At 08:36 PM 01/17/2001 -0700, you wrote: >List, > >I tune a Yamaha G1 (1963) for a local piano teacher who has been >complaining of a buzzing key (D4). It seems that the buzzing is being >produced by the damper, a trichord wedge, as the felt settles between the >vibrating strings. The damper appears to be aligned to the strings and >the dampers overall are in decent regulation. There are several other >trichord dampers that buzz in this manner, but to a lesser degree. > >Is it a possibility that the problem stems from the consistency of the >aging damper felt? Could the design of the piano (trichord wedges to F4) >also be a contributing factor? > >Any ideas to cure this annoying bzzzzz would be much appreciated! > >Many thanks, > >Stacy Adams >PTG Associate I had made damper wedges quieter and somewhat more effective by cutting the felt in half. A pair of center pin nippers cuts the felt almost up to the head producing two blocks out of the one which can seat better. A light sanding on the sides with paper or a checkering file reduces some noise as well. Trim the tips just below the string, squeeze the new tip with round-nosed pliers to reduce drag-thru noise. On a piano where the tips are too long and interfering with tuning/playing, I'll cut them flush with the bottom of the strings. Squeeze the wire with pliers to secure felt and slice off 9action removed of course). Tune. However the damper needs to be removed to trim the trichord felt on the rear of the damper. Sometimes there is no easy way, Regards, Jon Page, piano technician Harwich Port, Cape Cod, Mass. mailto:jonpage@mediaone.net ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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