Well.. dont know.. but upon directly asking the folks I know at Steinway on two occasions I've been told machine crowned ribs, panel dried out to just under 5%. Curved caul is also correct. I dont think there is any question as to whether or not the board is CC and crown is primarilly panel supported tho. But I'll ask some more in a couple weeks. The annual Nordic Piano Technicians Convention is up and I'm attending and giving a class again. Andre's on the bill this year as well. Folks like Jan Grossbach will be there.. and if anyone knows this kind of thing... he's one of them. Cheers RicB > Farrell wrote: > > Richard wrote: > > "Steinway New York uses machine crowned ribs..." > > I thought it was pretty well established that S&S NY uses flat ribs > glued in a curved caul to a dried board, resulting in a purely > compression-crowned and panel-supported soundboard (CC&PS?). > > Not a clue how the Bostons are designed or built. > > Terry Farrell > > -- Richard Brekne RPT, N.P.T.F. UiB, Bergen, Norway mailto:rbrekne@broadpark.no http://home.broadpark.no/~rbrekne/ricmain.html http://www.hf.uib.no/grieg/personer/cv_RB.html
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