Stainless Steel Wire

[Annelies Boddin]

If I check with my calculations in the past: for the same gauge on the same
speakinglenght the tension is about O,5 kilogram stronger for pure sound
compared with Röslau. I don't know exactly  about the
yieldingpointdifference.
Also to ad that puresound gets better in sound ( even more clear and
singing) after six months one year: Juan told me something is changing in
the structure. Also the stability of the first pitchraises and final tuning
are much better.
I forgot, : heard a rumour from a friend in Poland that the sound was  dead
after 5 years and the piano had to be restrung, did somebody already
expierence this same dissaster with puresound?
Friendly greetings,
Danny Boddin , Ternat Belgium.
----- Original Message -----
From: "Phillip Ford" <fordpiano@earthlink.net>
To: <pianotech@ptg.org>
Sent: Monday, July 22, 2002 7:55 PM
Subject: RE: Stainless Steel Wire


> >
> > > > The wire is used mostly because of the less tension it
> > needs , and because of the mellower sound it gives.
> > > >
> > >
> > >Lowering tension with normal piano wire will have a "mellower
> > >sound".  There may well be some difference but you cannot compare
> the sound
> > of two wires at different tension.  ALL parameters have to be as
> close as possible to get a
> > >valid comparison.
> > >
>
> I don't understand why this stainless wire should require less tension.
The
> density and young's modulus of stainless steel should be very close to
carbon
> steel.  As I see it, if you want to lower tension when using this
stainless
> wire, assuming you are not changing speaking lengths, then you would have
to
> use a different gage than was originally there.  Making tone comparisons
after
> a change like this seems a dicey proposition.  You're comparing apples to
> oranges.  Perhaps this is the same thing that Newton was saying.  If so,
my
> apologies for reiterating.
>
> Phil F
>
>
>
>
> Phillip Ford
> Piano Service & Restoration
> 1777 Yosemite Ave - 215
> San Francisco, CA  94124
>
>