[CAUT] wound string spacing

[Fred Sturm]

On Mar 22, 2008, at 6:03 PM, Jurgen Goering wrote:

>   On most pianos, the lowest few bi-chords benefit a different  
> damper felt geometry than the thinner strings further up.  As well,  
> on many pianos the bi-chords are more widely spaced down at the  
> bottom, which is what my original query about the agraffe hole  
> spacing was about.
  	Yes, and really it is nice to have a range of narrow and wide. It  
would be lovely to be able to buy two or three different degrees of  
narrow/wide, all for the same piano. Steinway Ds need some extra  
narrow trichords for the bass wound trichords, completely different  
from the plain wire trichords above the break.
	It's a little hard to know how to measure. Unless you have a lovely  
custom tool for the purpose. I can see inserting a wedge and marking  
and miking, but that would be off by a bit. Are the thicker strings as  
wide as the space (one could see which one fit tightly)? I'm thinking  
you need to have a standard way of measuring if you are wanting to get  
usable results.

Regards,
Fred Sturm
University of New Mexico
fssturm at unm.edu


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