Hi Del, No arguments on your points at all. How ever the rate of feel, ( the amount of follow) especially from new spriny felt has a big impact. The number of pianos that I have seen with little or no follow is too great to count. >They certainly feel spring pressure on pianissmo. When the notes are being >sustained it is necessary to press against the spring fairly firmly. Add to this correct node points. Just raising or lowering the damper position a few mm at times will do what none of the other solutions will cure. One of the reasons I favour triple dampers. Your point about mass loading the damper head is well taken. I think the Yamaha U1 and U3 models are good examples of well designed damper systems in this respect. Very substantial maple blocks and heads. Regards Roger > a combination of appropriate mass and light spring >pressure will easily do what springs alone can't quite handle. > >Del >
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