<!doctype html public "-//w3c//dtd html 4.0 transitional//en"> <html> <body bgcolor="#FFFFFF"> Its not the downbearing itself that yields any friction across the bridge surface... its more likley the bridge pins forceing the string down tight that is in the picture here. <p>RicB <p>Cy Shuster wrote: <blockquote TYPE=CITE><style></style> <font size=-1>Sorry, I have to ask: the hammer *shanks* have a coat of graphite?  Does this reduce friction with -- I dunno -- the air during play?!?</font> <font size=-1>I'm still trying to figure out why bridge caps are graphited.  With 150 lbs. of tension on thin treble wire and just a few degrees of downbearing, I can't imagine that an un-graphited wooden cap gives much friction to steel during rendering.  But, I haven't done any experimentation.</font> <font size=-1>--Cy Shuster--</font><font size=-1>Rochester, MN</font> <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 href="mailto:roger.j@sasktel.net" title="roger.j@sasktel.net">Roger Jolly</a></div> <div style="FONT: 10pt arial"><b>To:</b> <a href="mailto:pianotech@ptg.org" title="pianotech@ptg.org">Pianotech</a></div> <div style="FONT: 10pt arial"><b>Sent:</b> Friday, September 05, 2003 12:25 AM</div> <div style="FONT: 10pt arial"><b>Subject:</b> Re: New Sohmer pianos(made by Samick)</div>  The graphite has gone from Samick action centres, that I can take some credit for.  However Renner hammer shanks and wips will still have a light coat of graphite.</blockquote> </blockquote> <p>-- <br>Richard Brekne <br>RPT, N.P.T.F. <br>UiB, Bergen, Norway <br><A HREF="mailto:rbrekne@broadpark.no">mailto:rbrekne@broadpark.no</A> <br><A HREF="http://home.broadpark.no/~rbrekne/ricmain.html">http://home.broadpark.no/~rbrekne/ricmain.html</A> <br><A HREF="http://www.hf.uib.no/grieg/personer/cv_RB.html">http://www.hf.uib.no/grieg/personer/cv_RB.html</A> <br>  </body> </html>