<!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 6.00.2900.2873" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; BACKGROUND-COLOR: #ffffff" bgColor=#d8d0c8> <DIV><FONT face="Verdana Ref">Hi, Julia,</FONT></DIV> <DIV><FONT face="Verdana Ref"></FONT> </DIV> <DIV><FONT face="Verdana Ref">Here's one place to start:</FONT></DIV> <DIV><FONT face="Verdana Ref"><A href="http://www.stanwoodpiano.com/touchweight.htm">http://www.stanwoodpiano.com/touchweight.htm</A></FONT></DIV> <DIV><FONT face="Verdana Ref"></FONT> </DIV> <DIV><FONT face="Verdana Ref">--Cy--</FONT></DIV> <DIV><FONT face="Verdana Ref"><STRONG>shuster</STRONG>piano.com<A href="http://stanwoodpiano.com"></A></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=KeyKat88@aol.com href="mailto:KeyKat88@aol.com">KeyKat88@aol.com</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, June 04, 2006 3:29 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Re key bounce</DIV> <DIV><BR></DIV> <DIV> <DIV>Greeetings,</DIV> <DIV> </DIV> <DIV>       Some ot this is so greek to me! Where can I learn more about touch weight?<BR></DIV> <DIV>Julia Gottshall</DIV> <DIV>Reading, PA</DIV> <DIV> </DIV> <DIV>In a message dated 6/1/2006 5:51:32 PM Eastern Standard Time, <A href="mailto:sec@overspianos.com.au">sec@overspianos.com.au</A> writes:</DIV> <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT face=Arial>One cause of key bounce, besides low up weights, is overworked <BR>>wippen support springs...  Check the wippen flanges and see if there <BR>>are support springs...  if so, see how much the down weight drops <BR>>after disengaging the spring...  if it's more than 17grams your <BR>>likely to have "bouncy key".  The more the spring works above 17 <BR>>grams the worse the effect.  This 17gram cut off is echoed by Lloyd <BR>>Meyer, Renner USA and I agree with it, although I find that pianos <BR>>feel more normal to more pianists when key weighting is designed so <BR>>that spring tension only reduces touch weight 9-12grams.  I've seen <BR>>Samicks and other makes with springs that work as much as 40 grams <BR>>off the touch weight...  that's a big big no no...!<BR>><BR>>David Stanwood<BR><BR><BR>I would agree with David. When using assist springs we usually set <BR>them to assist 10 grams on note A1, graduating down to no assistance <BR>by around note C52. We've set up no. 6, which we're bringing to <BR>Rochester, with assist springs set up as mentioned above.<BR><BR>Best regards,<BR>Ron O.</FONT></BLOCKQUOTE></DIV> <DIV></DIV></BLOCKQUOTE></BODY></HTML>