[pianotech] String elongation/Fenner article

Albert Lord lordpiano at gmail.com
Thu Jul 30 21:34:59 MDT 2009


On Thu, Jul 30, 2009 at 1:18 PM, Ron Nossaman <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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