Dear Bruno
Martin Shepherd was particularly suggesting the use of KF on the 5th
course of a Renaissance lute. This is what Jacob Heringman sometimes
uses combined with nylgut on the top courses, and gut diapasons below
(http://www.mail-archive.com/[email protected]/msg19947.html). I
don't know why he does not use KF on the top courses, but I imagine
it may be they are a little less bright than nylgut. I would advise
you to ask Martin Shepherd directly about that.
I have an old Savarez catalogue, and I have tried to compare across
examples of stringing of various instruments in Nylon and KF, sorry
there are no examples of carbon, as such. There is no comparative
table in the catalogue, which seems strange, and comparing across
examples of stringing of actual instruments gives only a very
approximate equivalence, as the other strings used can also vary
slightly and contribute something to the overall tension.
It seems that compared to nylon the KF have a greater weight by unity
of length (same as carbon I suspect), as where on a 13c Baroque lute,
strung to give an average tension of 2,7KG, at diapason 415 Hz, the
first course at Fa-F is given as nylon diameter NN40, it is KF 33;
the 2nd course at RE-D is given at NN47, but KF41, the third course
at LA-A , is given as NN60, but KF50, the fourth at FA-F is given as
NN74, but KF66.
From other instruments, I find the following approximate
equivalences, but these can only give a rough guide. Someone in the
list may know the exact density value. If you would prefer, I can try
to ask Svarez the answer, but I expect they would answer to an
English message ([EMAIL PROTECTED]).
Looking at other instruments, I find the following substitutions of
nylon for KF (but again, the other strings do not always remain
absolutely identical, so these substitutions can only be an indication).
NN40 : KF 33
NN47 : K41
NN55 : KF43
NN60 : KF50
NN64 : KF52
NN68 : KF57
NN63 : KF52
NN74 : KF66
NN100 : KF86
Perhaps you can work out an average comparative rating from this to
apply, to other values, which might be close enough to reality to be
used as a working hypothesis. I expect you can easilly find an
equivalence between nylon and Pyramid Carbon, so that could be a help.
I am sure others would be interested in your experiments, as I do not
hear very much about these strings. They may not be suitable for all
courses, but Martin Shepherd seems to have experience with many
string types, and the fact that he finds KF very good, at least on
some, would be a good recommendation.
Best regards
Anthony
PS I sent a message to Savarez, but it is the 15th of August today (a
French national holiday), so I doubt whether I will get a rapid reply.
Le 15 aout 07 =E0 04:34, Bruno Correia a ecrit :
>
>
> Dear Anthony,
>
>
> Reading your message I became curious to try these strings by
> Savarez. Unfortunately my French is very poor. Do you know by any
> chance the density of these strings? Are they similar to the carbon
> strings by Pyramid?
>
> Best wishes.
>
>
> > I would be much in favour of more research into synthetics that come
> > closer to gut. Martin Shepherd told me that Savarez KF strings are
> > close indeed to having the best properties of gut, http://www.mail-
> > archive.com/[email protected]/msg19947.html
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