----- Original Message ----- From: Stephen Birkett <birketts@wright.aps.uoguelph.ca> To: <pianotech@ptg.org> Sent: Monday, September 27, 1999 7:51 AM Subject: Re: evaluating sdbd. crown & bridge downbearings in a new piano > Ron wrote: > > ...ube of it's height (height^3), compression crown systems will tend to > > have ribs that are wider than they are deep, where rib crowned systems tend > > to have ribs that are deeper than they are wide. Other than that, computing > > ... > > > These parameters are surely so confounded with desired/designed > stiffness:mass ratio that such generalization is unlikely. > > Stephen -------------------------------------------------- Generally, these generalizations will hold true. True, the differences are subtle. But they will usually be apparent to one experienced in studying each system -- at least as they are used in the 'modern' piano. Del Delwin D Fandrich Piano Designer & Builder Hoquiam, Washington USA E.mail: pianobuilders@olynet.com Web Site: http://pianobuilders.olynet.com/
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