<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <META content="MSHTML 6.00.6000.16705" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY style="WORD-WRAP: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space" bgColor=#ffffff> <DIV><FONT face=Arial size=2>zzzzzzzzzzzzactly.</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=tompiano@bellsouth.net href="mailto:tompiano@bellsouth.net">Tom Servinsky</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">Pianotech List</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, October 01, 2008 5:10 AM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: What's all this I hear about Inertia ?</DIV> <DIV><BR></DIV> <DIV>And assist springs, even the adjustable,good kind, have never felt as satisfying to me as an action with the ideal hammer weight, action ratio, balance weight, and front weights, and regulated well: by feel, by the "sweet spot," where the action feels its most "buttery" and responsive.</DIV> <DIV> </DIV> <DIV><FONT face="Century Schoolbook" size=2>Amen, David. Bingo! My thoughts exactly.</FONT></DIV> <DIV><FONT face="Century Schoolbook" size=2>Tom Servinsky</FONT></DIV> <BLOCKQUOTE 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=david@davidandersenpianos.com href="mailto:david@davidandersenpianos.com">David Andersen</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">Pianotech List</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, September 30, 2008 7:01 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: What's all this I hear about Inertia ?</DIV> <DIV><BR></DIV><BR> <DIV> <DIV>On Sep 30, 2008, at 8:46 AM, Fenton Murray wrote:</DIV><BR class=Apple-interchange-newline> <BLOCKQUOTE type="cite"> <P style="MARGIN: 0px"><FONT style="FONT: 16px Helvetica" face=Helvetica size=5>If you have heavy hammers, or a high action ratio, or even worse both, you will start to end up with too much lead in the key unless you are using assist springs.</FONT></P></BLOCKQUOTE>And assist springs, even the adjustable,good kind, have never felt as satisfying to me as an action with the ideal hammer weight, action ratio, balance weight, and front weights, and regulated well: by feel, by the "sweet spot," where the action feels its most "buttery" and responsive.</DIV> <DIV>On a well-made action that sweet spot falls within very narrow parameters of distance and weight. Here are some of my ideal parameters:</DIV> <DIV>-action ratio: 5.5-5.7</DIV> <DIV>-balance weight: 37-39</DIV> <DIV>-blow distance: 46mm MINIMUM - 48mm</DIV> <DIV>-key travel: 10.2-10.5mm</DIV> <DIV> <BLOCKQUOTE type="cite"> <P style="MARGIN: 0px"><FONT style="FONT: 16px Helvetica" face=Helvetica size=5>These actions are not going to 'feel' right even though they may have great numbers. I don't know any way too measure this easily with weights at the key board, but<SPAN class=Apple-style-span style="FONT-SIZE: 19px"> I have become pretty good at feeling it through all the great mistakes I've made</SPAN>.</FONT></P></BLOCKQUOTE>As Erwin says, zzzzactly. You get to a point where your hands, your ears, your feeling sense, your eyes, your perceptions, are the vast and fundamental basis of any diagnosis. It's a quick, intuitive process, ratified and focused by testing with the Stanwood protocols, and it works like magic. When the change is made the client is ecstatic.</DIV> <DIV>David A. <BR> <BLOCKQUOTE type="cite"> <P style="MARGIN: 0px"><FONT style="FONT: 16px Helvetica" face=Helvetica size=5>Respectfully,</FONT></P> <P style="MARGIN: 0px"><FONT style="FONT: 16px Helvetica" face=Helvetica size=5>Fenton</FONT></P></BLOCKQUOTE></DIV><BR></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>