On Mon, 2 May 2016 10:21:34 -0700, Norm Purdy <[log in to unmask]> wrote:

...
>I'm looking into replacing the p-bronze choir on this instrument with
>beryllium/copper wire.  
>
>Anyone have experience with Beryllium/copper wire?  Little Falls lists
>several alloy ratios, and varying hardening treatments.  I'm supposing
>that their softest alloy ratio, annealed not hardened, would be the best
>choice.

I don't have specific experience with Little Falls, but with b-c from a number of other sources (obscure ones by now, I fear); also with various hardnesses. The harder stuff sounds harsher; the softer b-c (from a [dwindling] quantity of left-over stock in the not-yet-dismantled Skowroneck workshop in Bremen) sounds good, better than some kinds of available brass, and it is absolutely reliable loop-wise: no slipping and it doesn't get brittle over time.
My "oldest" instrument here is a rather-much-played clavichord from the mid-seventies, with its original strings still fully intact.

A little more elaborate is my blog entry on the same topic here
https://skowroneck.wordpress.com/2012/04/26/beryllium-copper-on-the-front-page/

Tilman

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