Agraffe tuning eaiser or not?

[Delwin D Fandrich]

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  ----- Original Message -----=20
  From: Farrell=20
  To: pianotech@ptg.org=20
  Sent: June 24, 2001 10:07 AM
  Subject: Re: Agraffe tuning eaiser or not?


  Could you please expand on exactly what do you mean when you speak of =
the poor string termination of the capo d'astro bar configuration. What =
is poor about it?=20
Just that it is usually rather inefficient. The length of the duplex =
segment (relative to the speaking length) and the rather shallow string =
deflection angles always allow some energy bleed across the V-bar.=20


  How does it compare to the agraffe? I understand (I think I might =
anyway) about energy losses associated with aliquot systems, but what is =
inherently or potentially bad/inefficient about the capo design compared =
to the agraffe design. Thanks for any thoughts you may have on this.
The agraffe also has some energy losses due to their flexibility and =
their relatively low mass compared to the capo d'astro bar. So, to some =
extent I think you pays your money and takes your chances. I now believe =
both systems can be made in such a way that they might be quite =
inefficient or quite efficient. I'm not sure which is inherently =
superior though I expect the scale is tipped toward a well designed capo =
d'astro bar system, though not necessarily with a V-bar. And certainly =
not with the string deflection angles and duplex lengths we've come to =
expect in the modern piano.=20

I'm also not sure the benifits of this ideal system would be so much =
greater than than a really well designed agraffe system as to be all =
that noticable. We do tend to get hung up on the esoteric that the =
obvious slips right on by.



  Oh, and thanks to Brain Trout, I found your soundboard papers on the =
Journal CD - these are the ones you refer to that start in December =
1997?

That sounds about right. I really didn't keep track of the publication =
dates and all my Journals are temporarily unreachable.

Del


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