<!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 6.00.2900.2769" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>Hi Joel,</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>No, these centers were all Teflon = with regular, not very good quality knuckles.  The pianos were from 1969 = and the early 70s. I just remembered I used the old inventory cards from IWU for = my Christmas mailing list, so I could look up their serial = numbers.  Of course, I moved when things got interesting--the full time, with = benefits staff position had been approved AND a piano replacement and rebuilding = program was put in place.  (I had also put the inventory list on a computer.)</FONT></DIV> <DIV><FONT face=Arial size=2></FONT><FONT face=Arial = size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>My question is what caused the = heavy touchweight in the Teflon actions.  Alan mentioned the problem of = measuring because of resistance (interia?).  Was there anything else? </FONT></DIV> <DIV><FONT face=Arial size=2></FONT><FONT face=Arial = size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>We have a 1920s B here at Braden = Auditorium that got a new action sometime during the Teflon era!   = It's heavy and I believe I will be getting permission soon to replace the action.  If I have time, I'll take a close look at the geometry of = those parts.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV> </DIV> <DIV><FONT face=Arial size=2>Barbara Richmond, RPT</FONT></DIV> <DIV><FONT face=Arial size=2>Braden Auditorium  (not part of = the School of  Music at)</FONT></DIV> <DIV><FONT face=Arial size=2>Illinois State University   :-)</FONT> </DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2></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=jajones2@wisc.edu href="mailto:jajones2@wisc.edu">Joel A. = Jones</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=caut@ptg.org href="mailto:caut@ptg.org">College and University Technicians</A> = </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, November 14, 2005 = 12:53 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [CAUT] Teflon and = felt bushings</DIV> <DIV><BR></DIV>Barb <BR><BR>Would you have had some of the early = transition to teflon pianos <BR>at IWU containing the felt knuckles? UW-Madison had = this situation with<BR>Steinway of the late 60's early 70's. I'm guessing = there may be <BR>some of those set-ups still in the field. <BR><BR>We boxed the = hammer assembly and sent back to Steinway <BR>where the new knuckles were = replaced. They did a great<BR>service to our 40 grands, but I knew of other = pianos <BR>that didn't get the factory repair. <BR><BR>Problem came from the = knuckles deforming and not remaining<BR>round. Replaced with the traditional = knuckle the actions worked<BR>very well. The teflon was not replaced. = <BR><BR>Is that what you were asking about? <BR><BR>Joel<BR>Joel Jones, = RPT<BR>Madison, WIl<BR>On Nov 14, 2005, at 12:25 PM, Barbara Richmond wrote:<BR><BR> <BLOCKQUOTE><?fontfamily><?param = Arial><?smaller><?x-tad-smaller>Fred,<?/x-tad-smaller><?/smaller><?/fontf= amily></BLOCKQUOTE> <BLOCKQUOTE><BR> <BR><?fontfamily><?param = Arial><?smaller><?x-tad-smaller>Ah.  When I started at IWU, I followed a technician who was hard of = hearing--so he couldn't hear the Teflon clicking the faculty complained = of.  His solution was to pin everything fairly tight.  = <wince>   Anyway, I repinned the worst of them, but they were still on the = heavy side.  There was no rebuilding budget at the time (and David = Stanwood was just coming out with his touchweight stuff when I moved away). =  I simply said that I had done what I could until the action could be = replaced.<?/x-tad-smaller><?/smaller><?/fontfamily></BLOCKQUOTE> <BLOCKQUOTE><BR> <BR><?fontfamily><?param = Arial><?smaller><?x-tad-smaller>So, if there isn't a touchweight issue with a Teflon repetition and = a felt hammer flange, the bulk of the problem must be in the hammer shank/flange.  Did the knuckle mounting distance change from = Teflon to felt or was it just the nature of the Teflon?  Or, did the = knuckle size change (or = whatever)?<?/x-tad-smaller><?/smaller><?/fontfamily></BLOCKQUOTE> <BLOCKQUOTE><BR> <BR><?fontfamily><?param = Arial><?smaller><?x-tad-smaller>Barbara Richmond<?/x-tad-smaller><?/smaller><?/fontfamily></BLOCKQUOTE> <BLOCKQUOTE><BR> <BR><?fontfamily><?param = Arial><?smaller><?x-tad-smaller>PS  Following someone who cannot hear and won't admit it, is = rough.  He also over-tightened screws--again to compensate for not being able = to hear such clicking.  Dealing with broken damper wire set screws was = my least favorite job.<?/x-tad-smaller><?/smaller><?/fontfamily></BLOCKQUOTE> <BLOCKQUOTE><BR> <BR></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>