Lubed the pulleys and the pivots.  Chirp is gone.  Thanks!

D.G.

On Feb 12, 10:20 am, "Darin G." <dbg...@mac.com> wrote:
> Will address the pulley wheels today and report back!
>
> D.G.
>
> On Feb 12, 2:31 am, ascpgh <asc....@gmail.com> wrote:
>
>
>
>
>
>
>
> > I'm going with the pulley wheels. They have to rotate for a brief
> > moment under a lateral load before the chain moves to the selected
> > cog. Wear and/or lack of lube can create the situation for thatchirp.
> > On a group ride last summer a rider had an intermittent suchchirpand
> > disagreed on the pulley wheel, insisting it was deep trouble in his
> > bottom shell. I pulled alongside him on his right and with his
> > permission,squirted his pulley wheels with my water bottle quenching
> > the chirps for the last six or eight miles.
>
> > ANDY
> > Pittsburgh
>
> > On Feb 11, 2:32 pm, "Darin G." <dbg...@mac.com> wrote:
>
> > > Here's a puzzler in the spirit of "Car Talk" for the mechanical gurus
> > > on the post.  I get a very loudchirp(like a starling) when I shift
> > > into the smaller cogs, and a continuous loudchirp(like a flock of
> > > starlings) on the second smallest cog .  Nochirpon the larger ones
> > > or the smallest.  I can't replicate it in my repair stand, but it
> > > definitely seems to emanate from the smaller cluster.  Cleaned and
> > > lubed chain to no avail.

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