damper felt sizes

[Willem Blees]

Sometimes I think there is no rhyme or reason why some dampers work on some strings, and the same felt doesn't work on other strings. 
Put on the S&S felts and see if they work. If they dont' put on the other ones. 


Willem (Wim) Blees, RPT
Piano Tuner/Technician
Honolulu, HI
Author of 
The Business of Piano Tuning
available from Potter Press
www.pianotuning.com


-----Original Message-----
From: Bob Hull <hullfam5 at yahoo.com>
To: Pianotech List <pianotech at ptg.org>
Sent: Thu, 1 Nov 2007 5:15 am
Subject: damper felt sizes



I'm putting new damper felt on a S&S M that we just put a new block in and 
restrung.

I have a set a grand damper felts from Pianotek Tokiwa and a set from Steinway 
for an M.  The Steinway dampers for the trichord wedges are really short in 
length (similar to another M sitting here waiting to be done of same vintage) 
and shorter in heigth.  The ones we took off which I believe were original were 
taller and longer.    

The Tokiwa trichords are longer.  I have a 3rd M sitting here that Ron N. did 
and is awaiting refinishing and it has the longer felts.  These dampers are 
working very well.  I'm not sure if they are Tokiwa or?

How important is the pressure p.s.i. on the string for effective damping?  Which 
felt sets do you prefer?  

Bob Hull

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