Sticking keys

[piannaman at aol.com]

  I think John's suggestions are correct. It wouldn't be the damper lever felt, because you take it out of play by using the pedal. My suspicion is tight front rail bushings. Easy way to check this is to lift the wippen up off of the capstan with one hand, and rock the key back and forth with the other to check for tightness. Compare the sluggish notes' keys with the keys of good notes to see if there is a difference.
 
 Next choices would be hammer flange center, jack center, or wippen center.
    Dave Stahl, RPT
 
 Dave Stahl Piano Service
 650-224-3560
 dstahlpiano at sbcglobal.net
 http://dstahlpiano.net/
 
 
    -----Original Message-----
 From: jrpiano at win.eastlink.ca
 To: pianotech at ptg.org
 Sent: Fri, 4 May 2007 10:30 AM
 Subject: Re: Sticking keys
 
  The fact that it only happens when the damper pedal is used, suggests higher friction for those notes. When the damper pedal is used, the damper spring 'assistance' is removed. So it could be the keys need eased, or an action centre is tight, and needs to be replaced, or lubricated. If the notes are next to each other, be sure and check nothing is between the keys. John M. Ross
 Windsor, Nova Scotia, Canada
 jrpiano at win.eastlink.ca  ----- Original Message -----  From: dbpowell1 at juno.com  To: pianotech at ptg.org  Sent: Friday, May 04, 2007 1:56 PM Subject: Sticking keys 
  I have a customer that has a Yamaha console. Two or three notes stick only when the damper pedal is used. I have checked the damper lever felt for indentions and there OK. Briddle strap wire is clear. Key dip is the same as other keys. I checked a few other things that another Tech suggested but nothing seems to stop the sticking. Any ideas will be appreciated. Dick Powell     
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