Best soudboard shape

[Farrell]

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Regarding the piano soundboard, how is building grand piano soundboard =
different from that of an upright (except of course their final =
orientation).

Terry Farrell
  SNIP

  ..... little understanding of the grand soundboard, and indeed =
building a grand is a  different process than a vertical.

  SNIP

  Isaac OLEG

        Pianotech
        Isaac OLEG
        accordeur - reparateur - concert
        oleg-i@noos.fr
        19 rue Jules Ferry
        94400 VITRY sur SEINE
        tel: 033 01 47 18 06 98
        fax: 33 01 47 18 06 90
        mobile: 033 06 60 42 58 77   =20

        Powered by Plaxo ... Want a signature like this? =20

     -----Message d'origine-----
    De : pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]De =
la part de PIANOS CHAVANNE
    Envoy=E9 : vendredi 5 mars 2004 09:22
    =C0 : pianotech@ptg.org
    Objet : Best soudboard shape


  Hello,
  I am a french piano upright manufacturer and I would like to make now =
a
  grand piano 188 cm lenght.

  I am interested to know what's the best shape to apply to grand piano
  soundboard when gluing ribs in bed tool, is it like a cylinder shape =
where
  bridge is on the top, or may be a sphere shape like upright where the =
top is
  on the middle of bridge ? or something other ?
  Also, what's the best curve amplitude in this case ??
  and for to finish, the best downbearing map from note No 1 to 88 ??
  .
  Many thanks for your help..                Vincent,

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