Del: Just to clarify my previous post as I sent it from a blackberry. I assume you were talking about this picture. The picture has nothing to do with how the rib is bent. In fact it has nothing to do with *a rib* at all but represents the entire assembly and its deflection characteristics under increasing load. The y axis represents crown and the x axis load. As the load increases the crown diminishes. The crown diminishes at a faster rate as the load is first added, but as the board stiffens with increasing load the rate of deflection per lb diminishes. That's all. cid:image007.png at 01CC376C.19134270 David Love www.davidlovepianos.com -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of David Love Sent: Thursday, July 14, 2011 7:26 PM To: pianotech at ptg.org Subject: Re: [pianotech] Measuring Crown Radius It simply illustrates that as load increases the amount of crown diminishes at an ever decreasing rate. David Love www.davidlovepianos.com (sent from bb) -----Original Message----- From: "Delwin D Fandrich" <del at fandrichpiano.com> Sender: pianotech-bounces at ptg.org Date: Thu, 14 Jul 2011 17:09:20 To: <pianotech at ptg.org> Reply-To: pianotech at ptg.org Subject: Re: [pianotech] Measuring Crown Radius David, what are you trying to illustrate in the picture? You have your rib bent to a crown radius that will never be seen in a real piano. ddf Delwin D Fandrich Piano Design & Fabrication 6939 Foothill Court SW, Olympia, Washington 98512 USA Phone 360.515.0119 - Cell 360.388.6525 del at fandrichpiano.com - ddfandrich at gmail.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20110714/76c0e5ca/attachment.htm> -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: image/png Size: 787 bytes Desc: not available URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20110714/76c0e5ca/attachment.png> -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: image/png Size: 1932 bytes Desc: not available URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20110714/76c0e5ca/attachment-0001.png>
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