Math/Physics Problem: degrees of rotation of tuning pin = howmuchpitch change

[John Ross]

I stand corrected. :-(
I must remember, that just because, I think that it is too involved, to be 
worth while, others don't.
Who is it said, 'enquiring minds want to know"?
I was thinking of even the pin sizes vary, within a box by a few thou.,that 
the information gained would vary enough to change things. etc.
John Ross
Windsor, Nova Scotia, Canada
jrpiano at win.eastlink.ca
----- Original Message ----- 
From: "Ron Nossaman" <rnossaman at cox.net>
To: "Pianotech List" <pianotech at ptg.org>
Sent: Saturday, March 29, 2008 6:49 PM
Subject: Re: Math/Physics Problem: degrees of rotation of tuning pin = 
howmuchpitch change


>
>> *I would wonder, why, with all the variables, would you be interested?*
>> *It can obviously be done, but to what end?*
>> John Ross
>
> I don't know why Kurt would be interested, but I was, and am. The 
> variables are just that - variables in the equations, to be measured and 
> plugged in. I set up a spreadsheet for my own edification, using the 
> readily available string scaling formulas. I figure that if these formulas 
> can give you a close enough approximation of tension and elongation from 
> diameter, length, and pitch, they can be rearranged to produce a close 
> enough approximation of pitch change from the other direction with an 
> elongation length change. Why the interest? it's called education. I like 
> to be able to generate "good enough" answers, whenever possible, to my own 
> wonderings.
>
> Ron N
>