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Prout, The duplex segment between the capo and string rest is part of the Pivot termination system. Because piano wire is so stiff, the string pivots at the V-bar and induces movement in the un-struck segment.

You can read all about it in the Steinway Duplex Scale Patent of 1872 and my very own Fully Tempered Duplex Scale Patent #9,117,421.


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Thanks Ed,

I will read both patents.

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Originally Posted by P W Grey
Alfredo,

Yes, I would like you to try putting it into words. I'm not sure I can change habits that have been developed over 40 years (and that seem to work reasonably well) but it is always good to expand one's base of understanding.

Pwg


Hi Peter,

Please find my reply here:

http://forum.pianoworld.com/ubbthreads.php/topics/1326050/41/chas-preparatory-tuning.html

Kind regards,

a.c.
.

Last edited by alfredo capurso; 07/02/17 09:35 AM.

alfredo
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