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<p>Newton Hunt wrote:
<blockquote TYPE=CITE>Inharmonicity is a function of the stiffness of the
wire which is a
<br>function of length and tension. A change in wire formulation
will
<br>not have an appreciable effect on Inh. It may be measurable but
no
<br>one could hear the difference.</blockquote>
Hmm... he said it was quite an appreciable notice. For what it is worth,
tho I am not clear on how these things fit together (if at all) yet.. He
gives the following. E-modulus close to190 kN/mm<font face="">2,
and an Average density figure of 7.90</font>
<blockquote TYPE=CITE>
<p>Tone duration is a function of the spring quality of the string.
<br>Lowering the tensile strength of the wire can effect sustain.
<br>Since many pianos have breaking percentage in the 60 to 70% range
<br>in the treble any appreciable lowering of strength will increase
<br>breakage likelihood.
<br> </blockquote>
He says his stuff is just about 8% lower in tensile strength then modern
wire. He states that it will hold up to just about any modern scale. I
got a whole chart of figures for each gauge which gives Yield points and
Breaking points numbers. Obviously (grin I think anyways) Using this wire
for designing a new scale on a piano would require a different scaleing
program (because of the wire characteristics) Any idea where to get ahold
of something like this ? or how to construct a crude one myself ??
<blockquote TYPE=CITE>
<br>We would not use antique style wire to string a modern piano.
The
<br>reverse is done, out of ignorance of wire quality, but the tone
<br>does change in this instance because the tensile strength is
<br>substantially lower.</blockquote>
<p><br>I understand this much at least...grin.
<blockquote TYPE=CITE>
<p>Small changes are not likely to be notable until getting into
a
<br>truly compromised area.
<p>IMNSHO
<p>
Newton</blockquote>
<p>--
<br>Richard Brekne
<br>Associate PTG, N.P.T.F.
<br>Bergen, Norway
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