<HTML><HEAD><TITLE>Re: regulation problems in Aeolian era M and H= 50"</TITLE> <STYLE type=text/css></STYLE> </HEAD> <BODY> <DIV align=left>I think the jack stop rail interferring is the= problem.   Good thinking Keith.  The jack is= lifting the hammer but the cycle is stopping before the key= bottoms out.   </DIV> <DIV align=left> </DIV> <DIV align=left>David I.</DIV> <DIV align=left> </DIV> <DIV align=left>----- Original message= ----------------------------------------><BR>From: Keith= McGavern <<A= href="mailto:kam544@gbronline.com">kam544@gbronline.com</A>><= BR>To: Pianotech <<A= href="mailto:pianotech@ptg.org">pianotech@ptg.org</A>><BR>Rec= eived: Sun, 19 Dec 2004 17:25:33 -0600<BR>Subject: Re: regulation= problems in Aeolian era M and H 50"</DIV> <DIV align=left><BR>At 9:55 AM -0500 12/19/04, Piannaman@aol.com= wrote:</DIV> <BLOCKQUOTE cite="" type="cite"> <BLOCKQUOTE cite="" type="cite"><FONT face=Verdana color=#000000= size=-1> There was a huge gap between the bottom of the key= and the punching when the key was depressed.  This led to= hammers blocking, bobbling, and a feel that could only be= described as spongy. </FONT></BLOCKQUOTE></BLOCKQUOTE> <BLOCKQUOTE cite="" type="cite"><FONT face=Arial color=#000000= size=-1>Keith,</FONT></BLOCKQUOTE> <BLOCKQUOTE cite="" type="cite"><FONT face=Arial color=#000000= size=-1><BR></FONT></BLOCKQUOTE> <BLOCKQUOTE cite="" type="cite"><FONT face=Arial color=#000000= size=-1>That's what's been causing me problems.  I've= searched and searched, and I can't figure it out.  I've= decreased blow distance, and there was not enough aftertouch and= bobbling hammers regardless of how I tried to regulate= it.<BR><BR>I'll try to get back over there sometime early in the= new year and see what I can figure out.  Very frustrating= piano.  </FONT><BR><FONT face=Arial color=#000000= size=-1></FONT></BLOCKQUOTE> <BLOCKQUOTE cite="" type="cite"><FONT face=Arial color=#000000= size=-1>Thanks for the input.</FONT></BLOCKQUOTE> <DIV><FONT face=Arial color=#000000 size=-1><BR></FONT></DIV> <DIV><FONT face=Arial color=#000000>You're welcome,= Dave.</FONT></DIV> <DIV><FONT face=Arial color=#000000><BR></FONT></DIV> <DIV><FONT face=Arial color=#000000>I would like to add that when= you go back out, to concentrate on finding out what's creating= the interference on just one of the notes, dissect it, so to= speak.</FONT></DIV> <DIV><FONT face=Arial color=#000000><BR></FONT></DIV> <DIV><FONT face=Arial color=#000000>Another thing that comes to= mind: If this huge gap space exists on all 88 notes, then you= have theoretically eliminated the damper system from being the= culprit. If</FONT></DIV> <DIV><FONT face=Arial color=#000000><BR></FONT></DIV> <DIV><FONT face=Arial color=#000000>I envision the possibility of= a jack stop rail device being set too close to the jack levers,= and therefore the jack levers are blocking up against this rail,= preventing the completion of normal key travel.</FONT></DIV> <DIV><FONT face=Arial color=#000000><BR></FONT></DIV> <DIV><FONT face=Arial color=#000000>Whatever is causing the= problem ought to be very obvious, but only after you discover= it.</FONT></DIV> <DIV><FONT face=Arial color=#000000><BR></FONT></DIV> <DIV><FONT face=Arial= color=#000000>Keith</FONT></DIV><X-SIGSEP><PRE>-- </PRE></X-SIGSEP> <DIV>Keith McGavern<BR>Registered Piano Technician<BR>Oklahoma= Chapter 731<BR>Piano Technicians= Guild<BR>USA<BR></DIV></BODY></HTML>