<div>Hi Barbara, </div> <div> </div> <div>For what it's worth, I would not use the Crescendo punchings in this application, although they are great for practically everything else, including let-off dowels. There is very little compliance in the felt, true, but they seem to be quite noisy even with moderate jack spring tension. You might want to try the newest supplies from Pianotek in this particular instance.</div> <div> </div> <div>Scott Nelson<BR><BR><B><I>vince mrykalo <madvinmryk@yahoo.com></I></B> wrote:</div> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid"> <DIV>Barb, I would recommend crescendo let-off puchings from Piano-Forte Supply.</DIV> <DIV><BR> </DIV> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">From: "Barbara Richmond" <piano57@insightbb.com><BR>To: "Pianotech" <pianotech@ptg.org><BR>Date: Tue, 30 Oct 2007
16:07:32 -0500<BR>Subject: Jack button punching compression<BR><BR> <META content="MSHTML 6.00.6000.16544" name=GENERATOR> <STYLE></STYLE> <DIV><FONT face=Arial size=2>Howdy,</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>I'm replacing the jacks in some Thayer wippens. The replacements have really big, fluffy jack button punchings--which put the jack position too far forward and if I bend the spoon backward to get the jack back far enough, there isn't enough tension on the spring that's held by the loop on the jack. (Follow me?). Instead of trying to compress the questionable punchings on the jacks, I think it's easier to compress a set of replacement punchings that I have which look less wild than those on the replacement jacks, but still need compressing. Then I'll simply replace the original poofy ones. The punchings are on my bench, under a cutting board that
is weighted down. </FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Here's the question--(drum roll):</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>How long should I leave the punchings under the weight?</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>This piano belongs to a friend and it will be a good project for her to replace the punchings. Hmm, I'll have to think of a few other little jobs for her to do...</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Thanks,</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Barbara Richmond, RPT</FONT></DIV> <DIV><FONT face=Arial size=2>near Peoria, Illinois</FONT></DIV>From: John Ross <jrpiano@win.eastlink.ca><BR>To: Pianotech List <pianotech@ptg.org><BR>Date: Tue, 30 Oct 2007 18:35:02
-0300<BR>Subject: Re: Jack button punching compression<BR><BR> <META content="MSHTML 6.00.6000.16544" name=GENERATOR> <STYLE></STYLE> <DIV><STRONG><FONT face=Arial>I'd be tempted to find a different punching.</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Arial>There appears to be at least 3 thicknesses available.</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Arial>Even after compressing, I don't think it will stay, unless you possibly dampen them, or something.</FONT></STRONG></DIV> <DIV>John M. Ross<BR>Windsor, Nova Scotia, Canada<BR><A href="mailto:jrpiano@win.eastlink.ca">jrpiano@win.eastlink.ca</A></DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">From: Roger Jolly <roger.j@sasktel.net><BR>To: Pianotech List <pianotech@ptg.org><BR>Date: Tue, 30 Oct 2007 16:53:51 -0600<BR>Subject: Re: Jack button punching compression<BR><BR><FONT size=3>Hi John and
Barb,<BR> Shrinking the felt is OK to a point. Upside, a little more stability for the jack position. Downside, an increase in jack noise so be careful. I suggest you experiment before you do all 88. Usually there is some room to reposition the jack so take a careful look at this option.<BR><BR>Regards Roger <BR><BR><BR><BR></FONT></BLOCKQUOTE></BLOCKQUOTE><BR><BR> <DIV id=RTEContent> <DIV id=RTEContent> <DIV> <DIV>Vince Mrykalo RPT MPT</DIV> <DIV><FONT face="comic sans ms" color=#ff0000>University of Utah</FONT></DIV> <DIV><FONT color=#ff0000></FONT> </DIV> <DIV><EM><STRONG><FONT color=#8b8b8b>"Minél több a változás, annál nagyobb az állandoság"</FONT></STRONG></EM></DIV> <DIV> </DIV> <DIV><EM><STRONG><FONT
color=#7f007f>If you agree with me, it's too late. I've already changed my mind.</FONT></STRONG></EM></DIV> <DIV> </DIV> <DIV><A href="http://www.mrykalopiano.com/"><STRONG>www.mrykalopiano.com</STRONG></A></DIV></DIV></DIV></DIV> <div>__________________________________________________<BR>Do You Yahoo!?<BR>Tired of spam? Yahoo! Mail has the best spam protection around <BR>http://mail.yahoo.com </div></BLOCKQUOTE><BR>