> The strings all break at the same pitch. > Execpt # 12 and below and #22 and above. I accept that 12.5 to 21.5. The others are not that important anyway. The point of this is that if the speaking length is too long for a given pitch changing the wire size will not change at which pitch the string breaks. A case in point; I took the string lengths from a piano for rescaling before the [piano was dismantled. After new block, new board the strings started breaking in the high treble. Taking new measurement I discovered the rebuilder (not me) mislocated the treble bridge by a considerable amount backways. Fortunately I could prove this with the previous measurements so the rebuilder had to relocate the bridge a bit. Changing wire size would NOT have solved this problem. Another case to point: some pianos being made in a foreign country had a perpetual treble string breakage problem. It was discovered that the bridges were located too far from the capo bar so the tension was way past safe breaking %. Changing string sizes would not have solved this problem either. The manufacturer had to change the design. Those are the points I was trying to make. Than. Newton
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