<!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 6.00.2900.2769" 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=rol= e_document face=Arial color=#000000 size=2> <DIV> <DIV>Something I've learned as a piano student, player, and technician, is t= hat in order for an upright action to operate properly, one must play firmly to = the bottom of the keystroke.  Not loudly, necessarily, but firmly.  If= you don't, bobbling can be a problem, not to mention non-repeating notes from ja= cks hanging up on hammer butts.  </DIV> <DIV> </DIV> <DIV>I have to demonstrate this to many a mother and father from whom I've received that urgent call saying, "Timmy says that there are a few notes sticking."  Which just happen to be the notes he uses in the one piece = he knows how to play.  </DIV> <DIV> </DIV> <DIV>The day of the original post, I tuned an M500 Yamaha, which was the original piano in question I believe.  I could make the hammers bobble = at will, but if I played them correctly, the action worked fine.</DIV> <DIV> </DIV> <DIV>It's important for teachers to understand this about upright actions, b= ut most of them really don't.</DIV> <DIV> </DIV> <DIV>Just my 440 herz,</DIV> <DIV> </DIV> <DIV>Dave S.</DIV> <DIV> </DIV> <DIV>In a message dated 11/3/2005 11:20:30 A.M. Pacific Standard Time, ricbrek@broadpark.no writes:</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>Hi<BR><BR>At just past half blow on the upright piano the jack sh= ould already <BR>sufficiently in motion that by the time the hammer evntually w= ould <BR>bounce back on a slow (but realistic) keystroke the butt should be abl= e <BR>to push it out of the way.  If it cant, then there isnt really al= l that <BR>much that can be wrong. Either its not out far enough for this to= <BR>happen, ie. a regulation issue, or something is preventing it from <BR>moving out easily enough... ie. some resistance in the action.<BR><BR>= I've run into a few Steinway K's and Z's with this problem and I've <BR>solved = it every time by a good regulation and appropriate spring <BR>strenghts. <BR><BR>That said... Crescendo punchings wont really help me thinks in as = much <BR>as one of my earlier attempts was to simply increase key dip 1 mm with= <BR>no real change in the double strike at soft play. I think (not know) <BR>this is because one really isnt playing with all that great a techniqu= e <BR>in the first place and that the situation is bordeline relative to the= <BR>technique of the pianist.<BR><BR>That said again... there are all kind= s of good reasons otherwise for <BR>useing Crescendos... so buy em :)<BR><BR>Cheers</FONT></BLOCKQUOTE></DIV> <DIV></DIV> <DIV> </DIV></FONT></BODY></HTML>