<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=US-ASCII"> <meta name=Generator content="Microsoft Word 10 (filtered)"> <title>[CAUT] Lighter Touchweight</title> <style>  </style> </head> <body bgcolor=white lang=EN-US link=blue vlink=purple> <div class=Section1> It’s possible. I’d dig out the action model and try it but that would mean I’d have to clean the shop to find it. Maybe it’s one of those perceptual tricks ;-).  <div> David Love davidlovepianos@comcast.net www.davidlovepianos.com </div> -----Original Message----- From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] On Behalf Of Chris Solliday Sent: Sunday, October 21, 2007 6:13 AM To: College and University Technicians Subject: Re: [CAUT] Lighter Touchweight   <div> Are you sure that you reduced overall BW? MOre than likely you reduced DW and increased UW as you reduced scuffing friction at the capstan/wippen profile when you improved your line. JMHO </div> <div> Chris Solliday  </div> <blockquote style='border:none;border-left:solid black 1.5pt;padding:0in 0in 0in 4.0pt; margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'> <div> ----- Original Message ----- </div> <div style='font-color:black'> From: <a href="mailto:davidlovepianos@comcast.net" title="davidlovepianos@comcast.net">David Love</a> </div> <div> To: <a href="mailto:caut@ptg.org" title="caut@ptg.org">'College and University Technicians'</a> </div> <div> Sent: Saturday, October 20, 2007 11:31 PM </div> <div> Subject: Re: [CAUT] Lighter Touchweight </div> <div>   </div> I guess I’ll have to revisit the formulas (or my action model—wherever the damn thing is).  However, just from an empirical point of view, I have had success in reducing touchweight slightly by shimming the wippen flange (or rail) out.  Whether or not it is as effective as moving the stack, I’ll have to take your word for it for now.  Admittedly, it’s not a solution I usually consider for wholesale leverage changes.    <div> David Love davidlovepianos@comcast.net www.davidlovepianos.com </div> -----Original Message----- From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] On Behalf Of Jon Page Sent: Saturday, October 20, 2007 6:46 PM To: caut@ptg.org Subject: [CAUT] Lighter Touchweight   <blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'> I disagree that the advantage is taken away at the Knuckle </blockquote> <div>   </div> <div> To calculate the ratio of the wippen measure the flange center pin </div> <div> to the knuckle rep lever contact point (I think at half blow) divide </div> <div> that by the flange center pin to capstan/cushion contact point. </div> <div>   </div> <div> No where is the jack center involved in ratio computation. </div> <pre style='margin-left:1.0in'><X-SIGSEP>-- </pre> <div> </X-SIGSEP>Regards, Jon Page </div> </blockquote> </div> </body> </html>