<font color='navy' size='2' face='Comic Sans MS, sans-serif'>Ok I sa<font size="2" color="navy" face="Comic Sans MS, sans-serif">w this but missed the treble layout brilliance dude. Well done.<br> <br> <div style="clear:both"><font size="1" color="royalblue"><b><font face="Georgia, Times New Roman, Times, Serif"><font color="black"><font color="mediumblue" face="Comic Sans MS, sans-serif">Dale Erwin... RPT</font><br> </font></font></b></font><font color="darkgreen"><span style="font-style: italic;"><b><font size="1"><font color="black"><font color="blueviolet"><font color="black"> <font color="black" face="Comic Sans MS, sans-serif">Mason & Hamlin</font><font face="Comic Sans MS, sans-serif">/Steinway/</font><font color="black" face="Comic Sans MS, sans-serif">U.S pianos</font><font face="Comic Sans MS, sans-serif"><br> </font></font></font></font><font color="black" face="Comic Sans MS, sans-serif">www.Erwinspiano.com</font><br> <font color="crimson" face="Comic Sans MS, sans-serif">209-577-8397</font><br> <font color="darkgreen"></font></font></b></span></font><tt><tt><font color="darkgreen"><br>  </font><br>   <font size="2"></font></tt></tt><br> <br> </div> <br> <br> <div style="font-family:arial,helvetica;font-size:10pt;color:black">-----Original Message-----<br> From: Delwin D Fandrich <del@fandrichpiano.com><br> To: pianotech <pianotech@ptg.org><br> Sent: Thu, May 24, 2012 1:43 pm<br> Subject: Re: [pianotech] David Love--Centering the bridge--was S&S something er other<br> <br> <div id="AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e"> <style>#AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e td{color: black;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} @font-face {font-family:Tahoma; panose-1:2 11 6 4 3 5 4 4 2 4;} @font-face {font-family:"Comic Sans MS"; panose-1:3 15 7 2 3 3 2 2 2 4;} @font-face {font-family:Georgia; panose-1:2 4 5 2 5 4 5 2 3 3;} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e p.MsoNormal,#AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e li.MsoNormal,#AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e div.MsoNormal {margin:0cm; margin-bottom:.0001pt; font-size:12.0pt; font-family:"Times New Roman","serif";} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e tt {mso-style-priority:99; font-family:"Courier New";} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e p.MsoAcetate,#AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e li.MsoAcetate,#AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e div.MsoAcetate {mso-style-priority:99; mso-style-link:"Balloon Text Char"; mso-margin-top-alt:auto; margin-right:0cm; mso-margin-bottom-alt:auto; margin-left:0cm; font-size:12.0pt; font-family:"Times New Roman","serif";} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e span.BalloonTextChar {mso-style-name:"Balloon Text Char"; mso-style-priority:99; mso-style-link:"Balloon Text"; font-family:"Tahoma","sans-serif";} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e p.msochpdefault,#AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e li.msochpdefault,#AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e div.msochpdefault {mso-style-name:msochpdefault; mso-margin-top-alt:auto; margin-right:0cm; mso-margin-bottom-alt:auto; margin-left:0cm; font-size:12.0pt; font-family:"Times New Roman","serif";} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e span.balloontextchar0 {mso-style-name:balloontextchar; mso-style-priority:99; font-family:"Tahoma","sans-serif";} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e span.balloontextchar00 {mso-style-name:balloontextchar0;} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e span.emailstyle20 {mso-style-name:emailstyle20;} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e span.emailstyle21 {mso-style-name:emailstyle21;} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e span.emailstyle22 {mso-style-name:emailstyle22;} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e span.emailstyle23 {mso-style-name:emailstyle23;} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e span.emailstyle24 {mso-style-name:emailstyle24;} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e span.EmailStyle28 {mso-style-type:personal; font-family:"Calibri","sans-serif"; color:#1F497D;} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e span.EmailStyle29 {mso-style-type:personal; font-family:"Calibri","sans-serif"; color:#1F497D;} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e span.EmailStyle30 {mso-style-type:personal; font-family:"Comic Sans