[CAUT] Lighter Touchweight

[Chris Solliday]

[CAUT] Lighter Touchweightcleaning your shop could be
  ----- Original Message ----- 
  From: David Love 
  To: 'College and University Technicians' 
  Sent: Sunday, October 21, 2007 10:05 AM
  Subject: Re: [CAUT] Lighter Touchweight


  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 ;-).  

  David Love
  davidlovepianos at comcast.net
  www.davidlovepianos.com 

  -----Original Message-----
  From: caut-bounces at ptg.org [mailto:caut-bounces at 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



  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

  Chris Solliday 

    ----- Original Message ----- 

    From: David Love 

    To: 'College and University Technicians' 

    Sent: Saturday, October 20, 2007 11:31 PM

    Subject: Re: [CAUT] Lighter Touchweight



    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.  



    David Love
    davidlovepianos at comcast.net
    www.davidlovepianos.com 

    -----Original Message-----
    From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Jon Page
    Sent: Saturday, October 20, 2007 6:46 PM
    To: caut at ptg.org
    Subject: [CAUT] Lighter Touchweight



      I disagree that the advantage is taken away at the Knuckle



    To calculate the ratio of the wippen measure the flange center pin

    to the knuckle rep lever contact point (I think at half blow) divide

    that by the flange center pin to capstan/cushion contact point.



    No where is the jack center involved in ratio computation.

-- 
    Regards,

    Jon Page
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