ZZZZZaaaaaactly D.S.E. -----Original Message----- From: V T <pianovt at yahoo.com> To: pianotech at ptg.org Sent: Mon, 16 Mar 2009 3:54 pm Subject: [pianotech] capstain/wippen angle, was: key position at rest think this is a case where two parameters are available for optimizing. One is riction, and the other is the action ratio. However, the question is which of he two is more important to optimize? We can minimize the friction during the stroke, as Ron Overs did. This actually ilts the capstan in the opposite direction from what S&S did. Alternatively, we an explore if there is some benefit to a ratio that changes as a function of ey position. When I last looked at Steinway’s tilted heel/capstan geometry, I oncluded that the design intent was a changing ratio rather than minimal riction. This may very well be the biggest “secret” of the so-called ccelerated action. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20090316/ecea858f/attachment.html>
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