<!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 6.00.2800.1400" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><SPAN class=002345307-06032004><FONT face=Arial color=#0000ff = size=2>Hi Vincent,</FONT></SPAN></DIV> <DIV><SPAN class=002345307-06032004><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=002345307-06032004><FONT face=Arial color=#0000ff = size=2>Congratulations for your assembly line. I've seen on your site = that you are equipped to rib soundboards. However, your question and the way it = is expressed show that you have a little understanding of the grand = soundboard, and indeed building a grand is a  different process than a vertical.</FONT></SPAN></DIV> <DIV><SPAN class=002345307-06032004><FONT face=Arial color=#0000ff = size=2>Have you control on the wood moisture at ribbing time ? = what kind of ribbing method do you use (curved, or straight)</FONT></SPAN></DIV> <DIV><SPAN class=002345307-06032004><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=002345307-06032004><FONT face=Arial color=#0000ff = size=2>As the primarily function of Down Bearing is to stiffen the assembly without = adding weight, there is no "best down bearing map" at my (little) knowledge. </FONT></SPAN></DIV> <DIV><SPAN class=002345307-06032004><FONT face=Arial color=#0000ff = size=2>The last book from Klaus Fenner is making interesting comments on the = different soundboard shapes and construction modes, if it can help = .</FONT></SPAN></DIV> <DIV><SPAN class=002345307-06032004></SPAN><FONT face=Tahoma><FONT = size=2><SPAN class=002345307-06032004><FONT face=Arial color=#0000ff> </FONT></SPAN></FONT></FONT></DIV> <DIV><FONT><FONT face=Arial color=#0000ff size=2><SPAN class=002345307-06032004>I believe you should ask the intervention of = people that have studied those matters, and have some experience in it = . Most probably Stephen Paulello should be interested in providing expertise, = you may get in touch with him at  <A href="mailto:!stephen-paulello@club-internet.fr">!stephen-paulello@club= -internet.fr</A> (without the " !")? I have transmitted your mail to = him.</SPAN></FONT></FONT></DIV> <DIV><FONT><FONT face=Arial color=#0000ff size=2><SPAN class=002345307-06032004></SPAN></FONT></FONT> </DIV> <DIV><FONT><FONT face=Arial color=#0000ff size=2><SPAN class=002345307-06032004>Have you sound samples (music) of your = vertical pianos models ? Where are the keyboards from = ?</SPAN></FONT></FONT></DIV> <DIV><FONT><FONT face=Arial color=#0000ff size=2><SPAN class=002345307-06032004></SPAN></FONT></FONT> </DIV> <DIV><FONT><FONT face=Arial color=#0000ff size=2><SPAN class=002345307-06032004>I hope you'll get some answer from the ones = that knows better than me on that list, however, may be you should consider = presenting yourself a tad before that, like in an urban conversation ! </SPAN></FONT></FONT></DIV> <DIV><FONT><FONT face=Arial color=#0000ff size=2><SPAN class=002345307-06032004></SPAN></FONT></FONT> </DIV> <DIV><FONT><FONT face=Arial color=#0000ff size=2><SPAN class=002345307-06032004>I was a little surprised at first with your = question, but , after all, who don't ask nothing have no chance to receive .</SPAN></FONT></FONT></DIV> <DIV><FONT><FONT face=Arial color=#0000ff size=2><SPAN class=002345307-06032004></SPAN></FONT></FONT> </DIV> <DIV><FONT><FONT face=Arial color=#0000ff size=2><SPAN class=002345307-06032004>Best regards. and wishes for your projects - = Are you planning to come by at the AFARP congress and present your instruments ?</SPAN></FONT></FONT></DIV> <DIV><FONT><FONT face=Arial color=#0000ff size=2><SPAN class=002345307-06032004></SPAN></FONT></FONT> </DIV> <DIV><FONT><FONT face=Arial color=#0000ff size=2><SPAN class=002345307-06032004></SPAN></FONT></FONT> </DIV> <DIV><FONT><FONT face=Arial color=#0000ff size=2><SPAN class=002345307-06032004>Isaac OLEG</SPAN></FONT></FONT></DIV> <DIV><FONT><FONT face=Arial color=#0000ff size=2><SPAN class=002345307-06032004></SPAN></FONT></FONT> </DIV> <DIV><FONT><FONT face=Arial color=#0000ff size=2><SPAN = class=002345307-06032004> <STYLE>  </STYLE> <TABLE cellSpacing=0 cellPadding=0 width=320 border=0> <TBODY> <TR> <TD class=noro>Pianotech<BR><B>Isaac OLEG</B><BR><I>accordeur - = reparateur - concert</I><BR><A class=psl href="mailto:oleg-i@noos.fr">oleg-i@noos.fr</A><BR>19 rue Jules Ferry<BR>94400 VITRY sur SEINE<BR>tel: 033 01 47 18 06 98<BR>fax: = 33 01 47 18 06 90<BR>mobile: 033 06 60 42 58 77 </TD> <TD class=tiny> </TD></TD></TR> <TR> <TD colSpan=2><BR><A class=brand href="http://www.plaxo.com/signature"><I>Powered by Plaxo ... = Want a signature like this? </I></A></TD></TR></TBODY></TABLE></SPAN></FONT></FONT></DIV> <BLOCKQUOTE dir=ltr style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px = solid; MARGIN-RIGHT: 0px"> <DIV class=OutlookMessageHeader dir=ltr align=left><FONT = face=Tahoma><FONT size=2><SPAN class=002345307-06032004> </SPAN>-----Message d'origine-----<BR><B>De :</B> pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]<B>De la part de</B> PIANOS CHAVANNE<BR><B>Envoyé :</B> vendredi 5 mars 2004 = 09:22<BR><B>À :</B> pianotech@ptg.org<BR><B>Objet :</B> Best soudboard shape<BR><BR></DIV></FONT></FONT></BLOCKQUOTE> <DIV dir=ltr><FONT face=Arial size=2> <DIV><FONT face=Arial size=2><FONT face="Times New Roman" = size=3>Hello,<BR>I am a french piano upright manufacturer and I would like to make now = a<BR>grand piano 188 cm lenght.<BR><BR>I am interested to know what's the best = shape to apply to grand piano<BR>soundboard when gluing ribs in bed tool, is it = like a cylinder shape where<BR>bridge is on the top, or may be a sphere shape = like upright where the top is<BR>on the middle of bridge ? or something other = ?<BR>Also, what's the best curve amplitude in this case ??<BR>and for to = finish, the best downbearing map from note No 1 to 88 ??<BR>.<BR>Many thanks for = your help..           &= nbsp;    Vincent,</FONT><BR></FONT></DIV></FONT></DIV></BODY></HTML>