[pianotech] Damping issue

[Paul McCloud]

Hi Duane:
	Are these shortened dampers next to the strut at the break?  Are the
strings level so that one is ringing (pluck test). 
	 Often trichord felt has "legs" that are of different widths.  Since the
manufacturer is cutting the felt from one strip, all the felts have the
same problem.  So, many notes have a ringing problem, just like yours.
	I worked on a no-name grand yesterday that had a ringing note.  It worked
ok until you played the note softly.  The strings weren't level, and the
damper "legs" were of different widths.  I leveled the strings and squeezed
two of the strings together so the dampers worked properly.  Better fix
would have been to replace the damper felt, or cut the felt and put a
string to widen the stance of the felt "legs".  
	Good luck.
	Paul McCloud
	San Diego 
	


> [Original Message]
> From: Duane McGuire <pianoman at duanemcguire.com>
> To: <pianotech at ptg.org>
> Date: 07/19/2011 8:48:02 AM
> Subject: [pianotech] Damping issue
>
> I'm working on a 4' 8" Pearl River.
>
> F#3 and G#3 seem to dampen the fundamental and lower partials  well.
> For each of these notes the 5th partial rings with many seconds of
> sustain after the damper falls.   Interestingly, it is the right
> string in each of these that is sounding the 5th partial so clearly.
> These are split dampers.
>
> I don't know if this is a "damper problem", or if I'm looking at
> something else.  Other notes in the section dampen well.
>
> Any suggestions would be appreciated!
>
> -- 
> Duane McGuire
> 801-830-5858
> http://www.mcguirepiano.com