<!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 6.00.6000.16608" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><EM>Terry Farrell writes;</EM></DIV> <DIV><EM>All I was saying that over the life of the piano, one does <BR>slowly add more wire around the pin. I think that I have done one pitch <BR>lowering in ten years here in Florida, while I have done thousands of pitch <BR>raises. Pitch raise makes more wire wind around the pin (unless, of course, <BR>the pin is spinning backwards when I'm not looking). </EM></DIV> <DIV><EM></EM> </DIV> <DIV><FONT face=Arial>That is also my thinking. </FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>If the wire is not stretching somewhat, why is it we always need to pull the pitch up and rarely down? If changing temperature and humidity is the only cause for a piano to go out of tune, then we should be dropping pitch as much as raising it.  I'm not saying your information is incorrect, I just want to know why we just keep pulling it up. Just how much can everything compress?</FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>Al Guecia</FONT></DIV> <DIV><EM></EM> </DIV> <DIV><EM></EM> </DIV> <BLOCKQUOTE 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=mfarrel2@tampabay.rr.com href="mailto:mfarrel2@tampabay.rr.com">Farrell</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">Pianotech List</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, April 09, 2008 12:27 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: stretching wire</DIV> <DIV><BR></DIV>Sure, why not. I have little doubt you are correct with the "piano wire does <BR>not stretch" thing. I read your explanation regarding engineers, etc. I'm a <BR>believer (now). All I was saying that over the life of the piano, one does <BR>slowly add more wire around the pin. I think that I have done one pitch <BR>lowering in ten years here in Florida, while I have done thousands of pitch <BR>raises. Pitch raise makes more wire wind around the pin (unless, of course, <BR>the pin is spinning backwards when I'm not looking). Wood crushing is likely <BR>the culprit.<BR><BR>I'm just glad there are people out there smarter than I.<BR><BR>Terry Farrell<BR><BR>----- Original Message -----<BR>>> It does - albeit slowly.<BR>>><BR>>> Terry Farrell<BR>><BR>> As the pin migrates forward in the block, the block crushes at the flange, <BR>> and the pins migrate in the bridge from side bearing? Wood crush couldn't <BR>> be a factor worth considering then?<BR>> Ron N<BR>> <BR><BR><BR></BLOCKQUOTE></BODY></HTML>