down to the wire

[paulrevenkojones at aol.com]

 JD:

Do you know of any resource which has comparative %'s of the elements in different steel wire from different manufacturers? Or is this information just too difficult to come by? 

Paul


 


 

-----Original Message-----
From: John Delacour <JD at Pianomaker.co.uk>
To: Pianotech List <pianotech at ptg.org>
Sent: Tue, 23 Oct 2007 6:07 pm
Subject: RE: down to the wire









At 11:59 -0500 23/10/07, Porritt, David wrote: 
 

>JD: 

> 

>Do you have any experience with Pure Sound wire?  Comments? 
 

I have no direct experience of it but am interested in others' 
experience of it, which I pick up from various quarters, including on 
this list, and I have so far had no reason on that basis to be 
convinced of its qualities, which are very vaguely advertised.  I 
keep an open mind on it, but am more interested in cast steel wire of 
various tensile strengths from other sources.  For strings in the low 
bass of short pianos, where the tension is normally a low percentage 
of the yield point, I think almost certainly a core wire of wire with 
lower tensile strength can give improved tone and I am about to take 
my experiments a little further, since the little work I have done so 
far is quite promising. 
 

For much of my work, however, at least as regards bass string making, 
I need wire that has a _higher_ tensile strength, such as the old 
Poehlmann wire, since many old scales from good makers such as 
Schiedmayer,Blüthner, Rittmüller etc. were designed for higher 
tensions than the R wire will withstand. 
 

I have a suspicion that what is lacking in modern wires is 
(certainly) not chromium but more likely nickel.  We shall see. 
 

JD 
 



 


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