---------------------- multipart/alternative attachment At 08:43 PM 4/9/2003, Ed Foote wrote: >Greetings, > The killer octave is usually supported by the section of belly rail that >is farthest from buttressing. The normal connection of the plate to the >belly rail at the plate's "horn" provides resistance to outward movement, and >the rails connection to the case at the treble end, likewise. However, the >ribs that must support crown under the killer octave bear against the >bellyrail at its greatest unsupported span and it just might be one reason >that this section of the piano loses its bearing first. (The rib under the >C5 on a Steinway O meets the bellyrail approx. halfway between the plate horn >and the treble end of the rail). > Many other reasons could go into the equation, too. > >Ed Foote RPT >www.uk-piano.org/edfoote/ >www.uk-piano.org/edfoote/well_tempered_piano.html >At 11:31 PM -0400 9/4/03, Greg Newell wrote: > >Ed, > This is interesting. I've never heard this take on the >problem before but it seems logical and worth some consideration. >Anyone else have thoughts about this particular line of reasoning? > >Greg Newell I also am of the view, that not all of the beams should collect at the 'tone collector'. The idea of leaving the belly rail relatively unsupported adjacent to the mid-treble would seem to be poor design - regardless of the fact that almost all in the 'top end of town' are doing it. John Hartman's post about the higher loading in the treble (since there are more unison strings per unit of bridge length) relative to the lower treble and bass is an excellent point also. Regards, Ron O. -- _______________________ OVERS PIANOS - SYDNEY Grand Piano Manufacturers Web: http://overspianos.com.au mailto:info@overspianos.com.au _______________________ ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/b0/dc/a2/d9/attachment.htm ---------------------- multipart/alternative attachment--
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