The Soundboard bit.. RC&S

[Farrell]

Yes, absolutely, except for one glaring inconsistensy:

"I don't think there is a RC&S board piano being produced commercially. I expect that to change, hopefully soon."

Charles Walter piano company (Indiana) builds two grand pianos that have RC&S soundboard designs.

Terry Farrell
  ----- Original Message ----- 

    William
    Good clear post.  We should save this as a definition has been asked for about  3 times this week & it is a good descrpition of the various design processes we frequently speak of.
    Sincerely
    Dale
    Paraphrasing from the weeks discussion:

    Steinway NY builds CC boards, and most everyone else on the planet builds RC boards. A few of us small shop rebuilders are designing, building, and installing RC&S boards. Currently, I don't think there is a RC&S board piano being produced commercially. I expect that to change, hopefully soon.

    RC & S does not require the soundboard panel (and ribs) being dried prior to glue-up to the extent that the classical RC method calls for.  RC&S needs no help from panel compression to support string bearing.

    The purpose of designing crown into an RC&S board is to provide an opposing spring for the string downbearing, just like with RC and CC boards (and to prevent cracking in the dry seasons). The difference is that the crown support comes pretty much entirely from the ribs in the RC&S boards, and either partially or entirely from the panel in RC and CC boards (respectively).

    Hope it helps.
    William R. Monroe
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