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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'>They do? The change in distance from the struts to the bridge when I let off tension corresponded pretty well with the change in downbearing. In other words, the soundboard moved up, the plate didn’t. <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><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></div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><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>Encore Pianos<br><b>Sent:</b> Thursday, June 23, 2011 3:06 PM<br><b>To:</b> pianotech@ptg.org<br><b>Subject:</b> Re: [pianotech] Soundboard Analysis<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:black'>Now, that’s an explanation further worth exploring. The plate struts certainly rise when tension is added. Some struts have nose bolts to restrain that upward movement, others don’t. Next time you teardown a piano David, measure that upward or downward movement at the same time you are taking your bearing and crown readings. I think it is a better explaination than the one I offered.<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:black'>Will Truitt<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p><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>Albert Picknell<br><b>Sent:</b> Thursday, June 23, 2011 5:21 PM<br><b>To:</b> pianotech@ptg.org<br><b>Subject:</b> Re: [pianotech] Soundboard Analysis<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0><tr><td valign=top style='padding:0in 0in 0in 0in'><div><p class=MsoNormal><span style='color:black'>--- On <b>Thu, 6/23/11, David Love <i><<a href="mailto:davidlovepianos@comcast.net">davidlovepianos@comcast.net</a>></i></b> wrote:</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='color:#1F497D'>When I took pressure off the board by letting down the tension and saw an increase in bearing (soundboard rise) and a change in the distance between the bridge and the struts (which I didn’t include below), and then crawled under to check the crown it was still not positive.</span><br><br>***************<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>The plate drops when you let off tension. Because the string plane is below the plate struts, the struts rise when you put tension on the strings, and drop when you release that tension. It's like stringing/destringing a bow. This would at least partially account for the increase in bearing, as well as the decrease in the distance between the bridge and the plate struts.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Cheers,<o:p></o:p></p></div><div><p class=MsoNormal>Bert<o:p></o:p></p></div></td></tr></table><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p></div></body></html>