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<title>Re: CAUT] Shank Pitch</title>
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hi David,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Have you indeed done studies to “prove”
that different pinning friction has a direct affect on tone? If so, have you
published it? Chris Robinson and Rick Baldassin did some experiments about 20
years ago but didn’t do anything they felt was worth publishing. Tone and
flange friction has been at the heart of many discussions here, but something definitive
on the topic would be great to have. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>The student here (BYU who is doing some scientific
studies could definitely use these flanges.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks for all you do for the piano world!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Regards,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Jim Busby BYU<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>David C. Stanwood<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, February 25, 2008
12:41 PM<br>
<b><span style='font-weight:bold'>To:</span></b> caut@ptg.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [CAUT] CAUT] Shank
Pitch</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hi Ric,<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I'm using the adjustable hammer flange friction bolts as teaching tools
these days... If any of you are serious and want to experiment I'd be
happy to provide some samples.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>David Stanwood<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt' type=cite cite>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt' type=cite cite>
<p class=MsoNormal><font size=1 color=black face=Times><span style='font-size:
7.5pt;font-family:Times;color:black'><br>
</span></font><font size=1 color=black face=Courier><span style='font-size:
7.5pt;font-family:Courier;color:black'>Hi Jim.<br>
<br>
Point taken, and I think I understood you from the beginning. I'm<br>
assuming that the kind of differences in tone that a looser pin will<br>
make are different then a shank with a soft spot causing an abnormally<br>
low resonant frequency. But, since I dont know more specifics about<br>
what Chris was exactly getting at... I'll have to reserve further<br>
judgement until I get a chance to try this out myself.<br>
<br>
Sorting by frequency ahead of time is indeed easier then sorting by<br>
weighing. And all this has gotten my head a scratch'n again :)... so on<br>
the set of D shanks I'm about to weigh I will cross check just for the<br>
sake of interest. I have a set of weighed shanks ready to install for a<br>
Bechstein B also... I can check the resonant frequencies of them and<br>
cross check them as well. Should go fast enough.<br>
<br>
Most certainly tho... if Chris has demonstrated that pinning can effect<br>
shank resonant frequency... then these are best sorted ahead of time. <br>
I've heard of the adjustable friction flange... but never tried them...<br>
so I cant speak as to how they work. Perhaps Stanwood himself may chirp<br>
in here.<br>
<br>
Cheers<br>
RicB</span></font><o:p></o:p></p>
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