<!doctype html public "-//W3C//DTD W3 HTML//EN"> <html><head><style type="text/css"></style><title>RE: capo buzz</title></head><body> <blockquote type="cite" cite>At 12:53 PM -0500 20/10/03, Mark Cramer wrote:</blockquote> <blockquote type="cite" cite>Ron Overs suggests placing a piano wire over your bearing material of<br> choice, then whacking it with a hammer... if the bar indents, it is too</blockquote> <blockquote type="cite" cite>soft.</blockquote> <div><br></div> <div>Hello Mark,</div> <div><br></div> <div>I wouldn't recommend doing this test on a piano with a factory standard capo, since almost all would be too soft. We only use this check on the capo and duplex bars we've hardened.</div> <div><br></div> <div>At 8:18 AM -0500 20/10/03, Lance Lafargue wrote:</div> <blockquote type="cite" cite><font face="Arial" size="-1" color="#000080"> And how do I determine if I have a "soft" V-bar?</font></blockquote> <div> </div> <div>Check the bars for string grooves. If there are noticeable grooves the bar is from my experience too soft.</div> <div><br></div> <div>One added benefit of hardened bars is that the strings slide easily when aligning the wire. However, for pianos which have been laid out such that the wire does not run straight across the bearing bars, hardened bars can allow the strings to migrate along the bar as the string is rendered.</div> <div><br></div> <div>I would also like to add a comment to Richard B's and David L's remarks regarding reshaping the bars to a 0.5 mm V. This will work as suggested provided that the bars are not actually hard. If the bars are harder than the wire (45 on the Rockwell C scale) and the string approach angle is over 15 degrees, premature string breakage will certainly occur.</div> <div><br></div> <div>Ron O.</div> <x-sigsep><pre>-- </pre></x-sigsep> <div><font face="Times New Roman" size="+1" color="#0000FF"><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 size="-2" color="#000000"><br> </font><font color="#000000">Web http://overspianos.com.au</font></div> <div><font color="#000000">mailto:info@overspianos.com.au<br> _______________________</font></div> </body> </html>