[pianotech] Getting started in figuring scaling

[Stéphane Collin]

Hi Julia.

 

You would probably be happy with the famous articles of Dave Roberts named
“The Calculating Technician” printed in the Journal long ago.

 

This is an occasion for me to ask other listees if there has been some
evolution since.  I must say that I found Robert’s formulas very, very
empirical and simplified at every level, no doubt, with the ease of the
workshop efficiency in mind, but at the cost of universality.

 

I found the work of Michael Latcham “The Stringing, scaling and pitch of
Hammerflügel built in the southern German and Viennese traditions”
(Musikverlag Katzbichler – München – Salzburg), while dedicated to the
fortepiano, very informative on the very problems of scaling (metallurgy,
bass foreshortening, treble stretching, struts problems, wound strings), and
on some historical options to solve them.

 

Best regards.

 

Stéphane Collin.

 

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of KeyKat88 at aol.com
Sent: lundi 3 novembre 2008 19:06
To: pianotech at ptg.org
Subject: [pianotech] Getting started in figuring scaling

 

Greetings,

 

      Is this the formula used for scaling.. or are other formulas used as
it relates to pianos and piano scaling? 

 

f = 1/2L ^T / m/l

 

where;

 

f = fequency

L = effective length of wire

T = tension

m/l = unit of mass per length of wire  

 

  What is some suggested reading about this?

 

 

Thanks, 

Julia Gottshall

Reading, PA





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