---------------------- multipart/mixed attachment --part1_4c.178ba642.2b6f4f4f_alt_boundary In a message dated 2/2/2003 7:36:12 AM Pacific Standard Time,=20 oleg-i@wanadoo.fr writes: > Subj: RE: Bearing difference on different soundboards=20 > Date: 2/2/2003 7:36:12 AM Pacific Standard Time > From: <A HREF=3D"mailto:oleg-i@wanadoo.fr">oleg-i@wanadoo.fr</A> > To: <A HREF=3D"mailto:Erwinspiano@aol.com">Erwinspiano@aol.com</A> > Sent from the Internet=20 >=20 >=20 >=20 > Thanks much , a very good view. > =20 > I understand that if we see, for instance 1/4 inch crown from below the=20 > board, that does not really mean that having 1/4 distance bearing at the=20 > string rest will absorb the whole crown, it depends of the back string=20 > length vs. the speaking length. > =20 > Do you use this as a "rule of thumb" , or do you go thru that computation=20 > about rear length to know how much distance is allowed before the board=20 > reverse crown ? (as suggested by Nick Gravagne in the articles he write) > =20 > The basic idea of my original post is that as we aim for internal tension=20 > in the board to produce a good tonal response, we may use the more=20 > appropriated process when bearing, and that the bearing on cc crowned boar= d=20 > with nod add that tension (at last in the bass and medium), while on rib=20 > crowned boards, internal tension is very low before down bearing is applie= d=20 > (unless it is build when you glue the board on its perimeter. > =20 > I am very far from truth, or just a little bit .>)=20 > =20 > We too see bearing load applied regularly but without relation to crown=20 > often, and often too I see too much bearing in the killer zone, that tend=20 > to deform even more the panel. The Bob Grihalva add on seem to help well,= =20 > and the result is very clear (cleaner tone and better sustain). > =20 > =20 > Have a nice Sunday > =20 > Stephen is looking for a good place where to have his eyelets made actuall= y=20 > they are too expensive to be sold. his string rests are tunable on a 3mm=20 > zone (1.5 high,1.5 down) , and are 5mm tall, but as they have to be=20 > installed on a metal support to be moved, the final height is more of a=20 > Steinway aliquot scale actually. > =20 > =20 > Best Regards, form snowy Paris ! > =20 > Isaac OLEG >=20 > Entretien et r=E9paration de pianos. >=20 > PianoTech > 17 rue de Choisy > 94400 VITRY sur SEINE > FRANCE > tel : 033 01 47 18 06 98 > fax : 033 01 47 18 06 90 > cell: 06 60 42 58 77=20 >=20 >=20 > >> -----Message >>=20 >=20 --part1_4c.178ba642.2b6f4f4f_alt_boundary An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/caut.php/attachments/e9/70/97/16/attachment.htm --part1_4c.178ba642.2b6f4f4f_alt_boundary-- ---------------------- multipart/mixed attachment An embedded message was scrubbed... From: "Isaac OLEG" <oleg-i@wanadoo.fr> Subject: RE: Bearing difference on different soundboards Date: Sun, 2 Feb 2003 16:36:22 +0100 Size: 20825 Url: https://www.moypiano.com/ptg/caut.php/attachments/83/bd/05/20/attachment.eml ---------------------- multipart/mixed attachment--
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