<HEAD><TITLE>Message</TITLE> <META content="MSHTML 6.00.2900.2604" name=GENERATOR></HEAD> <BODY> <DIV>Oh, I only mentioned it because it surprised me since youse guys that are rebuilding gurus seem to discuss the subject so much and from so many angles.</DIV> <DIV> </DIV> <DIV>What about that stability thing? Do you think high crowned pianos are more sensitive to humidity, staying-in-tune-wise?<BR></DIV> <DIV>Alan R. Barnard</DIV> <DIV>Salem, MO<BR><BR>-----Original Message----- <BR>From: Terry <TERRY@FARRELLPIANO.COM><BR>Sent: Mar 24, 2005 7:39 PM <BR>To: Pianotech <PIANOTECH@PTG.ORG><BR>Subject: Re: Steinway with reverse crown <BR><BR></DIV><ZZZHTML><ZZZHEAD><ZZZMETA content="text/html; charset=iso-8859-1" http-equiv="Content-Type"><ZZZMETA content="MSHTML 6.00.2800.1491" name="GENERATOR"> <STYLE>@font-face { font-family: Tahoma; } @page Section1 {size: 8.5in 11.0in; margin: 1.0in 1.25in 1.0in 1.25in; } P.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman" } LI.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman" } DIV.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman" } A:link { COLOR: blue; TEXT-DECORATION: underline } SPAN.MsoHyperlink { COLOR: blue; TEXT-DECORATION: underline } A:visited { COLOR: purple; TEXT-DECORATION: underline } SPAN.MsoHyperlinkFollowed { COLOR: purple; TEXT-DECORATION: underline } SPAN.EmailStyle18 { COLOR: navy; FONT-FAMILY: Arial } DIV.Section1 { page: Section1 } </STYLE> </ZZZHEAD><ZZZBODY lang=EN-US bgColor="#ffffff" link="blue" vLink="purple"> <DIV><FONT face=Arial>Okay. I agree. I'm not sure I understand the issue you seem to be trying to raise.</FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>Some belly designs incorporate soundboards that have a relatively small amount of crown. By the time you string it up with some downbearing, many of them will exhibit little if any crown at tension - that is no problem, within the constraints of that design type. That is why you always want to look at downbearing and crown to evaluate whether a soundboard is functioning as well as the design will permit.</FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>I wouldn't feel comfortable building a board like that, but many do.</FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>But a board with a quarter-inch negative crown and tons to downbearing is a no-go in my mind.</FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>Terry Farrell</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"><SPAN class=843503514-24032005><FONT face=Arial size=3>At the California Conference, I attended a grand piano maintenance class sponsored and run by Steinway techs. I was surprised when they made a specific point of telling us that a piano under tension does not have to exhibit any crown, yet still sound and work just fine. </FONT></SPAN></DIV> <DIV><SPAN class=843503514-24032005><FONT face=Arial></FONT></SPAN> </DIV> <DIV><SPAN class=843503514-24032005><FONT face=Arial>This wasn't in response to any questions, it was a topic on their agenda!</FONT></SPAN></DIV> <DIV><SPAN class=843503514-24032005><FONT face=Arial></FONT></SPAN> </DIV> <DIV><SPAN class=843503514-24032005><FONT face=Arial>They also said that it might explain why some pianos are so reactive to seasonal changes while others, e.g. Acrosonic, tend to be more stable.</FONT></SPAN></DIV> <DIV><SPAN class=843503514-24032005><FONT face=Arial></FONT></SPAN> </DIV> <DIV><SPAN class=843503514-24032005><FONT face=Arial>Hmmmm ....</FONT></SPAN></DIV> <DIV> </DIV> <DIV align=left><FONT face=Arial size=2>Alan R. Barnard</FONT></DIV> <DIV align=left><FONT face=Arial size=2>Salem, MO</FONT></DIV></BLOCKQUOTE></ZZZBODY></ZZZHTML></BODY>