MS"; color:navy; font-weight:normal; font-style:normal; text-decoration:none none;} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e span.EmailStyle31 {mso-style-type:personal; color:black;} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e span.EmailStyle32 {mso-style-type:personal; font-family:"Comic Sans MS"; color:navy; font-weight:normal; font-style:normal; text-decoration:none none;} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e span.EmailStyle33 {mso-style-type:personal-reply; font-family:"Comic Sans MS"; color:navy; font-weight:normal; font-style:normal; text-decoration:none none;} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e .MsoChpDefault {mso-style-type:export-only; font-family:"Calibri","sans-serif";} @page WordSection1 {size:612.0pt 792.0pt; margin:72.0pt 72.0pt 72.0pt 72.0pt;} #AOLMsgPart_2_f882fbe5-ea9b-4027-8b3c-215c707a6d3e div.WordSection1 {page:WordSection1;} </style> <div class="WordSection1"> <div class="MsoNormal"><span style="font-size:11.0pt;font-family:">I don’t know—did you? I’ve cut and pasted the post in which it first appeared below:</span></div> <div class="MsoNormal"><span style="font-size:11.0pt;font-family:"> </span></div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt;font-family:">Look at the drawing below. </span></div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt;font-family:"><img id="_x0000_i1026" src="cid:image001.jpg@01CD39B3.2EA7A3C0" height="249" width="290"></span><span style="font-size:11.0pt;font-family:"></span></div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt;font-family:"> </span></div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt;font-family:">Ribs #2 and #4 extend across the width of the working portion of the soundboard. The low end of the bridge has an extension that goes over the floating portion of the soundboard liner. These three ribs provide all of the stiffness the area around the bass bridge needs.</span></div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt;font-family:"> </span></div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt;font-family:">The rest of the ribs are all sized to provide the necessary stiffness to the area around the tenor/treble bridge. </span></div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt;font-family:"> </span></div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt;font-family:">In the Fandrich piano the ribs that terminate in the Z-Bar—i.e., ribs #5 through #13—are set into notches in either the Z-Bar or the soundboard cutoff bar. The lower ribs—#1 through #4—terminate about 10 mm in from edge of the soundboard panel. </span></div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt;font-family:"> </span></div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt;font-family:">The M rim set up against the soundboard assembly do highlight the Z-Bar but this is not quite how the Z-Bar works. The Z-Bar presents a very rigid termination to the soundboard panel in the area around the treble end of the bridge. The further down the scale you go the Z-Bar its termination impedance decreases—its stiffness decreases--allowing the edge of the working portion of the soundboard to move with increasing freedom. </span></div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt;font-family:"> </span></div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt;font-family:">The termination impedance of the soundboard panel varies with the frequency of the energy waves traveling across the soundboard assembly; the fundamentals and lower partials are affected more by the stiffness—which is decreasing down the scale—of the Z-Bar while the higher partials are affected more by its mass which also decreases further away from the point where it is solidly fixed to the back assembly. The soundboard assembly actually appears larger to the fundamentals and lower partials; smaller to the higher partials. In practice this has the effect of increasing the dynamic range of the instrument through the tenor section of the piano.</span></div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt;font-family:"> </span></div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt;font-family:">The Z-Bar also adds both stiffness and mass to the area around the tenor end of the bass bridge. By coupling the ends of the Z-Bar and the bass bridge together the bass bridge extends the effectiveness of the Z-Bar further down the scale keeping the effective area of the soundboard relatively smaller than it would otherwise be which improves the efficiency of the soundboard around the low end of the tenor bridge. The bass bridge is able to take advantage of the entire soundboard area in the lower half of the soundboard assembly.