[pianotech] Bobbling hammers and jack spring pressure?

[Ed Sutton]

Don-

Yes, very good!
Like Joseph, I was wondering if adding weight to the damper heads would allow softer damper springs in the tenor and bass.

Ed S.
  ----- Original Message ----- 
  From: Joseph Alkana 
  To: pianotech at ptg.org 
  Sent: Saturday, January 24, 2009 2:26 PM
  Subject: Re: [pianotech] Bobbling hammers and jack spring pressure?


  Don,

  Outstanding compendium of information for us.  Only thing I see absent is a comment on damper mass. I'd love to see your opinion on this and perhaps some additional information on your experience re-dampering older actions in this regard.

   

  Thank you for a most enlightening tome.

  Joseph Alkana 

   


------------------------------------------------------------------------------

  From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Don Mannino
  Sent: Saturday, January 24, 2009 9:09 AM
  To: pianotech at ptg.org
  Subject: Re: [pianotech] Bobbling hammers and jack spring pressure?

   

  As some have already found, this problem comes from the style of action design combined with the regulation of the action, especially the damper spring tension and damper timing.

   
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