<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Do you realize that you guys are always discussing who is right and who is wrong?</div><div><br></div><div>OOR</div><div><br></div><br><div><div>On Oct 6, 2008, at 11:23 PM, David Love wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>That should read "...in the opposite direction directly proportional..." so<br>we don't have any further misunderstanding. <br><br>David Love<br><a href="mailto:davidlovepianos@comcast.net">davidlovepianos@comcast.net</a> <br><a href="http://www.davidlovepianos.com">www.davidlovepianos.com</a><br><br>-----Original Message-----<br>From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf<br>Of David Love<br>Sent: Monday, October 06, 2008 2:12 PM<br>To: 'Pianotech List'<br>Subject: RE: What's all this I hear about Inertia ?<br><br>I see you're still having trouble with the math.  If you change the FW then<br>the BW changes in the opposite directly so any change in the FW will not<br>change R.  <br><br>David Love<br>davidlovepianos@comcast.net <br>www.davidlovepianos.com<br><br>-----Original Message-----<br>From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf<br>Of Richard Brekne<br>Sent: Monday, October 06, 2008 2:58 PM<br>To: pianotech@ptg.org<br>Subject: What's all this I hear about Inertia ?<br><br>Greetings:<br><br>    Then we're defining ratio differently (not to speak for Fenton). <br>    Changing the front weight has nothing to do with the action ratio. <br>    I believe what Fenton referred to was replacing lead with help from<br>    the assist spring. Then you do have the same hammers, ratio, BW,<br>    different leading, because the assist spring takes the place of some<br>    of the lead.  The action would therefore have lower inertia.  <br><br>    David Love<br><br>I see you haven't quite understood the balance equation correctly David. <br>Changing the Front Weight most certainly and undeniably does change the <br>(SW) ratio. A most casual of glances at Stanwoods formula reveals this. <br>Again...this is part of why you will find any direct translation to <br>another protocoll... the distance one for example... quite difficult at <br>best.<br><br>Review Stanwoods formula.   R =  (BW + FW - WW) / SW<br><br>Clearly a change in FW changes the value of the entire left side of the <br>formula, and hence the equivalent  R on the right side.<br><br>Cheers<br>RicB<br><br><br><br><br><br></div></blockquote></div><br><div> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><span class="Apple-style-span" style="border-collapse: collapse; font-family: arial; font-size: 13px; ">friendly greetings<br>from<br>André Oorebeek<br><br></span></div><div><span class="Apple-style-span" style="border-collapse: collapse; font-family: arial; font-size: 13px; ">Antoni van Leeuwenhoekweg 15</span></div><div><font class="Apple-style-span" face="arial" size="3"><span class="Apple-style-span" style="border-collapse: collapse; font-size: 13px; ">1401 VW, Bussum</span></font></div><div><font class="Apple-style-span" face="arial" size="3"><span class="Apple-style-span" style="border-collapse: collapse; font-size: 13px; ">the Netherlands</span></font></div><div><font class="Apple-style-span" face="arial" size="3"><span class="Apple-style-span" style="border-collapse: collapse; font-size: 13px; "><br></span></font></div><div><font class="Apple-style-span" face="arial" size="3"><span class="Apple-style-span" style="border-collapse: collapse; font-size: 13px; ">tel :    +31 35 6975840</span></font></div><div><font class="Apple-style-span" face="arial" size="3"><span class="Apple-style-span" style="border-collapse: collapse; font-size: 13px; ">gsm : +31 652 388008</span></font></div><div><span class="Apple-style-span" style="border-collapse: collapse; font-family: arial; font-size: 13px; "><br>"where Music is, no harm can be"</span></div><div><br></div></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"> </div><br></body></html>