damper modification help

[Farrell]

Bill Spurlock also has an excellent paper on vertical damper replacement. It includes evaluation techniques for placement, and excellent new design examples. He suggests using longer damper in general. I have followed his guidelines on several uprights and had excellent results. I always make my own dampers from scratch now.

Terry Farrell
  
----- Original Message ----- 
From: "Delwin D Fandrich" <pianobuilders@olynet.com>
To: "Pianotech" <pianotech@ptg.org>
Sent: Wednesday, December 04, 2002 11:42 AM
Subject: Re: damper modification help


> 
> ----- Original Message -----
> From: <Tvak@aol.com>
> To: <pianotech@ptg.org>
> Sent: December 04, 2002 6:06 AM
> Subject: damper modification help
> 
> 
> > I replaced the dampers on a big old upright piano and now find that the
> new
> > dampers are not doing their job very well.  The monochord strings all have
> a
> > ringing third partial (octave+5th).  They are seated and regulated
> properly.
> 
> 
> A not uncommon problem. See:
> 
> - Dampers-Why Are They So Darn Much Trouble?  The Piano Technicians Journal,
> December, 1995
> 
> Del
> 
> 
> 
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives