Stein grand unique board was: Piano Rims.

[Erwinspiano@AOL.COM]

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> Phil Ford writes
> >
> > If what you want is the entire soundboard moving up
> > and down as a diaphragm it seems to me that having
> > this hinged edge attachment might come closer to
> > giving that than a clamped edge arrangement.
> > Actually building something workable might be
> > difficult.
> 
> And we must avoid difficulties at all cost!
> 
> As time goes on I find myself coming closer and closer to the notion of a
> hinged-edge diaphragm configuration. Our soundboards are functionally very
> near that now. And my new 200 cm grand design is even closer.
> 
> Del
> 
        Del, Phil and all
         This may not be completely irrelevant but since we are taliking 
hinged sdboard systems. I recently saw a Charles Fredrick Stein built in 
Chicago in the golden years. This piano was 6ft. 3 ish and beautifully 
rebuilt and refinished by Bob And Marcia Davis of Stockton Ca.      
       The Original belly system was a clamped edge system only on the belly 
rail and near the first highest rib on the curve as I recall. The rest of the 
system consisted of the ribs glued on top of the inner rim ( not morticed in 
as usual) with the board glued to n the ribs as usual but not to the rim. 
Basically a free edge more or less.  Dumfounded was I at the rich sining tone 
and broad dynamics. It made me think of your (Dels) description of tonal 
range/dynamics in the pp area and the power generated by a strong fundamental 
in the forte ranges. No clang and bang just wonderful musical power and 
sustain.
    (Bob/Marcia  jump in here and add or correct anything I'm forgetting.)

            Happy Old/New year to all
            Dale Erwin

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