Hi Ron N, Just noticed that you posted in response to Mark's question also. Interesting that our formulas differ a little in the percentage break calculation. I think from memory I'm using the numbers from Al Sanderson. It would be interesting to test the wire for breaking strain against the formula some time. Ron O. >>note string diameter speaking length >> # 75 (B6) .033" (#14) 105mm > > > >>#80 (E7) .033" (#14) 80mm > >#75 0.033" 105mm 188lb 68% >#75 0.032" 105mm 176lb 68% > >#80 0.033" 80mm 173lb 63% >#80 0.032" 80mm 163lb 63% > >Break% doesn't change appreciably with wire size at a given pitch, >but tension does. > >Ron N -- OVERS PIANOS - SYDNEY Grand Piano Manufacturers _______________________ Web http://overspianos.com.au mailto:ron at overspianos.com.au _______________________
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