On Sun, 29 Aug 2021 12:58:58 -0700 (PDT),
> On Sunday, August 29, 2021 at 12:49:09 PM UTC-7, lou.h...@gmail.com
> > On Sunday, August 29, 2021 at 9:31:47 PM UTC+2, Ted Heise wrote:
> > > Kathy and I foundered while standing to climb a steep hill
> > > last weekend when the rear chain started skipping. I
> > > suspected chain (and probably cassette) wear, so I put on a
> > > new set this morning.
> > > We went out again today, and it still acted up when standing
> > > on a hill. I think what's happening is less skipping and
> > > more like ghost shifting. I did notice that after it had
> > > "skipped" last week, the chain ended up on a cog much
> > > smaller than I'd had it on before acting up. So I'm thinking
> > > the rear derailer is the culprit.
> > > Thanks for any suggestions!
Lou, this seems to be something different from either the RD-6700A
I currently have or the RD-8000 I asked about. But it does sound
as if it would be compatible with my cssette from the description.
> Also, before switching out the derailleur, I'd look carefully
> at the cable. Sticking under the BB can cause ghost shifting
> when the BB is flexed (standing out of the saddle)
I regularly put a bit of Krylon teflon lube on the shift cables
where they go under each of the bottom brackets, as well as midway
between where they cross. So I doubt it's that.
> impending cable failure can cause odd shifting issues, although
> short term before it breaks. I'd also check the hanger to make
> sure it is straight.
This is a possibility, though I have some doubts. I've had cable
wear problems before, and it manifested quite differently. I do
plan to get the derailer hanger checked out, and also to replace
the cables and housing. They are approaching 10 years old, and
the cables in particular are pretty beat up adjacent to the
> ...Wearing out the RD would be further down the list for me,
> and it would manifest as sloppiness in or out of the saddle --
> noise, having to over-shift to get a gear. It wouldn't be
> limited to riding out of the saddle, IMO.
The derailer has gradually needed overshifting in more and more
gears, especially at the ends of the cassette. Once it's in a
gear it's usually fine, except for this jumping skipping stuff.
Mostly on the smaller cogs.
Thanks for the suggestions!