<!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 name=GENERATOR content="MSHTML 8.00.6001.19088"></HEAD> <BODY> <DIV><SPAN class=524295521-21012012><FONT color=#0000ff size=2 face=Arial>Hi Ed,</FONT></SPAN></DIV> <DIV><SPAN class=524295521-21012012><FONT color=#0000ff size=2 face=Arial></FONT></SPAN> </DIV> <DIV><SPAN class=524295521-21012012><FONT color=#0000ff size=2 face=Arial>Sorry for the delay in answering as we are at the NAMM Show and it is quite hectic schedule at times.</FONT></SPAN></DIV> <DIV><SPAN class=524295521-21012012><FONT color=#0000ff size=2 face=Arial></FONT></SPAN> </DIV> <DIV><SPAN class=524295521-21012012><FONT color=#0000ff size=2 face=Arial>First of all, did you check the gram resistance of the jack without the spring?  Measure at the jack tender and it should be .5 to 1.5 grams of resistance.  Next, check the gram resistance of the repetition lever (without spring).  Measure at the let-off pad and it should be 4-8 grams.  You must have an accurate dial type gram gauge with not too high range for a good reading.  I suggest a 10 gram range maximum.</FONT></SPAN></DIV> <DIV><SPAN class=524295521-21012012><FONT color=#0000ff size=2 face=Arial></FONT></SPAN> </DIV> <DIV><SPAN class=524295521-21012012><FONT color=#0000ff size=2 face=Arial>Our springs are made of stainless steel and most pianos use Phosphorus Bronze for rep springs.</FONT></SPAN></DIV> <DIV><SPAN class=524295521-21012012><FONT color=#0000ff size=2 face=Arial></FONT></SPAN> </DIV> <DIV><SPAN class=524295521-21012012><FONT color=#0000ff size=2 face=Arial>Hope this helps,</FONT></SPAN></DIV> <DIV><SPAN class=524295521-21012012><FONT color=#0000ff size=2 face=Arial></FONT></SPAN> </DIV> <DIV><SPAN class=524295521-21012012><FONT color=#0000ff size=2 face=Arial>Mark</FONT></SPAN></DIV> <BLOCKQUOTE style="MARGIN-RIGHT: 0px" dir=ltr> <DIV dir=ltr class=OutlookMessageHeader align=left><FONT size=2 face=Tahoma>-----Original Message-----<BR><B>From:</B> pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]<B>On Behalf Of </B>Ed Foote<BR><B>Sent:</B> Wednesday, January 18, 2012 6:13 PM<BR><B>To:</B> pianotech@ptg.org<BR><B>Subject:</B> [pianotech] WNG jack don't come back no more, no more, no more.....<BR><BR></FONT></DIV><FONT color=black size=2 face="Georgia, Times New Roman, Times, Serif"><FONT class=Apple-style-span size=2>Greetings,</FONT> <DIV><FONT class=Apple-style-span size=2>   Have finally found a rebuild that can use the new space age WNG composite parts.  However, the jack will NOT return under the knuckle. (Steinway B). All the geometry looks good, and  I have put more spring in than is comfortable to play, raised the rep lever until there is a noticeable gap between the height of the jack, and when I pull the jack out from under, and let it go, it will not return.  </FONT></DIV> <DIV><FONT class=Apple-style-span size=2>    This is a problem I noticed on a lot of the Baldwin Renner actions years ago.  Has anybody with WNG experience dealt with this before? </FONT></DIV> <DIV><FONT class=Apple-style-span size=2>Thanks,<BR></FONT><BR> <DIV style="CLEAR: both; FONT-SIZE: 13px"><FONT color=black size=2 face=arial>Ed Foote RPT<BR>http://www.piano-tuners.org/edfoote/index.html</FONT></DIV><BR> </DIV></BLOCKQUOTE></FONT></BODY></HTML>