Bill I agree with your method for "ordinary" flanges. But Matthew is working on spring loaded flanges, where the resistance is only in the strength of the spring, not the weight of the hammer. Would you still go for more resistance on the heavier hammers? Wim -----Original Message----- From: William Monroe <bill at a440piano.net> To: pianotech at ptg.org Sent: Thu, 30 Apr 2009 9:24 am Subject: Re: [pianotech] Action Centers Different strokes.? If I measure with a gram gauge I'll taper the friction, higher in the Bass (~5g), lower in the Treble (~3g).? Usually I measure with the swing test, aiming for the same number of swings Bass to Treble - about 6 swings, depending upon the season/humidity.? When I taper the gram friction readings, I'm essentially trying to produce this even swing result.? Heavier hammers with more inertia will produce more swings than a lighter hammer for the same gram friction. William R. Monroe On Thu, Apr 30, 2009 at 12:59 PM, <wimblees at aol.com> wrote: There should not be any difference between bass and treble. I don't know what an acceptable reading would be, because I've never measured one. As I said,?test about a dozen flanges, and take an average. Wim -----Original Message----- From: Matthew Todd <toddpianoworks at att.net> To: pianotech at ptg.org Sent: Thu, 30 Apr 2009 5:31 am Subject: Re: [pianotech] Action Centers When I use the gram gauge, what is an acceptable reading?? Will it vary from bass to treble? TODD PIANO WORKS Matthew Todd, Piano Technician -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20090430/342edd35/attachment.html>
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