string termination

[Richard Moody]

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Your pictures show an interesting concept of how to keep a piano string =
from
buzzing on top of the bridge (without to much down bearing) .  Is this =
an
agraffe on the bridge?  How is it actually mounted?  Threaded, or driven =
or
glued?  How does this sound?   It must be acceptable as in better than
digital.   These days most digitals are beginning to sound better than =
most
grands under 5'2" at least through loud speakers (including sound
reinforcement).  =20

=20

The other concern (theoretical) is that a string resting on a bridge by
itself transmits its vibrations directly.  A string going through a big
brass agraffe must also move the mass of that agraffe which might be =
many
times more than the string itself so I wonder what the acoustic or sonic
effect might be?   I would love to hear it because it seems such an =
object
might be made to solve the problem of down bearing controlled to .001 =
inch
for each string. =20

                              ---ric=20

=20

-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On =
Behalf
Of Overs Pianos
Sent: Thursday, August 18, 2005 10:07 PM
To: Pianotech
Subject: RE: string termination

=20

Hi all,

=20

I have been perusing the web for an actual diagram/picture of the Stuart
bridge set up and can't find one....any help on this?

David Ilvedson


Hi David,

=20

A couple of years ago I took some photos of his agraffes and posted them =
to
my website. You can still find them at;

=20

The link below shows his first type of agraffe, which would have a
propensity to rotate the bridges off the panel.

http://overspianos.com.au/strtagr1.jpg

=20

This is his latest agraffe, which is a better design. The silastic is =
there
to control string noise, which is caused by the string vibrating against =
the
sides of the string loading slot.

http://overspianos.com.au/strtagr2.jpg

=20

The basic idea is very good. But the noisy slot problem needs addressing =
(I
have tuned one of these pianos a few times, just in case some of you are
wondering about my familiarity with the design).

=20

Ron O.

--=20

OVERS PIANOS - SYDNEY

   Grand Piano Manufacturers
_______________________


Web http://overspianos.com.au

mailto:ron@overspianos.com.au
_______________________


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