[pianotech] Piano scales

[Delwin D Fandrich]

My dual mono-chord was designed to test just such things. When I did these
sorts of comparisons in the piano there were always so many variables it was
impossible to tell just which change in scaling or structure was making any
given change in tone. Even if the only change being made was the wire sizes
of one note this doesn't tell you what happens if you change the wire sizes
through the whole section. The dual mono-chord is set up so I can change
just one thing--such as the wire size of just one of two otherwise identical
setups--and leave everything else the same. Done this way the difference in
timbre between two unisons using different wire sizes--hence different
amounts of stiffness and tension--but still using identical soundboard
assemblies, identical string lengths, backscales, bearing, etc., becomes
obvious.

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

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Joseph Garrett
Sent: Tuesday, September 27, 2011 12:04 AM
To: pianotech
Subject: Re: [pianotech] Piano scales

Del's comments are greatfully accepted.<G> After all, he's the one that got
me so into that stuff.
 It's good to know that "Scale Ripper" is a valid program. Theres' so much
new stuff out there, it's hard to keep up with it.
As far as the "poppycock" thang, that's your assessment with your
experiments Since I have not had the opportunity to do as much of that good
ol' R&D, I've had to rely on some small indiviidual cases. That is how I
came to those conclusions. I'll bow to your greater knowledge in that case.
i.e.....back to the drawing board a bit. I do suspect that given your other
skills of designing soundboards and the rest of the sonic structure, you've
had greater variables to work with. On that account, I'm completely out to
lunch, as you already know.<G> (With one exception, the only boards I've
ever done were those designed and made by Del<G>) The previous comments by
D. Love, (I hope I'm quoting the right guy this time.<G>), really said it
all as to the whys and hows. Said much better than I was able to.
Joe


Joe Garrett, R.P.T.
Captain of the Tool Police
Squares R I