There's lots of info out there in archive land regarding grand action center friction values. Not much on uprights. What is the target friction for an upright damper flange. I've seen 5*+* but no indication at what distance the measurement is taken from the center. Jim I -- grandpianosolutions.com (under construction) Shirley, MA (978) 425-9026 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20091111/a6c1f928/attachment.htm>
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