Since your OP was about a diagnosis, I assumed you wanted to find out the cause. If that's still what you want to do, then change one thing at a time. If you change three things (chain, cassette, and B-tension) and then the behavior of the system changes, you won't know which one was the cause. It's bad science to change multiple things at once if your real objective is to understand what is going on. If your actual objective is just to fix it no matter what, then clearly replacing the entire drivetrain should take care of it.
My advice would be to swap in a different rear wheel. That's a free experiment. If the behavior is the same, the chain is suspect. If the problem is fixed, the chain is not at fault. My alternative advice would be to have a good mechanic look at it and tell you what they would try if it was their bike. The good mechanics here on iBob haven't looked it over. Bill Lindsay El Cerrito, CA On Tuesday, July 24, 2018 at 7:53:51 AM UTC-7, Brett Callahan wrote: > > Thanks to everyone who has chimed in. I wasn't able to tinker further last > night, but I'll be replacing the rear cassette and chain. Hopefully that > solves it. If not, I'll take a long hard look at the hub. > > The B screw is basically all the way in. I'll back that off, too. > -- 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 post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.