>>>>I wasn't intending to comment on CC vs RC boards here. By >>>>conventional, I meant a board that was intended to to have a positive >>>>crown, which includes every piano I've ever seen (but not every piano >>>>that Dale's ever seen). I therefore felt safe in calling this 'conventional'. >> Phil --These reverse crown boards by the way were so intentionally >> reverse crowned that they must ,as you surmised,have opposite crowned >> ribs (the other direction than usual). The boards must have been pressed >> on a dome. I've seen 5 of these pianos now 4 grands and 2 or 3 upright >> I can't recall the name of all but one was a 1910 Becker. In all cases >> when the strings were off the boards the salad bowl effect remained. It >> wasn't the result of too much bearing . These boards were obviously in >> tension as they had positive bearing but none had significant damage. > > > Dale E Dale, Did you replace the boards on any of these with something similar? Phil Ford
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