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<DIV><FONT face=Arial size=2>Thanks Roger and everyone else who =
responded.
Would it not be easier to remove the springs and then accurately weight =
the
keys.I will go back into my shop and play around with the springs and =
key
weights. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Jack Houweling</FONT></DIV>
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style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>
<A title=roger.j@sasktel.net =
href="mailto:roger.j@sasktel.net">Roger Jolly</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> Thursday, April 28, 2005 =
10:15
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: wippen support =
springs</DIV>
<DIV><FONT face=Arial size=2></FONT><FONT face=Arial
size=2></FONT><BR></DIV><FONT size=3><BR>Hi
=
Jack,<BR> &nbs=
p;
Samick is using them in the Renner action/ Knabe line of =
pianos, 3
different thickness of spring across the key board. .7mm,
.6mm, .5mm. You will hear passionate arguments for =
and
against. The keyboard should be weighted off at 67gms tapered to =
60gms
at the end of the spring section, with the springs =
disconnected.
Springs are the connected, and touch weight adjusted from 54gms in =
bass to
48gms extreme treble.<BR>I will be going to Korea next week to set up =
new
touch weight parameters.<BR><BR>I like the lowering of mass. and the =
increase
in up weight, from the use of springs. Springs should not =
support
any more than 15gms of down weight in the bass and 8-10 gms in the
treble.<BR><BR>As for making weighting more =
difficult. I
feel you can get very even weighting, and use a pre mapped or CNC =
weight off
pattern, the springs are simple to adjust once you get the hang of
it.<BR><BR>Springs have been used in the past to hide a multitude of =
sins at
the factory level. Fudging geometry and friction
problems. When used correctly, I love =
them.<BR><BR>Regards
Roger <BR>Technical Consultant<BR>Samick Music Corp. <BR><BR><BR>At =
09:36 PM
4/27/2005, you wrote:<BR></FONT>
<BLOCKQUOTE class=cite cite="" type="cite"><FONT face=arial =
size=2>I would
like to know some things about wippen support springs. Who uses =
them?
Do companies still continue to use them? Should they be =
removed?
I know they make key weighting difficult. <BR></FONT><FONT
size=3> <BR></FONT><FONT face=arial size=2>Jack
Houweling<BR></FONT><FONT =
size=3> <BR> </FONT></BLOCKQUOTE>
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<HR>
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Date:
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