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<DIV><FONT size=2>Sorry Del, it was Ron Overs actually. I'm =
still not sure
what hysteresis is exactly and why a leaf spring might have a problem =
compared
to a coil spring? Ron, if you're listening?</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>David Love</FONT></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>
<A title=pianobuilders@olynet.com
href="mailto:pianobuilders@olynet.com">Delwin D Fandrich</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A =
title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> February 10, 2002 7:27 =
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Soundboard springs =
and
hysterisis: question for Del F.</DIV>
<DIV><BR></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000080 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>
<A title=davidlovepianos@earthlink.net
href="mailto:davidlovepianos@earthlink.net">David Love</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A =
title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">Pianotech</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> February 10, 2002 11:14 =
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Soundboard springs =
and
hysterisis: question for Del F.</DIV>
<DIV><BR></DIV>
<DIV><FONT size=2>Del:</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Been reading the past posts on soundboard =
springs and have
come to your comments that a leaf spring arrangement would be =
subject to
"hysterisis" and would not be as effective. Could you define =
what you
mean by that term as it applies here?</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Thanks</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>David love</FONT></DIV></BLOCKQUOTE>
<DIV dir=ltr><FONT size=2></FONT> </DIV>
<DIV dir=ltr><FONT size=2>
<DIV><FONT color=#000080>Did I say that? Surely not. </FONT></DIV>
<DIV><FONT color=#000080></FONT> </DIV>
<DIV><FONT color=#000080>Hysteresis would only be a problem if leaf =
springs of
multiple layers were used. Then the breakaway friction between the =
various
leaves might cause a response problem. (Bearing in mind that I've not =
actually
tried this.) Otherwise, with a single leaf, I don't see the =
problem. And
I can't think of any reason to use a multiple leaf spring arrangement =
for this
application. Using a single leaf spring it should be relatively easy =
to figure
out a virtually frictionless coupling between a leaf spring and the
soundboard. Assuming, of course, that one really wanted to use a leaf
spring.</FONT></DIV>
<DIV><FONT color=#000080></FONT> </DIV>
<DIV><FONT
color=#000080>Del</FONT></DIV></FONT></DIV></BLOCKQUOTE></BODY></HTML>