<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=iso-8859-1" = http-equiv=Content-Type> <META content="MSHTML 5.00.2722.2800" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV>Bill,</DIV> <DIV> </DIV> <DIV>These specs below should let you regulate almost any grand if its = parts are in reasonably good condition. Pay very close attention to the knuckles = for roundness, firmness, and as dirt/graphite free as possible. Poorly = shaped knuckles are a major cause of unstable regulations. Before you start, = make sure you have some spring, drop, and hammer blow (thickness of shank off = the rest block will work) on every note. If all three are not present, the = note will not regulate.</DIV> <DIV> </DIV> <DIV>Natural key height will be in the vicinity of 2 1/2"; sharps = approx. 1/2" above naturals.</DIV> <DIV>Hammer blow will be in the vicinity of 1 3/4" to 1 7/8".</DIV> <DIV>Dip will be in the vicinity of 3/8".</DIV> <DIV>Let-off will be around 1/16 in the treble, slightly more in the = bass. Best is as close to string as possible without blocking and without leaving = it in potential danger of blocking after you've finished.</DIV> <DIV>Drop will be proportionate to let-off.</DIV> <DIV>Backcheck height should be as high as possible.</DIV> <DIV> </DIV> <DIV>Set samples in each section to see which parameters work. Fudge = where necessary only when you understand why/where you are fudging. :-) = Once you find the parameters that work, set the remainder to the samples.</DIV> <DIV> </DIV> <DIV>Gina</DIV> <DIV>(Very condensed version, courtesy of mine and Roger's Interactive = Grand Regulation series. <g>)</DIV> <BLOCKQUOTE style="BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: = 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: = black"><B>From:</B> <A href="mailto:lokman@ix.netcom.com" = title=lokman@ix.netcom.com>Bill Peterson</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A = href="mailto:pianotech@ptg.org" title=pianotech@ptg.org>pianotech@ptg.org</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, July 23, 2000 = 5:03 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Mehlin 6' action = specks wanted.</DIV> <DIV><BR></DIV> <DIV><FONT face=Arial size=2>Hello out there would any of you = piano people out there in piano land help me with regulating specks for a a1928 Mehlin = 6' grand.  I looked in the piano action handbook and found = nothing.  </FONT></DIV> <DIV> </DIV> <DIV><FONT face=Arial size=2>Thanks, Bill Peterson, Associate</FONT></DIV></BLOCKQUOTE></BODY></HTML>