Re: Chain skipping under load(for no obvious reason)

On Mar 31, 3:04 am, dabac <dabac.374...@no-
mx.forums.cyclingforums.com> wrote:
Hi guys,
I built up a wheel around an old Sachs hub this winter. The cassette
had been used before, but still looked good with no obvious changes in
tooth shape. Anyhow, since this one is from way before shifting ramps
and all that I figured I'd flip the sprockets over to be really certain
that it would work well with the new chain I was putting on.
Well, it isn't. In the stand it runs as smooth as you'd ever wish for,
but when I try riding it I get skipping on both smallest AND largest
sprocket, and I just can't figure out why.

Teeth definitely appear symmetrical, the flipped-over side hasn't been
run before, there are no stiff links in the chain, I'm not
cross-chaining, so what's wrong with it?

Could a faulty chain length affect BOTH smallest and largets cog
performance while leaving the middle unaffected?

Can worn tension and jockey pulleys have anything to do with it?

Sounds weird, but make sure your cable guide under the BB is well
greased. Sometimes cable sticking can give you a problem that seems
like a bad cog/chain combo. Other problems may be: (1) bent
derailleur hanger, (2) bad derailleur (unlikely), (3) unseen stiff
link, (4) unseen wear on cogs, and (5) bad juju. Make sure you did
not sin in a past life. I doubt it is a pulley issue. That would
would not cause skipping, IMO. -- Jay Beattie.
.

Relevant Pages

  • Re: Chain skipping under load(for no obvious reason)
    ... that it would work well with the new chain I was putting on. ... run before, there are no stiff links in the chain, I'm not ... derailleur hanger, bad derailleur, unseen stiff ...
    (rec.bicycles.tech)
  • Re: Determining chain length?
    ... This is the length your chain should be. ... chain striking it and causing premature wear or 'accident'.- Hide quoted text - ... Have you ever really seen a bike set up so that the chain actually ... "You will rip your derailleur hanger off " started me off, ...
    (rec.bicycles.tech)