Hi David A couple pictures showing the rib array and scallop. I'm going to look at the rib scale again. I was trying to remember if I asked David L. to run a spread sheet on the rib scale. Neither had laminated ribs as I recall. It is intriguing to see how near the center of the ribs the bridge lies. By the way, he wouldn't tell you, but Dave Andersen just got a new hip. Go Dave! Dale -----Original Message----- From: David Andersen <david at davidandersenpianos.com> To: pianotech at ptg.org Sent: Mon, Feb 8, 2010 10:20 am Subject: Re: [pianotech] Hammer strike line. Was-----Yamaha Hammer Suggestion Let me jump in here...hopefully my brother Dale will too. The rebuilt "C" we brought to Rochester in 2006 has a RC&S board, and the tone in notes 68-76 got WAY better when we arced the line in, as Dale's pic showed. Whattup with THAT, Nossaman? Love and kisses....<g> DA On Feb 7, 2010, at 5:43 PM, PAULREVENKOJONES at aol.com wrote: Let me also say, Ron, that I was speaking to the differences between new soundboard installation with new hammers and what we find from the factory. If it is indeed a difference between soundboard panel construction, the evidence albeit being sketchy at best so far, it is an interesting distinction and well worth studying. And my point, again, was that factory production rarely allows for deviations from straight lines, particularly in hammer production and installation. Nor was I imputing a presumption on your part. Relax. Paul In a message dated 2/7/2010 7:16:15 P.M. Central Standard Time, rnossaman at cox.net writes: PAULREVENKOJONES at aol.com wrote: > I would posit that it's factory work, whatever the soundboard panel > structure. Efficient factory forefinishing has to presume much too > consistent a belly structure. Thoughtful deviations from a straight line > require time and care. I don't think it's primarily the soundboard. Meaning that in all the RC&S soundboards you've installed, you've never not had to deviate from a straight strike line? I'm not talking about assuming anything at all. "Whatever the soundboard structure" is the point, not factory presumption. Ron N = -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100209/d8c88842/attachment-0001.htm> -------------- next part -------------- A non-text attachment was scrubbed... Name: Andersens C -1.JPG Type: image/pjpeg Size: 99132 bytes Desc: not available URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100209/d8c88842/attachment-0004.bin> -------------- next part -------------- A non-text attachment was scrubbed... Name: Andersen C-2.JPG Type: image/pjpeg Size: 131629 bytes Desc: not available URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100209/d8c88842/attachment-0005.bin> -------------- next part -------------- A non-text attachment was scrubbed... Name: Erwins custom Stwy B panel- Anaheim.JPG Type: image/pjpeg Size: 279378 bytes Desc: not available URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100209/d8c88842/attachment-0006.bin> -------------- next part -------------- A non-text attachment was scrubbed... Name: Erwins B -2.JPG Type: image/pjpeg Size: 473109 bytes Desc: not available URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100209/d8c88842/attachment-0007.bin>
This PTG archive page provided courtesy of Moy Piano Service, LLC