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
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