jack not returning on high treble

[Michelle Smith]

Hi everyone.  I briefly worked on a drop action piano today (the type with
capstans and inverted stickers instead of lifter wires and grommets) that
the jacks would not return after the initial strike.  We see it every day,
right?  Well, I did a multitude of tests to see if it was a friction issue.
It wasn't.  I didn't have a lot of time to make adjustments (I was there to
work on a different piano) but here are two facts to ponder.  First, it was
ONLY the notes that do not have dampers (the extreme treble).  Second, the
dip on these notes was slightly less than the rest of the piano, otherwise,
all measurements were the same.

 

Thanks for helping the eternal newbie.  =)

 

Michelle Smith

Bastrop, Texas

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