<html> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <meta name=Generator content="Microsoft Word 10 (filtered)"> <style>  </style> </head> <body lang=EN-US link=blue vlink=blue style='word-wrap: break-word;-webkit-nbsp-mode: space; -webkit-line-break: after-white-space'> <div class=Section1> It was a necessary clarification for the sake of the discussion.   <div> David Love davidlovepianos@comcast.net www.davidlovepianos.com </div> -----Original Message----- From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of andré oorebeek Sent: Monday, October 06, 2008 2:35 PM To: Pianotech List Subject: Re: What's all this I hear about Inertia ?   <div> Do you realize that you guys are always discussing who is right and who is wrong? </div> <div>   </div> <div> OOR </div> <div>   </div>   <div> <div> On Oct 6, 2008, at 11:23 PM, David Love wrote: </div> <div> That should read "...in the opposite direction directly proportional..." so we don't have any further misunderstanding. David Love <a href="mailto:davidlovepianos@comcast.net">davidlovepianos@comcast.net</a> <a href="http://www.davidlovepianos.com">www.davidlovepianos.com</a> -----Original Message----- From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of David Love Sent: Monday, October 06, 2008 2:12 PM To: 'Pianotech List' Subject: RE: What's all this I hear about Inertia ? I see you're still having trouble with the math.  If you change the FW then the BW changes in the opposite directly so any change in the FW will not change R.   David Love davidlovepianos@comcast.net www.davidlovepianos.com -----Original Message----- From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of Richard Brekne Sent: Monday, October 06, 2008 2:58 PM To: pianotech@ptg.org Subject: What's all this I hear about Inertia ? Greetings:    Then we're defining ratio differently (not to speak for Fenton).    Changing the front weight has nothing to do with the action ratio.    I believe what Fenton referred to was replacing lead with help from    the assist spring. Then you do have the same hammers, ratio, BW,    different leading, because the assist spring takes the place of some    of the lead.  The action would therefore have lower inertia.      David Love I see you haven't quite understood the balance equation correctly David. Changing the Front Weight most certainly and undeniably does change the (SW) ratio. A most casual of glances at Stanwoods formula reveals this. Again...this is part of why you will find any direct translation to another protocoll... the distance one for example... quite difficult at best. Review Stanwoods formula.   R =  (BW + FW - WW) / SW Clearly a change in FW changes the value of the entire left side of the formula, and hence the equivalent  R on the right side. Cheers RicB </div> </div>   <div><span style='orphans: 2;text-align:auto;widows: 2;-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;word-spacing:0px'><span style='orphans: 2;widows: 2;-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;word-spacing:0px'> <div style='word-wrap: break-word;-webkit-nbsp-mode: space;-webkit-line-break: after-white-space'> <div style='word-wrap: break-word;-webkit-nbsp-mode: space;-webkit-line-break: after-white-space'> <div> friendly greetings from André Oorebeek </div> <div> Antoni van Leeuwenhoekweg 15 </div> <div> 1401 VW, Bussum </div> <div> the Netherlands </div> <div>   </div> <div> tel :    +31 35 6975840 </div> <div> gsm : +31 652 388008 </div> <div> "where Music is, no harm can be" </div> <div>   </div> </div>   </div>   </div>   </div> </body> </html>