Hi David, My first question would be, does it make the noise on all blows, soft & loud, and releases, slow and fast? Is there a hard spot somewhere in the damper felt--though I usually think of that as being a bzzt. Could you slip a small piece of felt between the head and the wire to eliminate that as the noise making point? Barbara Richmond, RPT near Peoria, IL ----- Original Message ----- From: "David Nereson" <da88ve at gmail.com> To: pianotech at ptg.org Sent: Monday, March 2, 2009 1:49:31 AM GMT -06:00 US/Canada Central Subject: [pianotech] rattling grand damper The highest bass damper on this small grand is one where the damper is way offset from the others to clear a plate strut. So the damper wire runs straight back parallel to the head, then takes its right-angle bend down through the guide rail. Trouble is, it rattles, or "twangs" when it settles onto the vibrating bichord, almost like a nano version of twanging a ruler on the edge of the desk in grade school, to get that "doing-oing-oing-oing-oing" effect. No, the head is not loose on the wire. No, the hole in the guide rail isn't too big. The piano's only a few years old. No, the screw in the damper block isn't loose. No, the damper wire isn't contacting the head -- it runs along the felt, but not right against. it. Yes, the damper lifts and seats straight up and down without twisting. I just don't know what to do to get rid of that "duhd-d-d-d-d-d" noise (to use a technical term). Maybe they didn't use a stiff enough gauge of damper wire? --David Nereson, RPT -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20090302/45625215/attachment-0001.html>
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