This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment ----- Original Message -----=20 From: Piannaman@aol.com=20 To: pianotech@ptg.org=20 Sent: Monday, April 28, 2003 6:52 AM Subject: Re: hammer velocity Joe,=20 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....=20 I'm just suggesting this as a possibility. I claim no extensive = knowledge of physics.....=20 Dave=20 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/c7/c0/10/23/attachment.htm ---------------------- multipart/alternative attachment--
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