[pianotech] 102 keys and 4 pedals???

[Delwin D Fandrich]

While they perform similar functions the two bridge pieces are of quite
different design. There were two basic problems with the Sohmer
implementation of this idea. First, the tension of the strings put a
constant twisting force on the agrafe that ultimately either twisted the
bridge/soundboard panel or split the bridge. Second, this tendency to either
twist or split was exacerbated by some of the highest string tensions ever
seen in a modern piano. One that I rebuilt had string tensions measuring
over 250 lbf (yes, that is per individual string) through much of the tenor
and lower treble section. That's enough to destroy any piano.

 

By contrast the type of bridge termination device used by Stuart, et al do
not put any twisting force on the bridge. 

 

ddf

 

Delwin D Fandrich

Piano Design & Fabrication

6939 Foothill Court SW, Olympia, Washington 98512 USA

Phone  360.515.0119 - Cell  360.388.6525

 <mailto:del at fandrichpiano.com> del at fandrichpiano.com -
<mailto:ddfandrich at gmail.com> ddfandrich at gmail.com

 

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Euphonious Thumpe
Sent: Saturday, November 03, 2012 3:04 AM
To: pianotech at ptg.org
Subject: Re: [pianotech] 102 keys and 4 pedals???

 


While I'm sure it's a great piano (and I'd surely like to play one!) it is
interesting to note that the 2 "innovations" that are seemed to be claimed
as original are the bridge agraffe (which we've all just deeply discussed)
and a lifting hammer rail, as was used on reproducing pianos a century ago.
But it would definitely be interesting to see if the bridge agraffe design
on the Stuart overcomes the issues that Sohmer et al suffered with their
versions last century. (I hope it works and creates no problems.) Other than
that, all I can say is that the text is in dire need of a copy editor! When
attempting to market what is surely an extremely "high-end" product, it is
far more convincing when the advertising material is bereft of spelling and
word use "goofs"! (I found several.)

Thumpe

 

  _____  

From: Jason Kanter <jkanter at rollingball.com>; 
To: Pianotech <pianotech at ptg.org>; 
Subject: [pianotech] 102 keys and 4 pedals??? 
Sent: Sat, Nov 3, 2012 5:14:26 AM 


http://www.smh.com.au/entertainment/music/grand-design-resonates-with-young-
musicians-20121102-28ppk.html

 

Any of you Ozzies familiar with this Stuart & Sons piano?

 

Jason Kanter 



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jason's cell 425 830 1561

 

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