Damnper

[David Chadwick]

DamnperAlan, I had a similar issue with a Boston UP118. After several service calls I found that there was just a speck of glue squeeze where the felt was glued onto the damper block. It was in the Bass section and the angle of the dampers was just enough to allow it to rub against the neighbor only on very light release of the whippen. Hope this helps. 

David C. 
  ----- Original Message ----- 
  From: Alan Barnard 
  To: pianotech at ptg.org 
  Sent: Friday, February 01, 2008 1:23 PM
  Subject: Damnper


  Nice little Kawai CE-7 in like-new condition, all clean and well regulated. Customer complains of a key (G2) that sticks. 

  1. It does, occasionally, stick but only if you hold down the sustain pedal and then play the note. 
  2. The key releases/resets when you lift the sustain pedal.
  3. It is NOT the keystick or rail bushings. You can remove the keystick and still make it fail just lifting the whippen--but only if the sustain pedal is down. So ...
  4. It is not a capstan height issue, either.
  5. Examined the damper felt and the spoon, they are like new. Flanges seem plenty mobile.
  6. The damper, itself, does not seem to interfere with its neighbors; nor does it lift any earlier or later.

  Actually, she would hardly have noticed it, since it only sticks when you theoretically want the note sounding, anyway; but she overuses the sustain mightily. (Chord change? What chord change?)

  Any ideas would be appreciated 

  Alan Barnard
  Stumped in Salem, MO
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