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<DIV class=OutlookMessageHeader dir=ltr align=left><FONT =
face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> =
pianotech-bounces@ptg.org
[mailto:pianotech-bounces@ptg.org]<B>On Behalf Of </B>Michael
Spalding<BR><B>Sent:</B> April 23, 2004 3:57 AM<BR><B>To:</B> =
oleg-i@noos.fr,
Pianotech<BR><B>Subject:</B> RE: Resilience and energy transfer, was
Acetone<BR><BR></FONT></DIV>
<DIV><FONT face="MS Sans Serif">Isaac,</FONT></DIV>
<DIV><FONT face="MS Sans Serif"></FONT> </DIV>
<DIV><FONT face="MS Sans Serif"><SPAN =
class=718481117-23042004><FONT
face="Comic Sans MS" color=#000080 =
size=3> .... </FONT></SPAN>Heavy
hammers transfer more energy to strings than light =
hammers.</FONT></DIV>
<DIV><FONT face="MS Sans Serif"></FONT> </DIV>
<DIV><FONT face="MS Sans Serif">Mike</FONT></DIV>
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<DIV dir=ltr><FONT face="Comic Sans MS" color=#000080 =
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class=718481117-23042004></SPAN></FONT> </DIV>
<DIV dir=ltr><FONT face="Comic Sans MS" color=#000080 =
size=3><SPAN
class=718481117-23042004>This is broad generalization that is true =
only if the
velocity of the two hammers stays the same, or at least approximately =
the same,
for a given key strike. They do not. When a relatively light hammer is =
replaced
with a heavier hammer and the key is struck with a given amount of force =
the
velocity of the heavier hammer will be less. How much less is a function =
of the
specific action compliance and transfer efficiency.</SPAN></FONT></DIV>
<DIV dir=ltr><FONT face="Comic Sans MS" color=#000080 =
size=3><SPAN
class=718481117-23042004></SPAN></FONT> </DIV>
<DIV dir=ltr><FONT face="Comic Sans MS" color=#000080 =
size=3><SPAN
class=718481117-23042004>Del</SPAN></FONT></DIV></BODY></HTML>