<!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 5.50.4134.600" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT size=2>From the information given, I'd guess an oversized = pilot hole. </FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>Let me make a distinction here, as well. It is = possible that a factory might successfully turn the capstans in place. This would be = done with a machine that would precisely grip the head of the capstan holding it = nice an true and then spin the capstan down with no side play on the capstan at all. This is not how we would do the operation in our shops. We = take a capstan wrench -- of whatever type -- and slowly crank the thing down. = They wobble all over the place finding their way down as best they can. </FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>By pressing, rather than turning, the capstan into a = properly sized pilot hole, it is driven straight into the hole without much = damage to the sides of the hole. </FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>I've tried it both ways and have consistently found = those capstans I have pressed home to be straighter and tighter than those I = have turned in.</FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>However, your mileage may vary.... If it works = better for you to turn them home, then that it the proper way for you. We'll keep = pressing on.</FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>Del</FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV> <HR> </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=dnereson@dimensional.com = href="mailto:dnereson@dimensional.com">Dave Nereson</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A = title=pianotech@ptg.org href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> January 07, 2001 11:37 = PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Capstans</DIV> <DIV> </DIV> <DIV>I recently tried to regulate a brand-new Boston studio.  The = capstans wouldn't stay regulated.  I'd regulate them, then after = tuning, there'd be too much lost motion again.  The capstans were being = pushed down into their holes even on a medium-hard blow, and no, I wasn't = pounding the heck out of it.  The factory must've a) drilled the holes too = large, or b) pressed, rather than turned them into their holes.  Or = maybe the holes expanded due to the dry Colorado climate ?      --Dave Nereson, Denver</DIV></BLOCKQUOTE></BODY></HTML>