</span></div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt;font-family:"> </span></div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:11.0pt;font-family:">That’s the short version and I think I got it all straight. It’s late and it’s been a very long day—I’ve been moving shop equipment and tools and other stuff—so I’m not guaranteeing anything. I’m sure if I got something turned around someone will be happy to point it out to me….</span></div> <div class="MsoNormal"><span style="font-size:11.0pt;font-family:"> </span></div> <div class="MsoNormal"><span style="font-size:11.0pt;font-family:">ddf</span></div> <div class="MsoNormal"><span style="font-size:11.0pt;font-family:"> </span></div> <div class="MsoNormal"><span style="font-size:11.0pt;font-family:"> </span></div> <div class="MsoNormal"><span style="font-size:11.0pt;font-family:"> </span></div> <div class="MsoNormal"><span style="font-size:11.0pt;font-family:"> </span></div> <div class="MsoNormal"><span style="font-size:10.0pt;font-family:">Delwin D Fandrich</span><span style="font-size:10.0pt;font-family:"></span></div> <div class="MsoNormal"><span style="font-size:10.0pt;font-family:">Piano Design & Fabrication</span><span style="font-size:10.0pt;font-family:"></span></div> <div class="MsoNormal"><span style="font-size:10.0pt;font-family:">6939 Foothill Court SW, </span><span style="font-size:10.0pt;font-family:">Olympia, Washington 98512 USA</span></div> <div class="MsoNormal"><span style="font-size:10.0pt;font-family:">Phone  360.515.0119 — Cell  360.388.6525</span><span style="font-size:10.0pt;font-family:"></span></div> <div class="MsoNormal"><span style="font-size:10.0pt;font-family:"><a href="mailto:del@fandrichpiano.com"><u><span style="color:blue">del@fandrichpiano.com </span></u></a></span><span style="font-size:10.0pt;font-family:">— </span><span style="font-size:10.0pt;font-family:"><a href="mailto:ddfandrich@gmail.com"><u><span style="color:blue">ddfandrich@gmail.com</span></u></a></span><span style="font-size:11.0pt;font-family:"></span></div> <div class="MsoNormal"><span style="font-size:11.0pt;font-family:"> </span></div> <div class="MsoNormal" style="margin-left:36.0pt"><b><span style="font-size:10.0pt;font-family:">From:</span></b><span style="font-size:10.0pt;font-family:"> <a href="mailto:pianotech-bounces@ptg.org">pianotech-bounces@ptg.org</a> [<a href="mailto:pianotech-bounces@ptg.org?">mailto:pianotech-bounces@ptg.org</a>] <b>On Behalf Of </b>Dale Erwin<br> <b>Sent:</b> Thursday, May 24, 2012 1:24 PM<br> <b>To:</b> <a href="mailto:pianotech@ptg.org">pianotech@ptg.org</a><br> <b>Subject:</b> Re: [pianotech] David Love--Centering the bridge--was S&S something er other</span></div> <div class="MsoNormal" style="margin-left:36.0pt"> </div> <div class="MsoNormal" style="mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:12.0pt;margin-left:36.0pt"><span style="font-size:10.0pt;font-family:">Did I miss a picture of this?</span></div> <div> <div class="MsoNormal" style="mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:12.0pt;margin-left:36.0pt"><b><span style="font-size:7.5pt;font-family:">Dale Erwin... RPT</span></b><b><span style="font-size:7.5pt;font-family:"><br> </span></b><b><i><span style="font-size:7.5pt;font-family:">Mason & Hamlin/Steinway/U.S pianos<br> <a target="_blank" href="http://www.Erwinspiano.com"><span style="color:windowtext">www.Erwinspiano.com</span></a></span></i></b><b><i><span style="font-size:7.5pt;font-family:"><br> </span></i></b><b><i><span style="font-size:7.5pt;font-family:">209-577-8397</span></i></b><b><i><span style="font-size:7.5pt;font-family:"><br> </span></i></b><span style="font-size:10.0pt;font-family:"><br> <tt> </tt></span><span style="font-size:10.0pt;font-family:"><br> <tt>  </tt></span><span style="font-size:10.0pt;font-family:"></span></div> </div> <div class="MsoNormal" style="mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:12.0pt;margin-left:36.0pt"><span style="font-size:10.0pt;font-family:"> </span></div> <div> <div class="MsoNormal" style="mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:12.0pt;margin-left:36.0pt"><span style="font-size:10.0pt;font-family:">-----Original Message-----<br> From: Delwin D Fandrich <<a href="mailto:del@fandrichpiano.com"><span style="color:windowtext">del@fandrichpiano.com</span></a>><br> To: pianotech <<a href="mailto:pianotech@ptg.org"><span