This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Hello Jurgen There, I think, you have it! In a nutshell! My thoughts entirely. Hence = the need for this new approach to action geometry as defined by the felt = used! I drove down the Malahat highway to Victoria in the 60s. What a = beautiful place Vancr Island is!=20 Regards from a beautiful sunny morning in the Sussex Downs Michael G.(UK) ----- Original Message -----=20 From: Piano Forte Supply=20 To: pianotech@ptg.org=20 Sent: Monday, May 09, 2005 3:30 AM Subject: RE: something about aftertouch....... Maybe I overlooked it, but what I haven't seen in recent posts on this = topic is how the compressibility of the front rail punching affects the = aftertouch at different dynamic levels. With a more highly = compressible, less firm punching, the aftertouch changes a lot more = drastically through the spectrum of dynamics, from ppp through fff. If = the piano is regulated at a "medium" blow [please don't jump on me for = this term, I think it is clear to all who want to understand], the = reduction in aftertouch on a very light blow is far more apt to create a = problem with a bobbling hammer (than with a firmer punching). = Conversely, on the same note played fff, aftertouch will surely far = exceed 1 mm [dip and jack/knuckle clearance] and the chances are good = that the jack will bury itself in the jack stop felt. Meanwhile, the pianist is getting completely different tactile = feedback from the key at every different dynamic level. (fluctuation in = key dip, aftertouch, checking height etc., perhaps even repetition) So the question is: HOW firm do we want the front rail punching to be? = Obviously more firm than a sponge and softer than a stack of cardboard = punchings. But beyond that? Perhaps as firm as possible without = compomising the other duties of this punching, such as to keep key thunk = to a minimum. =20 I have done some simple testing, measuring the thickness of a common = (woven) front rail punching and a Crescendo punching with no load = compared to being compressed by weight. In my test, the Crescendo = punching compressed less than half as much as the other one. I can imagine there will be players for whom the feel of the Crescendo = punchings may not be "soft" enough, just as there are those who enjoy = their "loose action" with wobbling hammers. For most others, this new = punching with its crisp, precise feel will enhance their playing = pleasure, if not their performance. Using these punchings will yield a more stable regulation, with an = unprecedented definition of aftertouch as well as greater consistency of = touch throughout all dynamic playing levels.=20 And that can't be all bad... Jurgen Goering Piano Forte Supply ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/76/b2/46/18/attachment.htm ---------------------- multipart/alternative attachment--
This PTG archive page provided courtesy of Moy Piano Service, LLC