Lacquer fight! Lacquer fight!

[Erwinspiano@aol.com]

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In a message dated 5/13/2004 9:08:12 PM Pacific Standard Time, 
sbirkett@real.uwaterloo.ca writes:
and Dale:
>May I submit that the  Inner friction of felt  has always been a 
>fairly esoteric & small consideration to the discussion of hammers 
>even though it is a know factor & frankly to me personally not very 
>useful.

I disagree. I think this phenomenon is actually the contributing 
factor which will turn out to be MOST critical and absolutely 
essential to felt hammers being able to produce the sound we have 
come to expect from the piano. Without it the sound would probably be 
considered wrong and un-piano-like. I have some ideas why, and how, 
but won't speculate yet on what we may find as we will soon be 
extending the felt research project to consider hammer design and 
hammer-string interaction.

Stephen
 Hi Stephen.
   I'm more than curious about what  you're doing in the way of experiments 
in this regard. Hope there is more insight at some point.
   My above statement should be taken as stated with thefollowing 
clarification that until now, the discussion of internal friction has been known but not 
very useful so far in any discussion I've participated in. I would hope that 
some clarity on the subject would give some practical insights on how it 
relates to tonal production & hammer design or what impact this may have on hammer 
design changes if any. 
   Many have brought up the fact in various discussions but with no 
correlation as to how we should think about it or how it affects voicing or anything 
else for that matter. Know what I mean now?
    I suspect internal friction & the springiness or stiffness of the felt we 
all talk about are closely related I just don't know how to think about it. 
Yet.
  My best guess is that tension & compression alters or enhances the internal 
friction of wool felt.
   Regards, 
   Dale Erwin


Erwins Pianos Restorations 
4721 Parker Rd.
Modesto, Ca 95357
209-577-8397
Rebuilt Steinway , Mason &Hamlin Sales
www.Erwinspiano.com

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