Is there a formula that uses knuckle dimensions in figuring out AR (action ratio)?  I am not finding it in my notes, and I remember some Stanwood formula that used that knuckle dimension in one of the formulas. <BR><BR> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">From: "David Love" <davidlovepianos@comcast.net><BR>To: "'Pianotech List'" <pianotech@ptg.org><BR>Date: Wed, 4 Jul 2007 12:03:41 -0700<BR>Subject: RE: Action ratio and knuckle distance<BR><BR><U1:PLACE u2:st="on"> <META content="Microsoft Word 10 (filtered)" name=Generator> <STYLE>  </STYLE> <DIV class=Section1> <div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Actually, Stanwood’s equation of balance won’t tell you that.  The knuckle hanging is not isolated in the formula.  You have to sample and do a weigh off.  </SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </div> <DIV> <div><FONT face="Times New Roman" color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy">David Love<BR>davidlovepianos@comcast.net<BR>www.davidlovepianos.com</SPAN></FONT><FONT color=navy><SPAN style="COLOR: navy"> </SPAN></FONT></div></DIV> <div class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">-----Original Message-----<BR><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] <B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B></SPAN></FONT><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">Farrell</SPAN></FONT><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"><BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Wednesday, July 04, 2007 11:47 AM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> </SPAN></FONT><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">Pianotech List</SPAN></FONT><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"><BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: Action ratio and knuckle distance</SPAN></FONT></div> <div class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </div> <DIV> <div class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Stanwood's equations of balance would tell you that. Are you familiar with David Stanwood's work?</SPAN></FONT></div></DIV> <DIV> <div class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </div></DIV> <DIV> <div class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Terry Farrell</SPAN></FONT></div></DIV> <BLOCKQUOTE style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 4pt; PADDING-BOTTOM: 0in; MARGIN: 5pt 0in 5pt 3.75pt; BORDER-LEFT: black 1.5pt solid; PADDING-TOP: 0in; BORDER-BOTTOM: medium none"> <DIV> <div class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">----- Original Message ----- </SPAN></FONT></div></DIV> <DIV style="font-color: black"> <div class=MsoNormal style="BACKGROUND: #e4e4e4; MARGIN-LEFT: 0.5in"><B><FONT face=Arial size=2><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">From:</SPAN></FONT></B><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> <A title=madvinmryk@yahoo.com href="mailto:madvinmryk@yahoo.com">vince mrykalo</A> </SPAN></FONT></div></DIV> <DIV> <div class=MsoNormal style="MARGIN-LEFT: 0.5in"><B><FONT face=Arial size=2><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">To:</SPAN></FONT></B><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </SPAN></FONT></div></DIV> <DIV> <div class=MsoNormal style="MARGIN-LEFT: 0.5in"><B><FONT face=Arial size=2><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Sent:</SPAN></FONT></B><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Wednesday, July 04, 2007 2:03 PM</SPAN></FONT></div></DIV> <DIV> <div class=MsoNormal style="MARGIN-LEFT: 0.5in"><B><FONT face=Arial size=2><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Subject:</SPAN></FONT></B><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Action ratio and knuckle distance</SPAN></FONT></div></DIV> <DIV> <div class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </div></DIV> <BLOCKQUOTE style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; MARGIN-TOP: 5pt; PADDING-LEFT: 4pt; MARGIN-BOTTOM: 5pt; PADDING-BOTTOM: 0in; MARGIN-LEFT: 3.75pt; BORDER-LEFT: #1010ff 1.5pt solid; PADDING-TOP: 0in; BORDER-BOTTOM: medium none"> <DIV> <div class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">How do you figure out the change that would occur in ACTION RATIO (AR) if everything remains constant (strike weight, front weight,wippen balance weight, and balance weight) except the knuckle is changed from 16.2 mm to 17mm, on paper, without actually trying it out on the action?</SPAN></FONT></div></DIV></BLOCKQUOTE> <div class=MsoNormal style="MARGIN-BOTTOM: 12pt; MARGIN-LEFT: 0.5in; MARGIN-RIGHT: 0in"><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </div> <DIV id=RTEContent> <DIV id=RTEContent> <DIV> <DIV> <div class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">Vince Mrykalo RPT MPT</SPAN></FONT></div></DIV> <DIV> <div class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman" color=red size=3><SPAN style="FONT-SIZE: 12pt; COLOR: red">University of Utah</SPAN></FONT></div></DIV> <DIV> <div class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </div></DIV> <DIV> </DIV></DIV></DIV></DIV></BLOCKQUOTE></DIV></BLOCKQUOTE></U1:PLACE><BR><BR><DIV id=RTEContent> <DIV id=RTEContent> <DIV> <DIV>Vince Mrykalo RPT MPT</DIV> <DIV><FONT color=#ff0000>University of Utah</FONT></DIV> <DIV><FONT color=#ff0000></FONT> </DIV> <DIV><EM><STRONG>"Minél több a változás, annál nagyobb az állandoság"</STRONG></EM></DIV> <DIV> </DIV> <DIV><EM><STRONG>The more I learn, the less I know.</STRONG></EM></DIV> <DIV> </DIV> <DIV><A href="http://www.mrykalopiano.com"><STRONG>www.mrykalopiano.com</STRONG></A></DIV></DIV></DIV></DIV><p>  <hr size=1>Building a website is a piece of cake. <br>Yahoo! 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