Gears slipping

edmund-<< While on tour I found that my 5th & 6th gears were
slipping. I checked the chain and cluster and all looks ok.
I managed to get to a LBS and the owner wanted to change my
cluster and chain. Does this make any sense? >><BR><BR>

Did he ride the bike and see that the chain was 'skipping'
on those cogs? If so, yes it sounds like those are worn but
500 miles isw way too early.

Maybe der adjust or der hanger or tight link in the chain?

Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St.
Boulder, CO, 80302
(303)440-3535 vecchios.comvecchios.comOpen ↗ "Ruote convenzionali
costruite eccezionalmente bene"

ed said:

While on tour I found that my 5th & 6th gears were
slipping. I checked the chain and cluster and all looks
ok. I managed to get to a LBS and the owner wanted to
change my cluster and chain. Does this make any sense? I
had the rear derail./chain and cluster replaced about 500
miles ago. The only reason I didn't get the work done was
the LBS had a really horrible attitude.

Skipping usually occurs when a new chain is used with a worn
cassette. Since you only have 500 miles on both the chain
and cassette, that can't be your problem.

Are your "5th and 6th gears" the smallest cogs? You may just
need a derailleur adjustment. Or you may be the victim of
"auto shifting."

See: sheldonbrown.comderailerOpen ↗
adjustment.html#autoshift

Art Harris