<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD><TITLE>Re: Baldwin termination bars</TITLE> <META content="text/html; charset=us-ascii" = http-equiv=Content-Type> <STYLE type=text/css></STYLE> <META content="MSHTML 5.00.3502.5390" name=GENERATOR></HEAD> <BODY> <DIV><FONT color=#800000 face=Garamond><SPAN class=371300618-16062003>Ron,</SPAN></FONT></DIV> <DIV><FONT color=#800000 face=Garamond><SPAN class=371300618-16062003></SPAN></FONT> </DIV> <DIV><FONT color=#800000 face=Garamond><SPAN = class=371300618-16062003>You have any pictures or drawings of this, especially of what you are calling the = "v in the joiner bars"</SPAN></FONT></DIV> <DIV><FONT color=#800000 face=Garamond><SPAN class=371300618-16062003></SPAN></FONT> </DIV> <DIV><FONT color=#800000 face=Garamond><SPAN class=371300618-16062003>Alan</SPAN></FONT></DIV> <BLOCKQUOTE style="BORDER-LEFT: #800000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: = 0px; PADDING-LEFT: 5px"> <DIV align=left class=OutlookMessageHeader dir=ltr><FONT = face=Tahoma size=2>-----Original Message-----<BR><B>From:</B> = caut-bounces@ptg.org [mailto:caut-bounces@ptg.org]<B>On Behalf Of </B>Overs = Pianos<BR><B>Sent:</B> Friday, June 13, 2003 2:08 PM<BR><B>To:</B> College and University Technicians<BR><B>Subject:</B> Re: Baldwin termination bars<BR><BR></DIV></FONT> <DIV>Dave and Fred,</DIV> <DIV><BR></DIV> <DIV>I owned an earlier SD-10 (1975) which we rebuilt in 1988<FONT color=#0000ff> (we have just sold the piano to a local enthusiast, = and will be re-doing the piano again later this year when it will get one of our = actions and a new key board)</FONT>. It has the one piece per section forged = inserts as Fred described. The string noise problem with these pianos is two = fold, the large radius of the bearing bars and the uniformly quite long length = of the front segments.</DIV> <DIV><BR></DIV> <DIV>The large radius is the most significant problem. We took to the = inserts on our piano and reshaped them with an angle grinder, reducing the = bars to a smaller radius. This involves cutting a considerable v into the = 'joiner bars' adjacent to and between the capo and front duplex bars, but it works = just fine. This will improve the tone very significantly. For those notes = which remain noisy, the problem will be that the front duplex length is very = close to that of a partial of the speaking length. You can detune any = offenders by placing a drop of glue onto the front duplex length segment. This will = increase the mass of the offending duplex to push its frequency down = to detune it, reducing its propensity to vibrate sympathetically with the = speaking length.</DIV> <DIV><BR></DIV> <DIV>I use the glue-on-the-duplex trick quite regularly during the = course of tuning on the road.</DIV> <DIV><BR></DIV> <DIV>The later SF-10 Baldwins used individual inserts with varying = lengths. This enabled an insert to be selected, for each note, with a string = segment length which was detuned to the speaking length harmonics. It is a = very nice idea.</DIV> <DIV><BR></DIV> <DIV>Best regards,</DIV> <DIV>Ron Overs</DIV> <DIV><BR></DIV><X-SIGSEP><PRE>-- </PRE></X-SIGSEP> <DIV><FONT color=#000000 size=-2><BR></FONT><FONT color=#0000ff face="Times New Roman" size=+1><B>OVERS PIANOS - = SYDNEY</B></FONT></DIV> <DIV><FONT color=#000000><I>    </I></FONT><FONT = color=#0000ff><I> Grand Piano Manufacturers</I></FONT><FONT color=#000000><BR>     _______________________</FONT></DIV> <DIV><FONT color=#000000 size=-2><BR></FONT></DIV> <DIV><FONT color=#000000>Web http://overspianos.com.au</FONT></DIV> <DIV><FONT color=#000000>mailto:ron@overspianos.com.au</FONT></DIV> <DIV><FONT color=#000000>     _______________________</FONT></DIV></BLOCKQUOTE></BODY></HTML>