[pianotech] Another Damper Puzzler

[Ken & Pat Gerler]

Paul,
I didn't note that, but I did lift a "gang" of damper without moving the damper lift tray and they were all quiet (I did "Protek" the guide rail bushing first thinking that was were the problem was located).

Ken Gerler
St. Louis, MO
  ----- Original Message ----- 
  From: paul bruesch 
  To: Ken & Pat Gerler ; pianotech at ptg.org 
  Sent: Wednesday, March 03, 2010 4:49 PM
  Subject: Re: [pianotech] Another Damper Puzzler


  Are you certain it's not guide rail bushings? That's what caused a very similar-sounding noise in a Chinese Falcone I attended to today. 

  I originally thought the tray felt, too... manually lifting the tray (eliminating pedal-thru-pitman) and still resulted in noise. Lifted as many dampers as possible at the spoons and it was still there, so bingo!

  Just a thought... 
  Paul Bruesch
  Stillwater, MN


  On Wed, Mar 3, 2010 at 4:24 PM, Ken & Pat Gerler <kenneth.gerler at prodigy.net> wrote:

    Hello all,
    I already ran this by Mark Wisner and he has never had a complaint like this --  It is RX-2G (5'10") grand.  And if everything is quiet, slowly pushing down on the damper pedal, it sounds like you are slowly running a brush across the top of a snare drum.   I have isolated it to the junction between the under lever "capstan" screw and the damper lift tray felt.  The sound is not there if the damper are held up with the sustenuto pedal.

    I put "Protek" on the felt - no change; I put teflon powder on the felt - no change.  Mark and I discussed using a leather burnisher on the head on the capstan screws (but I didn't have that with me try).

    Anyone else ever run into this?  In 40 years, it is the first time (that I can remember) I have ever run into it. I have had the problem between the key capstan and the whippen felt and been able to resolve it with the above products.

    Thanks in advance,

    Ken Gerler
    kenneth.gerler at prodigy.net


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