Rob, If you could raise the 2.5 mm and the shank still sat on the felt, that would mean the it is not supported on the jack which is effectively lost motion in a grand. The shank at rest should be above the felt. Norm Barrett Keith McGavern wrote: > Rob, > > I sounds like you have a pretty good handle on things, and Ed has > provided some excellent info. > > Good luck, > > Keith > > On Jun 13, 2009, at 11:45 AM, Rob McCall wrote: > >> Thanks Keith, >> >> Looking through the entire piano (A0 to C8), all the hammer shanks >> appear to be resting on the felts, but this is the only section where >> the felts were being displaced. The blow distance I measured at 50mm, >> book says 47.5mm. Even if they were set at 47.5 I believe they'd >> still be in contact across the entire action. >> >> Regards, >> >> Rob McCall > >
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