Mason AA key end felts

[Tom Sivak]

The reason I decided to replace the key end felts is because they were so unevenly worn that after regulating an even damper lift from the pedal, I found that some keys lifted the damper at the half way point, and others lifted immediately.  The key end felts had huge dents in them making it impossible to regulate properly. 
   
  So, there's no way to tell, really.
   
  Tom Sivak

David Ilvedson <ilvey at sbcglobal.net> wrote:
  Did the bass keys raise the dampers later than the rest?...;-]

David Ilvedson, RPT
Pacifica, CA 94044


    
---------------------------------
  Original message
From: "Tom Sivak" 
To: pianotech 

Received: 7/31/2006 4:12:11 PM
Subject: Mason AA key end felts

  List
   
  In the process of rebuilding a Mason and Hamlin AA, I now have to replace the key end felts.  As I was removing the old ones, I noticed that the bass section had thinner felts than the rest of the piano.  I never noticed this before on any other piano, but then, I didn't really notice it on this piano until I started razorblading them off.  
   
  Is this standard procedure?  I know the strings are a higher in the bass section, but the blow distance and the key dip is the same, so what purpose could there be behind having thinner key end felts in that section?  
   
  It looks to me as if they are original felts.  I wouldn't be replacing them if they weren't so worn out to begin with.  (Big dents in the felt; some bigger than others; I was unable to get an even damper lift from the keys even though they lifted evenly from the damper lever.)
   
  Thanks in advance,
  Tom Sivak
  Chicago


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