<html> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 10 (filtered)"> <style>  </style> </head> <body lang=EN-US link=blue vlink=blue> <div class=Section1> I’ve done them both ways (fanned and original rib positions without significant compression) and haven’t found a huge difference.  Fanning the ribs seems to reduce resonances some (though it doesn’t seem to eliminate them entirely), it also allows you to float the bass (which I didn’t do on this project).  The panel was ribbed at 6% (30%RH @ 85 degrees F) so it does have just a bit of compression.   On some projects, you have to make choices.    <div> David Love davidlovepianos@comcast.net www.davidlovepianos.com </div> -----Original Message----- From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of erwinspiano@aol.com Sent: Saturday, May 17, 2008 7:20 PM To: pianotech@ptg.org Subject: Re: Steinway O revisited     David     Since the original rib scale was originally designed to work in conjunction with panel compression stiffness are you concerned  about any potential unwanted soundboard resonance's by retaining the original rib scale placement & same no. of ribs even though they are beefed up to support the entire crown load?    Dale <div id="AOLMsgPart_0_e99e4a05-a9ed-4259-af11-d6008bc55e94"><pre style='margin-left:.5in;background:white'><tt> </tt></pre><pre style='margin-left:.5in;background:white'><tt>-----Original Message-----</tt></pre><pre style='margin-left:.5in;background:white'><tt>From: <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>] On Behalf</tt></pre><pre style='margin-left:.5in;background:white'><tt>Of David Love</tt></pre><pre style='margin-left:.5in;background:white'><tt>Sent: Saturday, May 17, 2008 11:16 AM</tt></pre><pre style='margin-left:.5in;background:white'><tt>To: 'Pianotech List'</tt></pre><pre style='margin-left:.5in;background:white'><tt>Subject: Steinway O revisited</tt></pre><pre style='margin-left:.5in;background:white'><tt> </tt></pre><pre style='margin-left:.5in;background:white'><tt>Here's a Steinway O with modifications: transition bridge (old style</tt></pre><pre style='margin-left:.5in;background:white'><tt>connection), cut-off, modified bass bridge sans cantilever, adjustable plate</tt></pre><pre style='margin-left:.5in;background:white'><tt>mounting system.  Vertical hitches in the plate in the treble section (not</tt></pre><pre style='margin-left:.5in;background:white'><tt>pictured).  Plate goes in today.    </tt></pre><pre style='margin-left:.5in;background:white'><tt> </tt></pre><pre style='margin-left:.5in;background:white'><tt>David Love </tt></pre><pre style='margin-left:.5in;background:white'><tt> </tt></pre></div>  <div id=u8CA86A4D8F92420-A90-1360> <div class=MsoNormal align=center style='margin-right:0in;margin-bottom:0in; margin-left:.5in;margin-bottom:.0001pt;text-align:center'> <hr size=2 width="100%" align=center> </div> Plan your next roadtrip with <a href="http://www.mapquest.com/?ncid=mpqmap00030000000004" target="_blank" title="http://www.mapquest.com/?ncid=mpqmap00030000000004">MapQuest.com</a>: America's #1 Mapping Site. </div> </div> </body> </html>