[CAUT] Lighter Touchweight

[Chris Solliday]

[CAUT] Lighter TouchweightAre 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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