With the disclaimer that I highly doubt chain width is the OP's problem - it was just one of the possibilities I introduced, I think old goopy lube and/or a worn drivetrain are most likely - I do not agree with Mr. Zinn. My Wipperman 8-speed chain does indeed have a slightly wider inner width than my 11-speed from the same company. Is it enough to to change the 3/32 designation? Doubtful. Is it enough to mess up running my 11-speed chain on a 1x chainring labeled 9/10 speed? No. But there's a difference there, which is why I brought it up while I was throwing darts at the board to see how many possibilities there was for Matthew's problem.
On Friday, September 16, 2022 at 12:16:13 AM UTC-7 Nick Payne wrote: > I'd say that your middle chainring is probably quite worn, to the point > where the teeth refused to let go of the bottom run of the chain and > carried it up and around until it jammed under the derailleur and top run > of chain. As to how to avoid it, replace chainrings before they get to that > point of wear. I can't see that using an 11-speed chain on older chainrings > can cause a problem, as the width of the rollers has not changed as the > number of speeds has increased (at least up to 11-speed). Leonard Zinn > explains it here: > https://www.velonews.com/gear/tech-faq-chain-width-explained-compatibility-queries-answered/ > . > > I have unused chainrings dating all the way back to 6- and 7-speed days, > the width of the teeth on them is no different to that on modern > chainrings, and I've run 11-speed chains on the older rings without any > problem. 13-speed Campagnolo Ekar is the only groupset I have where the > internal chain width and chainring tooth width have both been decreased > from the widths of fewer speed setups. > > Nick > -- 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/b1401693-8f23-4be1-b038-cfc27daea559n%40googlegroups.com.
