Predicting string behavior

[David Porritt]

Del:

Have you looked at any of the information on the Wapin bridge?

dave

Delwin D Fandrich wrote:

> Alan W Deverell wrote:
>
> > Wayne Stuart has done this - a agreffe styled device replacing the
> > conventional bridge pin - now used on all his grands.
> >
> > http://www.newcastle.edu.au/department/fmu/stuart1.html
>
> ----------------------------------------
>
> Many builders have done this over the years.  Sohmer and Hallet & Davis come
> quickly to mind -- I don't know if it has been done in European pianos.  Most of
> these devices also have problems.  For one, they are notoriously hard on
> bridges.  The only one I've encountered so far that has survived intact for some
> years has been one of the Sohmer designs.  That one worked quite well but must
> have been quite difficult to build.  (It required some fairly complicated bridge
> work aft of the agraffe.)
>
> I would like to know more about the device used in the Stuart piano.  The
> photographs in Mr Stuart's web site do not have enough detail to be very
> informative.
>
> I have worked on such devices on and off for some years.  So far I haven't come
> up with anything I've been overly happy with, but I dislike the traditional
> bridge pin arrangement enough to keep trying.  If Mr Stuart's device works well
> and proves to be viable (i.e., reliable) over the long haul, my hat is off to
> him.
>
> Regards,
>
> Del



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David M. Porritt, RPT
Meadows School of the Arts
Southern Methodist University
Dallas, Texas
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