---------------------- multipart/alternative attachment Del, Thanks for the information. I appreciate you taking the time to reiterate old news..:-). Dave Stahl In a message dated 4/28/03 1:54:27 PM Pacific Daylight Time, pianobuilders@olynet.com writes: > > >> ----- Original Message ----- >> From: <A HREF="mailto:Piannaman@aol.com">Piannaman@aol.com</A> >> To: <A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A> >> Sent: Monday, April 28, 2003 6:52 AM >> Subject: Re: hammer velocity >> >> >> Joe, >> >> If you figure the jack is pushing on the knuckle, it would be causing the >> shank to bend backwards(downward). When let-off occurs, I'd think that >> the hammer head would then catch up with the rest of the shank.... >> >> I'm just suggesting this as a possibility. I claim no extensive knowledge >> of physics..... >> >> Dave >> >> >> > Sigh. It's back to the Journal again. Only at pianissmo is there a direct > relationship between the motion of the key end and the hammer. Since this > is typically what we see at the regulating bench we make the asumption that > this is what occurs in the piano under normal play. In fact as one > approaches forte the key motion precedes that of the hammer by an > increasing amount. Indeed, in a typical "modern" concert grand the keys in > the bass up through the mid-range will have fully bottomed somewhat before > the hammer begins to move. From that point on energy is moving through the > system and is being delayed by the compression and flexing of the various > action components. At this point there is no longer any hope for subtlty. > > Del > > >> >> >> > > ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/6a/93/5e/be/attachment.htm ---------------------- multipart/alternative attachment--
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