Predicting string behavior

[Alan W Deverell]

I have NOT yet seen Wayne Stuart's Bridge Agreffe at close enough
quarters and there is insufficient detail on any of the materials he
has sent to me. I would presume that he has taken out patents for his
device. I hope to pay him a visit before the year is out both to try
his pianos and talk to him at length.

AlanD

>-----Original Message-----
>From: owner-pianotech@ptg.org
>[mailto:owner-pianotech@ptg.org]On Behalf
>Of David Porritt
>Sent: Sunday, August 30, 1998 12:04 PM
>To: pianotech@ptg.org
>Subject: Re: Predicting string behavior
>
>
>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
>
>
>
>--
>_______________________________________________
>
>David M. Porritt, RPT
>Meadows School of the Arts
>Southern Methodist University
>Dallas, Texas
>_______________________________________________
>
>
>