Twangy pianos + stringing

[Tony Caught]

Hi Jim

I believe that I picked up my comments whilst discussing 'wire twisting'
with an engineer or something. It appears that Reo rods (reinforcing rods in
concrete are often twisted to gain greater structural strength and to
further stiffen the bar so as to give the concrete greater strength. At the
same time if you flex one of these stiffened rods to much, it will break.
something to do with the realigned molecules caused when putting the bar
under stress by twisting.

As said before "must be the gospel truth."

Tony Caught ICPTG
Australia
caute@optusnet.com.au
----- Original Message -----
From: <JIMRPT@AOL.COM>
To: <pianotech@ptg.org>
Sent: Saturday, November 25, 2000 1:13 AM
Subject: Re: Twangy pianos + stringing


> Joe, Tony;
>  I can't help but think that "twisting" a string to increase "breaking
> tension strength" is rather counter intuitive vis a vis any other
formulation
> of steel application. Also I think that anything which "decreases the
> elasticity of the string" by definition 'lowers' the "breaking tension"
not
> "increase" it. "common knowledge" notwithstanding.