Except Jon says that only a few of them feel that way. In fact, the question he asks is too general to be able to offer a "cure". If he had a particular piano in front of him, he could try any number of steps. -Check jack position under knuckle. -Shape and or position of particular knuckle. Sometimes they're not consistently alligned. (New or worn?) -Friction at action centers - jack, wippen, shank, damper lever. -Timing of jack / rep. lever contact. -Clearance of knuckle by jack -Rep. lever height -Strength of rep spring -Damper timing and stop rail clearance But will we ever know? David Skolnik At 05:23 PM 11/4/2006, you wrote: >Jon, > >When you say spongy, I'm led to think that the front rail punchings >are what you're talking about. Try a set of Wurzen felt punchings >(<http://www.pianofortesupply.com/>http://www.pianofortesupply.com/) >and see if that helps. > >Key dip is typically 10 mm, a bit more than 3/8". Aftertouch might >be a little less than 1/8" (of key dip); check for the jacks >clearing the knuckles by a 1/32". > >Tom Cole > >J W Stein wrote: >>Hi Folks, >> >> >>Here is a question regarding regulation of aftertouch when >>depressing keys. When regulation actions, I like to break key >>movement into eighths. I figure that most normal key depths are >>3/8 inches. Thus, the first 2/8 of movement is smooth..then there >>is that last 1/8 if aftertouch. I like to feel the slight >>hesistion (clicking feel). However, there are times when that >>aftertouch feels too spongy regardless of what I do....jack >>regulations, drop, let off, etc.... About the only thing that >>seems to help is a slight increase of depth....but why would most >>keys have the "normal" feel of aftertouch, while a few are >>unresponsive...????? >> >> >>Any ideas? >> >>Jon >> -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20061104/92abcd3c/attachment.html
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