Just to revisit this for a moment--on an RC&S board do you find a significant tonal difference between a board loaded at 250 and one loaded at 800 lbs? David Love davidlovepianos at comcast.net Loading from about 0.75° in the low bass (which in my opinion isn't out of line for an RC&S board with a decent back scale length and no cantilever), to 1.75° at the top will put you in the 800lb range at 40,000 lbs overall tension. A low bass of 0°, to a top end of 1° would get you a tad over 250 lbs, depending on tension distributions and such. I don't see a problem with the higher bearing figures with a rib scale designed to support it. Ron N _______________________________________________ Pianotech list info: https://www.moypiano.com/resources/#archives
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