[pianotech] re; Action Ratio Measuring

[Joseph Garrett]

Okeedokee!<G> Works for me.
Curmudge aka Joe


----- Original Message ----- 
From: Dale Erwin 
To: joegarrett at earthlink.net;pianotech at ptg.org
Sent: 9/22/2012 7:05:28 PM 
Subject: Re: [pianotech] re; Action Ratio Measuring


Hi Joe

Wether the  casptan is straight or angled, watching it move thru its motion changes its contact point with the wippen heel. Not by sliding but by rotating. Its not much and I'll choose not to split hairs about it. Ok?


Dale Erwin R.P.T.
Erwin's Piano Restoration Inc.
Mason & Hamlin/Steinway/U.S. pianos
www.Erwinspiano.com
Phone: 209-577-8397

 
  





-----Original Message-----
From: Joseph Garrett <joegarrett at earthlink.net>
To: pianotech <pianotech at ptg.org>
Sent: Sat, Sep 22, 2012 6:51 pm
Subject: [pianotech] re; Action Ratio Measuring


Dale said: "All actions are subject the accelerating action phenomena to
changing ratios thru the complete range of motion as the capstans is moving
further from the wip center pin and the increasing leverage efficiency in
the wip."

Dale,
I can't agree. The capstan does not move but a miniscule "...further from
the wip center pin...". Del brought this to my attention during a Key class
I was giving. I agree with Del, ...that there is little movement of the
capstan along the wippen foot felt! They are so close to linear to each
other that the differences of their arcs is pretty much negligible imo.<G>
Joe 


Joe Garrett, R.P.T.
Captain of the Tool Police
Squares R I
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20120922/93a164f2/attachment.htm>