inharmonicity of hex-core wire

[Ed Sutton]

Newton-
I've heard it said (never read) that the inharmonicity of hexagonal wire is
greater than that of round wire "due to the added stiffness of the corners",
and have wondered if hex-core wound strings could be used to smooth the jump
in inharmonicity between wound and plain wire strings when re-scaling small
pianos. (I've seen Knight pianos with hex-core bass strings, but don't know
why they did it.)
If I understand you right, I'm going full speed up a dead end street. Yes?
Ed


----------
>From: nhunt@jagat.com (Newton Hunt)
>To: caut@ptg.org
>Subject: Re: inharmonicity of hex-core wire
>Date: Wed, Sep 20, 2000, 8:01 AM
>

>
>
> Ed Sutton wrote:
>>
>> Does anyone have a formula for calculating the inharmonicity of strings with
>> hexagonal core wire?
>> Thank you.
>> Ed Sutton
> Inharmonicity formulas as based upon the cross sectional
> area of a string.  Essentially the Inh factor would be the
> same.  There may be as much a 8% or 9% increase over the
> difference between the next size up.  In essence the Inh
> will remain the same.  Just use the measurement between to
> opposite faces of the core.
>
>   Newton