<HTML><HEAD><TITLE>Re: v-bar/capo repair: Seiler pictures 2</TITLE> <STYLE type=text/css></STYLE> </HEAD> <BODY style="BORDER-TOP-STYLE: none; BORDER-RIGHT-STYLE: none; BORDER= -LEFT-STYLE: none; BORDER-BOTTOM-STYLE: none">Ron,<BR><BR>Looking at th= e jpg of the capo bar I notice how V shaped it is...not rounded...comme= nts<BR><BR>David Ilvedson, RPT<BR>Pacifica, California<BR><BR><BR><BR> <DIV style="PADDING-RIGHT: 5px; PADDING-LEFT: 5px; PADDING-BOTTOM: 5p= x; BORDER-LEFT: #000000 3px solid; PADDING-TOP: 5px"> <HR> Original message<BR>From: "Overs Pianos" <SEC@OVERSPIANOS.COM.AU><BR>To= : "Pianotech List" <PIANOTECH@PTG.ORG><BR>Received: 3/2/2006 12:55:10 P= M<BR>Subject: Re: v-bar/capo repair: Seiler pictures 2<BR><BR> <DIV align=left><FONT face=Arial>Hi Barbara,</FONT></DIV><FONT face= =Arial> <DIV><BR></DIV></FONT> <DIV><FONT face=Arial>I agree with David and Ron N, I think the front= duplex length is one of the main issues. There is also a degree of cap= o bar deformation which won't be helping matters either.</FONT></DIV> <DIV><FONT face=Arial><BR></FONT></DIV> <DIV><FONT face=Arial>Hardening the bar along with reducing the duple= x length would most likely help. However, the string approach angle is = getting up there to be running against hard bars and the last note befo= re the bar has quite an offset angle over the bar. So if this bar is ha= rdened you will have difficulty avoiding the tendency for the fist capo= -note strings to skid across towards the adjacent treble strings (this = is not uncommon when the bars are hardened). This tells you something a= bout soft capo bars, they are grooving, and the grooves are holding the= strings in the position they were aligned to. It stands to reason that= the piano wire will be rattling on the deformed groove as it vibrates.= Hard hammers will bring out the worst that is there to be had.</FONT><= /DIV> <DIV><FONT face=Arial><BR></FONT></DIV> <DIV><FONT face=Arial>You could experiment with front duplex length r= eduction by selecting the note with the most offensive string noise, pl= acing a small bar under the string as close as possible to the capo. Th= e transformation will very likely astound you. Its unfortunate that S&a= mp;S persist in using 40 mm as a front duplex standard for the first ca= po notes. By default a great majority of the rest follow suit. When cop= ying some one else's specification, it helps to understand what it is w= e are copying.</FONT></DIV> <DIV><FONT face=Arial><BR></FONT></DIV> <DIV><FONT face=Arial>Surely we can learn something by observing the = fact that string noise in upright pianos is just about non existent. I = believe it is no coincidence that upright pianos don't have 40 mm betwe= en the V bar and pressure bar. If they did they'd be noisy also.</FONT>= </DIV> <DIV><FONT face=Arial><BR></FONT></DIV> <DIV><FONT face=Arial>Just as an aside, that plate is conveniently sh= aped for retrofitting a strut between the plate and the belly rail. Oft= en the lower corner, where the plate strut meets the agraffe mounting p= late, is radiused making it hard to centre-drill the plate for seating = the strut.</FONT></DIV> <DIV><FONT face=Arial><BR></FONT></DIV> <DIV><FONT face=Arial>For those of you who haven't seen the struts th= at we fit between the plate and the belly rail I've posted an image to = my personal web space. Its a bit big to post to the list.</FONT></DIV> <DIV><FONT face=Arial><BR></FONT></DIV> <DIV><FONT face=Arial>http://members.optusnet.com.au/ronovers/hardene= d_KG6_capo.jpg</FONT></DIV> <DIV><FONT face=Arial><BR></FONT></DIV> <DIV><FONT face=Arial>This plate has the characteristic inconvenient = radius right where we would prefer to locate the strut.</FONT></DIV> <DIV><FONT face=Arial><BR></FONT></DIV> <DIV><FONT face=Arial>Best,</FONT></DIV> <DIV><FONT face=Arial>Ron O.</FONT></DIV><X-SIGSEP><PRE>-- </PRE></X-SIGSEP> <DIV><FONT face="Times New Roman" color=#0000ff 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><B= R>_______________________</FONT></DIV> <DIV><FONT color=#000000 size=-2><BR></FONT><FONT color=#000000>W= eb http://overspianos.com.au</FONT></DIV> <DIV><FONT color=#000000>mailto:ron@overspianos.com.au<BR>___________= ____________</FONT></DIV></DIV></BODY></HTML>