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Hi Ron<br>
<br>
My my my... this article seems to have elicited quite the reaction.
Thanks muchly for taking the time to pick apart so much of the article
and put your own perspectives into the mix here. An interesting read
all the way through.<br>
<br>
One question... the table you supply below.. Unless I misread the
numbers you supply ... it looks like the Titanium has the lowest
expansion per unit length per degree F. if this is so, then please
explain why this is a detriment to tuning stability. In fact a quick
explanation about the linear expansion coefficient for metal in this
(stability) regard in general might be really nice, as I am unclear on
this subject<br>
<br>
-- Overs Pianos wrote:
<blockquote cite="mida06110401bd44f9d011fb@%5B10.0.0.68%5D" type="cite">
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<title>Re: An interesting? piano
article</title>
<div>Hi Stephen and all,</div>
<div><br>
</div>
<div>What a document this is. I have BCC'd Peter Gardner from Pianos
Onlide with this post also. I presume he approves with the content of
the said article, since it is published on his website....... <br>
</div>
</blockquote>
snip. please refer to Rons last post.<br>
<br>
<br>
<blockquote cite="mida06110401bd44f9d011fb@%5B10.0.0.68%5D" type="cite"><font
color="#0000ff">A very interesting option, especially if we
are hoping to produce a piano which goes immediately out of tune as
soon the ambient temperature changes a mere couple of
degrees.</font></blockquote>
<br>
<blockquote cite="mida06110401bd44f9d011fb@%5B10.0.0.68%5D" type="cite"><><font
color="#0000ff"><b> SAMPLE LINEAR EXPANSION
COEFFICIENTS</b></font></>
<div><font color="#0000ff"><br>
</font></div>
<div><font color="#0000ff"><x-tab>
</x-tab>Metal<x-tab>
</x-tab><x-tab>
</x-tab>Linear Expansion (per unit length per degree F)</font></div>
<div><font color="#0000ff"><br>
</font></div>
<div><font color="#0000ff"><x-tab>
</x-tab>Cast Iron<x-tab>
</x-tab>0.00000655 (typical iron plate
material)</font></div>
<div><font color="#0000ff"><x-tab>
</x-tab>Carbon Steel<x-tab>
</x-tab>0.00000633 (SAE 1085 piano wire)</font></div>
<div><font color="#0000ff"><x-tab>
</x-tab>Titanium<x-tab>
</x-tab>0.0000049 (Richard's 'interesting' plate
material)</font></div>
<div><font color="#0000ff"><br>
</font></div>
<div><font color="#0000ff"><i>Source: Machinery's Handbook (21st
Edit.
- page 2270)</i></font></div>
</blockquote>
<blockquote cite="mida06110401bd44f9d011fb@%5B10.0.0.68%5D" type="cite">
<div><font color="#0000ff">My apologies for the length of this
post.</font></div>
</blockquote>
Not at all.. I enjoyed very much reading every word.<br>
<blockquote cite="mida06110401bd44f9d011fb@%5B10.0.0.68%5D" type="cite">
<div><font color="#0000ff">Sincerely,</font></div>
<div><font color="#0000ff">Ron O.</font></div>
<x-sigsep></x-sigsep></blockquote>
Cheers<br>
<br>
RicB<br>
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