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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I’m sure he has, and he’s not the only one. This topic came up not too long ago and several methods were outlined by various people. If you have keys made by various key makers around the country you will discover that the methods they use can yield quite different numbers which makes communication along these lines difficult at best. An action from one key maker I know targets something around 4.8 as his standard but that same action produced by another keymaker would be considered 5.6. Those differences are all owing to how they measure the individual levers. One of those two must be wrong, it seems to me, or at least have some other meaning.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The discussion that came up previously was which method of measuring most closely mirrors the SWR method that comes about from an analysis by weight. I’m sure DS could chime in on that, if he wanted to. Finding a system in which weight and distance methods yield the same numbers under ordinary conditions seems like something important. So far, I find the system that I use (not the hammer travel/key travel number but the individual lever measurements, to be the most consistent in that respect, though it’s not perfect. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>David Love<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>www.davidlovepianos.com<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] <b>On Behalf Of </b>Dale Erwin<br><b>Sent:</b> Wednesday, January 16, 2013 6:35 PM<br><b>To:</b> pianotech@ptg.org<br><b>Subject:</b> Re: [pianotech] Measuring Action Ratios<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;font-family:"Comic Sans MS";color:navy'>Perhaps David Stanwood could weigh in on this. No doubt he's experienced this in his massive studies of such things.<o:p></o:p></span></p><div><p class=MsoNormal style='margin-bottom:12.0pt'><b><span style='font-size:7.5pt;font-family:"Comic Sans MS";color:mediumblue'>Dale Erwin R.P.T.<br></span></b><b><span style='font-size:7.5pt;font-family:"Comic Sans MS";color:green'>Erwin's Piano Restoration Inc.</span></b><b><span style='font-size:7.5pt;font-family:"Comic Sans MS";color:mediumblue'><br></span></b><span style='font-size:10.0pt;font-family:"Courier New";color:darkgreen'><br><tt> </tt></span><span style='font-size:10.0pt;font-family:"Courier New";color:navy'><br><br></span><tt><span style='font-size:10.0pt;color:black'><o:p></o:p></span></tt></p></div><div><div id="AOLMsgPart_0_ed776801-2a7d-445d-86fe-5a2982489872"><pre style='background:white'><tt><span style='color:black'><o:p> </o:p></span></tt></pre></div></div></div></body></html>