style="color:windowtext">pianotech@ptg.org</span></a>><br> Sent: Thu, May 24, 2012 1:14 pm<br> Subject: Re: [pianotech] David Love--Centering the bridge--was S&S something er other</span></div> <div id="AOLMsgPart_1_b5f6e61c-e2ee-40da-882e-850a7d4b2a85"> <div> <div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:">Well, that is what most of this conversation has been about. </span></div> </div> <div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:"> </span></div> </div> <div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:">At the time I was designing the 122 Fandrich vertical piano it seemed logical to me (and it still does) that it would be desirable to place the driving energy source of the vibrating diaphragm—i.e., the bridge—relatively close to the middle of the working part of the soundboard and its supporting ribs. The energy wave starts there and moves away from both sides of the bridge on across the soundboard to the mounting points and it seems a good idea that both arrive at more-or-less the same time. Since this was a new design and I could do anything I wanted I did so and was pleased with the results. It’s one of the best treble sections I’ve designed for any piano of any type. This was, to my knowledge, one of very few pianos that have been built with the treble section designed so the bridge could be placed relatively close to the center of the ribs. At least I can’t recall seeing any others. The physical construction of the grand piano makes it impossible and I don’t know of any upright piano designs that attempted it though there might well be some.</span></div> </div> <div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:"> </span></div> </div> <div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:">As may be, I got a combination of power and sustain out of this design that was noticeably better than anything I’d done previously. And this with relatively light and un-juiced hammers. </span></div> </div> <div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:"> </span></div> </div> <div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:">ddf</span></div> </div> <div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:"> </span></div> </div> <div> <div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:">Delwin D Fandrich</span></div> </div> <div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:">Piano Design & Fabrication</span></div> </div> <div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:">6939 Foothill Court SW, Olympia, Washington 98512 USA</span></div> </div> <div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:">Phone  360.515.0119 — Cell  360.388.6525</span></div> </div> <div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:"><a href="mailto:del@fandrichpiano.com"><u><span style="color:blue">del@fandrichpiano.com </span></u></a>— <a href="mailto:ddfandrich@gmail.com"><u><span style="color:blue">ddfandrich@gmail.com</span></u></a></span></div> </div> </div> <div> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:"> </span></div> </div> <div> <div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"> <div style="margin-left:36.0pt"> <div class="MsoNormal" style="margin-left:36.0pt"><b><span style="font-size:10.0pt;font-family:">From:</span></b><span style="font-size:10.0pt;font-family:"> <a href="mailto:pianotech-bounces@ptg.org"><u><span style="color:blue">pianotech-bounces@ptg.org</span></u></a> [<a href="mailto:pianotech-bounces@ptg.org?"><u><span style="color:blue">mailto:pianotech-bounces@ptg.org</span></u></a>] <b>On Behalf Of </b>Gene Nelson<br> <b>Sent:</b> Thursday, May 24, 2012 9:37 AM<br> <b>To:</b> <a href="mailto:pianotech@ptg.org"><u><span style="color:blue">pianotech@ptg.org</span></u></a><br> <b>Subject:</b> Re: [pianotech] David Love--Centering the bridge--was S&S something er other</span></div> </div> </div> </div> <div style="margin-left:36.0pt"> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:"> </span></div> </div> <div style="margin-left:36.0pt"> <div class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:">Yes indeed. Can you talk a bit about the treble bridge as well? Without your redesign work the bridge would also be located near the end of a rib – not so desirable up there.</span></div> </div> <div> <div style="margin-left:36.0pt"> <div class="MsoNormal" style="margin-left:36.0pt;text-align:center" align="center"><span style="font-size:10.0pt;font-family:"><hr align="center" size="2" width="100%"></span></div> </div> </div> </div> </div> </div> </div> </div>  </div> </font></font>