Quit begging! Just differ. The technical definition of aftertouch as the "distance the jack travels after escapement" (grands) or "the distance the jack has traveled" (uprights) is as easily applied and regulated for in both grands and uprights.? They are both the "after escapement" portion of key travel. The analogs between grand and vertical escapement/aftertouch (distance) are plain and useful whatever academy you're citing. The physical analog between the knuckle and hammer butt are clear, and the differences are, too. So too the family of regulations for them, although with different preferred emphases and order--key height, key travel, blow distance, and let-off. Other fine differences can be made with other regulations. Both the similarities and differences are useful tools to have. Too much emphasis on the differences to the exclusion of the similarities does a disservice to the Academy as a whole. Wishing you well! Paul -----Original Message----- From: Richard Brekne <ricb at pianostemmer.no> To: pianotech at ptg.org Sent: Tue, 17 Jun 2008 5:54 pm Subject: set letoff to get acceptable aftertouch? As I said.... beg to differ. Aftertouch refers to the whole escapement process in the Erard/Herz grand. You might as well call the Bluthner Patent actions escapement a kind of aftertouch. They themselve did not, and still dont. The Yamaha, Kawaii and Steinway Academies and field seminars draw this distinction between the grand and the vertical, as does just about every book I've read on the action regulation. ? With respect, we are wise to keep our P's separated from our Q's. Throwing grand aftertouch and upright escapement into the same box can lead to lots of confusion for those starting out on their first grand regulation. Its a different puppy. And, as said in my response to Dean. Bobbling isolated from blocking in a grand is very difficult to achieve from a jack escapement perspective. Yet easy as pie in a vertical.? ? Forgot to give a heads up on Deans comment about lost motion in the vertical. Good point indeed Dean.? ? Cheers? RicB? ? ? Ok, ok, perhaps too broad a generalization :-), but a really, really? ? common cause. And call it what you like, Ric, the clearance of the? ? jack from the butt in an upright is as much aftertouch as the? ? distance the jack travels after escapement in a grand, and can be? ? felt in the key with a sensitive touch. And can be regulated by the? ? same "family" of aftertouch regulations. With respect...:-)? ? ? P? ? -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20080617/95d0e662/attachment.html
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