<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html xmlns:v="urn:schemas-microsoft-com:vml" = xmlns:o="urn:schemas-microsoft-com:office:office" = xmlns:w="urn:schemas-microsoft-com:office:word" = xmlns:st1="urn:schemas-microsoft-com:office:smarttags" = xmlns="http://www.w3.org/TR/REC-html40"> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; = charset=US-ASCII"> <meta name=ProgId content=Word.Document> <meta name=Generator content="Microsoft Word 10"> <meta name=Originator content="Microsoft Word 10"> <link rel=File-List href="cid:filelist.xml@01C55DDF.3530ADC0"> <o:SmartTagType = namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="PersonName"/>  <style>  </style>  </head> <body lang=EN-US link=blue vlink=purple = style='tab-interval:.5in' id="role_body" bottomMargin=7 leftmargin=7 topmargin=7 rightMargin=7> <div class=Section1> To drop the = plate 3/4” (say) at the bass end, you would need to lower the dowels half way = between the pinblock and the bass end by 3/8”.  The dowels aren’t that = tall at that point.  The plate = would be resting below the level of the soundboard panel.  I think they did bend the plate = in order to try and keep the bridge height uniform.  In this case, in order to achieve that, they had to bend it quite = a bit.  Recapping all the bridges = aside, I don’t see any unbent position for the plate that would allow for reasonably uniform bridge heights.  Recapping the treble will allow me to experiment a little though = and possible lower the bass end a touch by raising the treble corner and = trimming just slightly the dowels in the middle.   <o:p></o:p> <o:p> </o:p> <div> David Love <st1:PersonName>davidlovepianos@comcast.net</f= ont></st1:PersonName> = <o:p></o:p> </div> -----Original = Message----- From: = pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of <st1:PersonName>Erwinspiano@aol.com<= /font></st1:PersonName> Sent: Saturday, May 21, = 2005 7:44 AM To: pianotech@ptg.org Subject: Re: Plate = Flexing <o:p> </o:p> <div> <div> In a message dated 5/21/2005 2:24:03 A.M. Pacific Standard Time, mfarrel2@tampabay.rr.com writes:<o:p></o:p> </div> <blockquote style='border:none;border-left:solid blue = 1.5pt;padding:0in 0in 0in 4.0pt; margin-left:3.75pt;margin-top:5.0pt;margin-bottom:5.0pt'> considerable amount.  The dowels are all cut pretty evenly around the > perimeter.  The plate just warped.  My understanding is = that during > certain periods at Steinway, plate warping was more of a problem = that at > others.<o:p></o:p> </blockquote> </div> <div>  </f= ont> David<o:p></o:p> </div> <div>   I'm  Not convinced the plate is warped.<o:p></o:p> </div> <div>  But the the dowells were arranged short to pull the plate down = significantly. The question is why.<o:p></o:p></spa= n> </div> <div>   With the plate installed over a new board but with out dowells, imaginne the = plate screwed to the block & the very last plate boss sitting on the board = in the tail. This is  the only places that are touching so there's kind of = a triangulation in this scenario that I find common. Even with  the usual very short dowell at this location I rarely find  the = others this short until it comes to the treble.  I think they simply = wanted the plate to sit at a very low & constant elevation instead of = allowing  the bridge thickness to rise & fall to match the plate. SO they = pulled it down<o:p></o:p> </div> <div>   Dale<o:p></o:p> </div> </div> </body> </html>