On Tuesday, May 26, 2026 at 5:24:12 PM UTC-5 Tim wrote: I think you just nailed it Garth. I realize now that the chain that came off was noticeably "stretched" when laid side by side with the new one. I just checked them again and the old one gains 1.5 links. I noticed it at the time but didn't make the connection of how badly the chain rings might/must be correspondingly worn.
So, I'll ask the obvious question ... did you replace the chain with a narrower one? If you wore the chain that much, then you also wore the chain rings. Bite the bullet and buy new chainrings, but I doubt that would solve the chain jamming problem, because narrowing of the teeth from wear wouldn't also narrow the sections of the rings where the chain would jam. RH chainrings are countersunk on one side, so you may have difficulty mounting them reversed. But I wouldn't expect that to solve the problem, anyway. RH sells two different types of chainrings, one of them for narrower chains, and you definitely can't reverse them because of the pins and ramps. Even the standard chainrings wouldn't really work, as they have a pin on the outside to prevent the chain jamming in the crank arm, and their teeth are shaped (though your rings might be the earlier ones, without shaping, and with the amount of wear you might have, probably any shaping gone at this point). I haven't had any trouble with jamming chains up to 10sp on RH cranks with their original chainrings. You should be able to see significant chainring wear in the shape of the teeth, especially if you have a newer chainring to use for comparison. Also, with the chain on the big ring, pull on the chain at the forward (3 o'clock) position on the chainring and see how far you can pull the chain from where it is seated on the ring. A fresh chain on a fresh ring won't allow much movement. Ted Durant Milwaukee, WI USA -- 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 visit https://groups.google.com/d/msgid/rbw-owners-bunch/6117de80-a6f4-4ceb-92a5-b37338d9ba6dn%40googlegroups.com.
