[pianotech] Helping out a GH-1

[Ron Nossaman]

On 9/27/2010 5:41 PM, Barbara Richmond wrote:
> Thanks, Allan.
>
> I understand about humidity control, but I was under the impression that
> the scale design deficiencies of those notes in low tenor do affect how
> far and quickly they go out of tune--they're touchy, right?

Yes, and I think that's what he's saying. Getting rid of those low 
break% low tenor notes improves stability across the break tremendously.

I've only done one of these. Four bichords, added two hitches, and left 
the original trichord agraffes. Changed the affected dampers too, of 
course. No other rescaling, restringing or anything else. It was just a 
low tenor conversion. It seems to me I hung about 100g of brass under 
the low end of the bridge too.

It makes them less awful, but since you can't change the speaking 
lengths, the wraps get down to about 0.008" on the last bichord. For 
what it's worth.

Ron N