pretty quickly, no idea why though. The 7075 alu rings seem to last much longer. As for other drivetrain  parts, I change my cassette after I've gone through 3 chains, and I change my chainrings after I've gone through 2 cassettes. Of my oldest drivetrain currently in use (about 5 years now), I've only just had to replace the cassette once, so I should be good to go on my chainrings for another 5 years, woo! As for BB, no need to replace until they get crunchy, it isn't too hard to switch out a cartridge BB. Especially since the venerable Un55 BB that I assume your clem has is no longer in production and the Un300 are kinda "meh" in comparison. Cheers, Collin "hold on and let me measure" in Berkeley On Sunday, January 7, 2024 at 11:18:54 AM UTC-8 rmro...@gmail.com wrote: I am two years and 7300 miles in on my Clem. Chain measure tool indicates I need a new chain & 38t large chainring on the Silver crank has some "sharkfining" evident. New chain and chainring will arrive in a few days. Small ring and cassette look good. What sort of mileage do folks usually expect out of these components? While I am at it, bike is apart and standard Shimano cartridge bottom bracket does not exactly feel smooth. It did feel smooth spinning when crank was still installed & there is no play evident. Riv suggests these bottom brackets might be good for 15,000 miles? I do not want to needlessly replace it but the bike is apart so..? -- 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/dbf5370b-8cb5-43b6-a1bb-45fd9b2528aen%40googlegroups.com. -- 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/F2BAB33A-B2ED-4A0E-B1EB-4790D15D04EC%40gmail.com.