<!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 6.00.2800.1458" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><STRONG><FONT face=Arial>Hi Terry,</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Arial>My understanding was, that the felt hadn't been rinsed properly, and something acidic, was left in from the felt making process.</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Arial>The corrosion, on the point of contact was plain to see.</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Arial>I seem to recollect, that it was mainly Story & Clarke and Lowery, that had the problem. They would supply a new spring rail, and pay labour as well, for the fix.</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Arial>I seem to remember the actions being Pratt Read?</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Arial></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"> <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</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, August 05, 2004 9:44 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: replacement hammer butt springs</DIV> <DIV><BR></DIV> <DIV><FONT face=Arial size=2>Funny you should mention bad felt John. Just last week I spent a day doing some refurbishing on an old original M&H upright from the 1890s - quite respectable shape for its age. I was putting all new felt on the keyframe and leveling keys, but the lady wanted to minimize costs, so the key bushings were OK and I figured I would not do anything with the keypins. Upon removal of the center rail pin punchings, I noticed that the center rail keypins were all corroded just at the bottom where the felt punchings were. The front key pins were fine - no corrosion. But the center rail pins were trashed - I had to replace them. Bottom line though, I can only assume the two rails had been exposed to similar environmental conditions for the past 110 years, but only the center rail pins corroded - likely the felt punchings I presume? I wonder what it could be about the felt that would cause corrosion like that.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Terry Farrell</FONT></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=jrpiano@win.eastlink.ca href="mailto:jrpiano@win.eastlink.ca">John Ross</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">Pianotech</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, August 05, 2004 8:23 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: replacement hammer butt springs</DIV> <DIV><BR></DIV> <DIV><STRONG><FONT face=Arial>Hi Elwood,</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Arial>I suppose those repair springs might be ok, in an emergency.</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Arial>But, I would recommend, installing the proper new springs on the rail. If some are bad, the rest are on the way.</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Arial>If you do replace the springs, make sure to remove, any felt that might be there. Impurities in the felt, was what caused the problem, in a lot of pianos from the late 70's and 80's</FONT></STRONG></DIV> <DIV><STRONG><FONT face=Arial>Regards,</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"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=edoss@utm.edu href="mailto:edoss@utm.edu">Elwood Doss, Jr.</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> Thursday, August 05, 2004 8:48 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> replacement hammer butt springs</DIV> <DIV><BR></DIV> <DIV><FONT face=Arial size=2>Anyone have any good ideas regarding installing repair hammer butt springs in an Acrosonic spinet?  I have the kind of springs that has a flat plate (really small) with a slot in it for placing a screw in it.  Anyone tried using thick CA glue or that new "gorilla glue" to attach it to the hammer butt spring rail?  Just wondered.</FONT></DIV> <DIV><FONT face=Arial size=2>Joy!</FONT></DIV> <DIV><FONT face=Arial size=2>Elwood </FONT></DIV> <DIV> </DIV> <DIV><FONT face=Arial size=2>Elwood Doss, Jr., RPT<BR>Piano Technician/Technical Director<BR>Department of Music<BR>145 Fine Arts Building<BR>University of Tennessee at Martin<BR>Martin, TN  38238<BR>731-881-1852</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>