Chains and other drivetrain components will wear quickly or slowly depending on lubrication and conditions. There is no rule of thumb for mileage. Chain lube is a perennial favorite topic, along with tires, etc. but real progress has been made in the past few years, and much lore of old is now obsolete. I like Silca's chain lube products, and if you enjoy the topic, they offer extensive dives into the independent testing and research that back their claims on YouTube. I can attest that their chain wax is well worth the prep, and will save time and wear in any condition. Some of the favorite lubes of the past cause much more rapid wear than no lube at all (due to grinding paste formation), so I urge you to check out the research. The chain is harder than the chainrings, so cleaning, lubing, and replacing it in time will extend the life of the chainring, and the rear cogs, too, depending on what they are made of.
Don't expect the modern cartridge bottom brackets to be as smooth and free as perfectly adjusted and lubricated cup and cone bottom brackets of old. Ask a shop to let you feel a new one, or pay them to check yours. Some bearings just don't have to be perfect to be good! Unless you obsess...which is part of the fun...! Bill Gibson Tempe, Arizona, USA My Photographs <https://billbgibson.myportfolio.com/> : https://billbgibson.myportfolio.com/ and on Behance: https://www.behance.net/BillGibson <https://billbgibson.myportfolio.com/> If you like my photographs, buy me a coffee! <https://www.buymeacoffee.com/04141955> On Sun, Jan 7, 2024 at 12:18 PM Richard Rose <rmros...@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/c36d08e0-3716-4ae7-8289-97ef61140ba1n%40googlegroups.com > <https://groups.google.com/d/msgid/rbw-owners-bunch/c36d08e0-3716-4ae7-8289-97ef61140ba1n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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/CAG33NXHZwtaOSX-YDvdzfogBapG47xNET1DjfP0ZdJ14-iNkOw%40mail.gmail.com.
