<HTML style="FONT-SIZE: x-small; FONT-FAMILY: MS Sans Serif"><HEAD> <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <META content="MSHTML 6.00.2900.3020" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY id=role_body style="FONT-SIZE: 10pt; COLOR: #000000; FONT-FAMILY: Arial" bottomMargin=7 bgColor=#ffffff leftMargin=7 topMargin=7 rightMargin=7> <DIV> <DIV><FONT face="MS Sans Serif">Stéphane, et al</FONT></DIV> <DIV><FONT face="MS Sans Serif"></FONT> </DIV> <DIV><FONT face="MS Sans Serif">(I apologize for messing up your name on my last post.  I have Chinese translation software on my computer, and I sometimes get unexpected characters when I use unusual characters in my text.)</FONT></DIV> <DIV><FONT face="MS Sans Serif"></FONT> </DIV> <DIV><FONT face="MS Sans Serif">I made reference to separate treble bridges in my response to Terry's post.  It was tongue-in-cheek, but it is a logical thought to consider having separate bridges.  In my experience, I have seem some weakness in tone and sustain in cases where the treble bridge is cut too deeply for plate bar clearance.  My guess is that this problem would be much worse if the treble bridge actually separated into two bridges.  It also introduces end-of-bridge problems that would not otherwise exist.  Part of the thinking behind vertically laminated bridges is to provide continuity of grain along the entire length of the bridge, and thereby more effect transfer and dissemination of the strings energy to the soundboard.  Separating the bridge would interrupt this effect.</FONT></DIV> <DIV><FONT face="MS Sans Serif"></FONT> </DIV> <DIV> </DIV> <DIV> <DIV>Frank Emerson</DIV> <DIV><A href="mailto:pianoguru@earthlink.net">pianoguru@earthlink.net</A></DIV> <DIV> </DIV></DIV></DIV> <DIV> </DIV> <BLOCKQUOTE style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid"> <DIV style="FONT: 10pt Arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=collin.s@skynet.be href="mailto:collin.s@skynet.be">Stéphane Collin</A> </DIV> <DIV style="FONT: 10pt arial"><B>To: </B><A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">Pianotech List</A></DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> 12/19/2006 11:28:22 AM </DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Bridge Doglegs, was: Spreadsheet info / Jason Kanter</DIV> <DIV><BR></DIV><FONT size=2> <DIV>Hi all doglegs busters.</DIV> <DIV> </DIV> <DIV>I had a brilliant idea concerning bridge doglegs.</DIV> <DIV>Why not fitting two bridges in the place of the one long bridge, so it is easy to locate those in order to avoid the string length problem at the strut ?  What would be the drawback ?</DIV> <DIV>I suppose that if this was not a stupid idea, manufacturers would have done this.  But I'd like to understand why not.</DIV> <DIV> </DIV> <DIV>Best regards.</DIV> <DIV> </DIV> <DIV>Stéphane Collin.</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">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=Erwinspiano@aol.com href="mailto:Erwinspiano@aol.com">Erwinspiano@aol.com</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, December 19, 2006 2:40 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Bridge Doglegs, was: Spreadsheet info / Jason Kanter</DIV> <DIV><BR></DIV><FONT id=role_document face=Arial color=#000000 size=2> <DIV> <DIV>  <STRONG><EM>Terry</EM></STRONG></DIV> <DIV><STRONG><EM>  Probably just cost more.  Bottom line thinking you know.</EM></STRONG></DIV> <DIV><STRONG><EM>  Dale</EM></STRONG></DIV> <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000000 size=2>To what advantage is minimizing the bridge dogleg? If the bridge needs a 30 <BR>mm offset to maintain target speaking length progression, then why not just <BR>build the bridge with a 30 mm offset? What's the problem?<BR><BR>Terry Farrell</FONT></BLOCKQUOTE></DIV> <DIV></DIV> <DIV> </DIV></BLOCKQUOTE></FONT></FONT></BLOCKQUOTE></BODY></HTML>