<html> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; = charset=us-ascii"> <meta name=Generator content="Microsoft Word 10 (filtered)"> <style>  </style> </head> <body lang=EN-US link=blue vlink=blue> <div class=Section1> What about depressing the hammer = through letoff, and drop, then seeing how much play is still in the = hammer?  It seems that after the action has gone through all of it’s motions, anything else is “aftertouch”.  I’ve always used = this as a quick way to see if there’s aftertouch.  As a general rule, = I want aftertouch to be equal to drop.  What I mean is, if after letoff, = the hammer drops 1/16”, then it should rise back up to = letoff.   It’s very easy to tell when = there’s no aftertouch, just by playing the piano.     Jonathan Finger = RPT   -----Original = Message----- From: = pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of Bob Hull Sent: Friday, March 14, = 2003 11:49 PM To: pianotech@ptg.org Subject: Aftertouch = evaluation   I am wondering about the value of different = methods of evaluating aftertouch on a grand. I know one method is to add punchings = on top of those on the front rail pin until let-off can't take place; = Another method I've heard of and used is to = look at the final position of the jack in relationship to the knuckle and jack = cushion after drop - but this can't be done with the action in the piano;  = The next method (which I don't think I've read about anywhere) is my = question to the list:  Can you accurately evaluate aftertouch by traveling = the key/hammer through drop and then moving the jack tender downward to see = how far the jack travels before being stopped by the jack = cushion? Also, if you are using the addition of = punchings on the front rail pin until let-off fails, what are some good parameters to = stay within for "good" aftertouch, i.e. .050 - .060 ?  I know = the Steinway manual says that a good amount is about the thickness of a new penny.  How far can we stray from that measurement and still be = alright? Bob   <div class=MsoNormal align=center = style='margin-left:.5in;text-align:center'> <hr size=1 width="100%" align=center> </div> Do you Yahoo!? <a href="http://rd.yahoo.com/webhosting/mail_tagline/evt=7748/*http:/web= hosting.yahoo.com/ps/wh3/prod/">Yahoo! Web Hosting</a> - establish your business online </div> </body> </html>