> > Escapement friction is a turnstile. You can reduce the hiccuping by > > fattening the LO. But the size of this friction determines the > > quietist sound one can get out of a piano. So Del, would the > > lubricity of the jack top make a big difference here? > >In the Herz/Erard action I think you are analyzing--none at all. Or at >least very little. > >But, in the Herrburger/Schwander Inverted-center Linked action (as >illustrated in the post I was responding to) I think quite a great deal. >This action has a sliding let-off and a sliding return mechanism. I should >think providing a precise and low friction surface for these two functions >would be important. > >Del What do you mean by a sliding let-off and return? I don't see much difference in the way the jack and rep lever move on this action and on the Herz action. Phil F
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