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Date: | Mon, 22 May 2017 14:15:34 +0200 |
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Yes. It is too long.
There is not much variation of density between
different makes of brass wire. Malcolm Rose
quotes 3.8kg as the maximum recommended tension
for his 0.25 mm (0.010") diameter English Brass wire.
A 630mm long string at 261.6 (and ET middle C at
A = 415.3) would have a tension of 4.79 kg. A
string of the same length with a tension of 3.8kg
would be tuned to the Bb below middle C. Very much touch and go.
An octave higher the figures would be 4.6 kg for
a .23 mm diameter string (max tension for this
string recommended by Rose = 3.2 kg).
Dongsok is correct.
David
At 12:34 22-05-17, dc wrote:
>Le 22/05/2017 12:07, Dongsok Shin écrit :
>>The design was changed at least a few times.
>>But I am certain that if you put all brass on
>>the one you have and try to pull it up to 440
>>you will break strings left and right. Try one and see!
>>Dongsok
>
>Thanks, Dongsok.
>
>Would anyone have the scaling of their all-brass model?
>
>Middle c is 630mm in this instrument and c2 is
>340mm. Is that too long for brass?
>
>Thanks.
>
>Dennis
>
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Note: opinions expressed on HPSCHD-L are those of the individual con-
tributors and not necessarily those of the list owners nor of the Uni-
versity of Iowa. For a brief summary of list commands, send mail to
[log in to unmask] saying HELP .
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