"Sticking Keys"

[piannaman at aol.com]

Hi Andrew,
 
Check the postion of the letoff button rail.  I've had several newer pianos at the lower end of the price spectrum that had the letoff rail too far forward(toward the jacks).  The result is that the jacks get hung up between the butt and the rail with no place to go.  It usually happened on hard blows, but it was intermittent, and extremely annoying!
 
You'll have to regulate letoff if you do end up moving the rail back. 
 
Dave Stahl

Dave Stahl Piano Service
650-224-3560
dstahlpiano at sbcglobal.net
http://dstahlpiano.net/




 
 
-----Original Message-----
From: anrebe at sbcglobal.net
To: pianotech at ptg.org
Sent: Sun, 3 Dec 2006 10:53 AM
Subject: "Sticking Keys"


I had a chinese piano come in, a little upright with a few problems: 
 
  bass strings buzzing, removed loose keypins from bridge: still buzzing 
  rerouted bass string through its own bridge pins: fixed 
 
  occasional key sticking hard to reproduce: figured out how to reproduce predictably 
  try rapid cycling of key without fully lifting up, allows check to loosen and hammer to fall back without jack going under then jack catches on buckskin just back of felt cushion and the only effective release is the lost motion inducer (soft) pedal 
Solutions? 
 
Andrew 
 
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