Albert,
That was exactly my point, or the point I was trying to ask about with this article. But if this has been discussed a dozen times on Pianotech I shouldn't have posted it w/o looking back.
While Fenner indeed talks about break % and the usual stuff, this notion of length alone as "string elongation", aside from any tension issue in tuning stability, had me wondering... I'm studying it on my own (well, with Vince Mrykalo) and think it is an issue worth looking at.
Jim Busby RPT
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Albert Lord
Sent: Thursday, July 30, 2009 9:35 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] String elongation/Fenner article
On Thu, Jul 30, 2009 at 1:18 PM, Ron Nossaman <rnossaman at cox.net<mailto:rnossaman at cox.net>> wrote:
The greater the elongation under the tension necessary to produce the required pitch, the higher the break%...
I read Fenner to say that longer non-speaking
string segments also increase elongation and
stability as you implied:
the long front scale should mean that the overall string is longer, so the effect of a given string length change (seasonal, from wood reaction to humidity) has a relatively smaller affect on overall string tension, and the unisons should stay in tune better.
with no increase in breaking %age (speaking length
and tension unchanged). So elongation and breaking
%age are not always linked. Do I state this correctly?
Albert
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