soundboard springs

[Isaac OLEG]

The Grijalva Treble Resonator (designed by Bob Grijalva)is an
interesting idea, I wonder what happens to the wooden stick link
between the belly rail and the rim when it is used (as it is regulated
to stiffen this side, and the wood stick is then less tensioned (is it
?)

I will try one probably in a month or so.

Regards.

Isaac OLEG

P.S I have 	a few pics if some are interested in.


> -----Message d'origine-----
> De : caut-bounces@ptg.org [mailto:caut-bounces@ptg.org]De la part de
> ed440@mindspring.com
> Envoyé : jeudi 5 décembre 2002 22:55
> À : College and University Technicians
> Objet : Re: soundboard springs
>
>
> Pianotek is selling a turnbuckle device that connects the
> belly rail in the
> treble to the rim.
> It looks somehat like a one armed Mason & hamlin spider.
> They make it in a
> "B" size and a "D" size.  Bob Marinelli says it does a good
> job of improving
> the treble sustain.
> Has anyone on the list tried this device?
> Ed Sutton
>
> On Wed, 04 Dec 2002 18:52:54 -0600 "David M. Porritt"
> <dm.porritt@verizon.net>
> wrote:
>
> > I've been inspired!  I have a client, a
> > university in East Texas that
> > has a 5 year old "D" that is dead. 
> > Sustain is gone.  I have a "B" and
> > a "D" here that are 9 years old.  The "B"
> > is not dead yet, but the vultures
> > are circling.
> >  
> > I read in the archives again last night the
> > post from Del of April 2001 on
> > putting the sounding board springs in. 
> > I've ordered the springs from
> > McMaster and I've remembered I have some nice
> > "L" shaped maple that can serve as
> > the mounts for the system.  This maple had
> > a former life as damper lifter
> > trays. 
> >  
> > I hope to be able to bring a little life to our
> > two pianos here, then try
> > it on the East Texas piano.  When you
> > think about $200,000 worth of less
> > than 10 year old pianos in this shape, you
> > really want to do something,
> > anything!  I like the fact that I can just
> > remove the additional apparatus
> > if this doesn't make an improvement.  If I
> > do it over winter break and it
> > doesn't work, no one will ever know.  If
> > it does work, I'll make sure
> > everybody knows!!
> >  
> > I'll let you know how it goes.
> >  
> > dave
> >
> >
> > _____________________________
> > David M. Porritt
> > dporritt@mail.smu.edu
> > Meadows School of the Arts
> > Southern Methodist University
> > Dallas, TX 75275
> > _____________________________
>
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