<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Ron Nossaman wrote:</DIV><BLOCKQUOTE type="cite"><BLOCKQUOTE type="cite"><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "> I'm still of the opinion that</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">most of the pitch drop we see in new pianos and rebuilds the</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">first year is from the cap crushing at the notch edge, perhaps</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">some from pinblock compression at the flange, and very little</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">of it from string stretching.</DIV></BLOCKQUOTE></BLOCKQUOTE><BR><DIV><DIV>On Apr 18, 2007, at 9:41 PM, Fred Sturm wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">My own take is that most of the pitch drop comes from the string conforming</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">to the angles it is forced to go around. Creating positive bends (pressing</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">against the string with a sliding motion) at each of those points hastens</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">pitch stability considerably, in my experience. Most new pianos don't get</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">that treatment, and so you find that high treble notes will go 100 cents</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">flat through vigorous pounding.</FONT></P> </BLOCKQUOTE></DIV><BR><DIV>The last few days has me thinking about these statements. I realize what I am about to throw into question is not about new wire, but I am curious just the same.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>If plain wire does not stretch as much as we traditionally give it credit, how would one explain the great difference in pitch change from wrapped wire to plain wire as changes in humidity affect tension change? Not just crossing from bass into low tenor, but it is just as much present when the first few strings of the low tenor are wrapped.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Jeff</DIV><BR><BR><DIV> <SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><DIV>Jeff Tanner, RPT</DIV><DIV>University of South Carolina</DIV><DIV><BR class="khtml-block-placeholder"></DIV><BR class="Apple-interchange-newline"></SPAN> </DIV><BR></BODY></HTML>