<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; = charset=iso-8859-1"> <META content="MSHTML 6.00.2800.1400" name=GENERATOR> <STYLE>@font-face { font-family: Tahoma; } @font-face { font-family: Book Antiqua; } @page Section1 {size: 8.5in 11.0in; margin: 1.0in 1.25in 1.0in 1.25in; } P.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman" } LI.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman" } DIV.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman" } A:link { COLOR: blue; TEXT-DECORATION: underline } SPAN.MsoHyperlink { COLOR: blue; TEXT-DECORATION: underline } A:visited { COLOR: purple; TEXT-DECORATION: underline } SPAN.MsoHyperlinkFollowed { COLOR: purple; TEXT-DECORATION: underline } P.MsoAutoSig { FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman" } LI.MsoAutoSig { FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman" } DIV.MsoAutoSig { FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman" } SPAN.emailstyle17 { COLOR: windowtext; FONT-FAMILY: Arial } SPAN.EmailStyle19 { COLOR: navy; FONT-FAMILY: Arial } DIV.Section1 { page: Section1 } </STYLE> </HEAD> <BODY lang=EN-US vLink=purple link=blue bgColor=white> <DIV><SPAN class=620215418-25072005><FONT face=Arial color=#0000ff = size=2>Thanks Chris,</FONT></SPAN></DIV> <DIV><SPAN class=620215418-25072005><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=620215418-25072005><FONT face=Arial color=#0000ff = size=2>I'll save your post and look up the others you mention.</FONT></SPAN></DIV> <DIV><SPAN class=620215418-25072005><FONT face=Arial color=#0000ff = size=2></FONT></SPAN> </DIV> <DIV><SPAN class=620215418-25072005><FONT face=Arial color=#0000ff = size=2>Mark Cramer,</FONT></SPAN></DIV> <DIV><SPAN class=620215418-25072005><FONT face=Arial color=#0000ff = size=2>Brandon University</FONT></SPAN></DIV> <BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px"> <DIV class=OutlookMessageHeader dir=ltr align=left><FONT = face=Tahoma size=2>-----Original Message-----<BR><B>From:</B> = caut-bounces@ptg.org [mailto:caut-bounces@ptg.org]<B>On Behalf Of </B>Chris Solliday<BR><B>Sent:</B> Thursday, July 21, 2005 7:44 PM<BR><B>To:</B> = College and University Technicians<BR><B>Subject:</B> Re: [CAUT] Steinway = stack height<BR><BR></FONT></DIV> <DIV><FONT face=Arial size=2>Gravity works better to keep the = tails too low too long so the repetition lever miss fires and the backcheck locks it = all up. I think you'll find an even better explanation from Jim Ellis in the = archives. I think also Ric Brekne had some interesting things to say as = well at that time. It was about six or eight months ago if my memory is functioning. This phenom can be associated with loose rep centers or = too weak a spring or hammers too high off the cushion at rest. The old = metal "bridle" they used to put on wippens kept it from happening. Also if = your hammers are too heavy and the action ratio too low and the the = key dip too deep you can easily get this problem on hard fast repetition low = in the key dip. One fix is to raise the stack in the back so lowering it = makes it worse or more likely.  Chris Solliday.</FONT></DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; = BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: = black"><B>From:</B> <A title=Cramer@BrandonU.ca = href="mailto:Cramer@BrandonU.ca">Mark Cramer</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=caut@ptg.org href="mailto:caut@ptg.org">College and University Technicians</A> = </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, July 22, 2005 = 3:06 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> RE: [CAUT] Steinway = stack height</DIV> <DIV><BR></DIV> <DIV><FONT face=Arial size=2>Just a slight caution = regarding lowering the stack height only in the back, it can result in the dreaded = "repetition lock-up." </FONT></DIV> <DIV><FONT face=Arial size=2>Chris</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><SPAN class=060080419-22072005><FONT face=Arial = size=2>Great discussion!</FONT></SPAN></DIV> <DIV><SPAN class=060080419-22072005><FONT face=Arial size=2></FONT></SPAN> </DIV> <DIV><SPAN class=060080419-22072005><FONT face=Arial = size=2>Chris, can you explain "repetition lock-up" and how tilting the stack back can = cause it?</FONT></SPAN></DIV> <DIV><SPAN class=060080419-22072005><FONT face=Arial size=2></FONT></SPAN> </DIV> <DIV><SPAN class=060080419-22072005><FONT face=Arial size=2>thanks,</FONT></SPAN></DIV> <DIV><SPAN class=060080419-22072005><FONT face=Arial = size=2>Mark Cramer,</FONT></SPAN></DIV> <DIV><SPAN class=060080419-22072005><FONT face=Arial = size=2>Brandon University  </FONT></SPAN></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px"><FONT face=Arial = color=#0000ff size=2></FONT> </BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY></HTM= L>