<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=US-ASCII"> <META content="MSHTML 6.00.2900.2963" name=GENERATOR></HEAD> <BODY id=role_body style="FONT-SIZE: 10pt; COLOR: #000000; FONT-FAMILY: Arial" bottomMargin=7 leftMargin=7 topMargin=7 rightMargin=7><FONT id=role_document face=Arial color=#000000 size=2> <DIV> <DIV>      HI Jon</DIV> <DIV>    oh,oh,oh...hmm... After touch....see Yamaha definition/class.  Key dip measured where? is always the question that needs to be answered first.  Yamaha's measure 10 mm at the front of the white key.  Steinways & most others I measure at the pin with a gauge fitting between the bottom of the key & the punching. I am a dip priotiy regulator meaning I,m looking for .390 ish dip/total key travel at the pin.  After setting this dip Find a hammer blow distance that will just allow the jack to  just start to  escape when you put a .050 card board punching on top ot the front rail felt.  If you do this on each key as a check you will have quite a uniform feel.</DIV> <DIV>  Also go with Tom Cole's advice about Wurzen punchings.  Regular green one will compress .035 the Wurzen only about .015 even on a hard blow.  It gives a very precise & limited key travel & will also enhance the sound by limiting energy loss in the key.</DIV> <DIV>   Dale Erwin</DIV> <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000000 size=2>Jon,<BR><BR>When you say spongy, I'm led to think that the front rail punching's are what you're talking about. Try a set of Wurzen felt punchings (<A class=moz-txt-link-freetext title=http://www.pianofortesupply.com/ href="http://www.pianofortesupply.com/">http://www.pianofortesupply.com/</A>) and see if that helps.<BR><BR>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". <BR><BR>Tom Cole<BR><BR>J W Stein wrote:<BR> <BLOCKQUOTE cite=mid001001c70051$a322b420$6401a8c0@john12 type="cite"> <META http-equiv=Context-Type content="text/html; charset=US-ASCII"> <DIV>Hi Folks, </DIV> <DIV> </DIV> <DIV> </DIV> <DIV>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...????? </DIV> <DIV> </DIV> <DIV> </DIV> <DIV>Any ideas? </DIV> <DIV> </DIV> <DIV>Jon </DIV> <DIV> </DIV></BLOCKQUOTE></FONT></BLOCKQUOTE></DIV> <DIV></DIV> <DIV> </DIV></FONT></BODY></HTML>