Thanks, Ed! Umm, I thought the accelerated action had to do with how the weights were spaced on the key. Of course, I've been wrong before. Barbara ----- Original Message ----- From: <ed440 at mindspring.com> To: "Pianotech List" <pianotech at ptg.org> Sent: Saturday, October 07, 2006 4:53 PM Subject: Re: half-punching > > Barbara- > > A quick test on note #1 on a 1960's B action reduced down weight by 3-4 > grams. > Whatever "acceleration" is produced by the hump would be lost. Would > anyone notice? > Check to make sure other parameters still work, keys still fit in the > case. > I think it's something to keep in the bag of tricks. > A clever supplier could make a set of alternative bearing blocks that gave > a sharp edge at the center line of the balance rail pins. (Maybe someone > on this list?) > > Ed Sutton > > >> ----- Original Message ----- >> From: Barbara Richmond >> To: Pianotech >> Sent: Saturday, October 07, 2006 6:55 PM >> Subject: half-punching >> >> >> Hi all, >> >> Back to using half-punchings. >> >> Has anyone ever tried gluing a thinnest card half punching on the >> bottom of a Steinway key that already uses the half round balance rail >> bearings? Results? >> >> Thanks, >> >> Barbara Richmond, RPT >> near Peoria, IL >
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