sticking note puzzler

[Marcel Carey]

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Jack gets caught between butt and jack stop-rail.

Marcel Carey, RPT
Sherbrooke, QC
  -----Original Message-----
  From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]On
Behalf Of Piannaman@aol.com
  Sent: September 3, 2005 9:14 AM
  To: pianotech@ptg.org
  Subject: sticking note puzzler


  Actually, the real puzzler here is why anyone would conceive and build
these pianos in the first place.  A Nordheimer, made in the USSR before the
wall came down in '89.   Calling this a PSO is being too kind.

  What surprised me in the end was that the problem was really not related
to the quality--or lack thereof--of the questionable piano in question.  It
really could have happened on any piano, though this was my first sighting
of this particular problem.

  Symptoms:  Key plays fine, then suddenly not.  Examination reveals excess
lost motion--not between the jack and hammer butt, rather between the
capstan and the wippen heel.

  What it wasn't:

  tight center
  action parts rubbing together (my first suspect, and what I focused on for
the first 20 minutes of my trip)
  Glue dropped on action  parts
  anything to do with the key itself
  sharp edges on the jack
  rough material on the butt

  As I said, it was a new one on me.  A simple, but unexpected problem.

  I'll post the answer tomorrow if there are no correct guesses.

  Dave Stahl

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