Hi, Consider the vector of force on the pinblock/web with plate bushings and without. If there *are* bushings the vector is in a different direction. I don't understand this well but Mr. Bolduc gives a wonderful class on the subject. At 08:34 AM 3/20/99 -0500, you wrote: >Wouldn't the tuning pin bushings help to restrict motion? > >I would try snugging the plate screws and inserting hardwood >wedges between the flange and block to see if it makes a difference. > >Jon Page > > >At 10:15 PM 3/19/99 -0600, you wrote: >>Greetings from the rapidly thawing Canadian prairie! >> >>Further to the discussion on pinblock fitting, could someone comment on >>Yamaha's official position on this issue? A colleague of mine has a client >>whose C3 has a gap between block and flange tapering from 33 thou in the >>bass to about 11 thou in the treble. The piano apparently suffers from >>tuning instability despite proper humidity control (Dampp Chaser) and >>frequent tuning. >> >>When brought to Yamaha's attention, the official factory response was that >>the gap was "within tolerance". Is there such a tolerance for pinblock >>fit? To me, it either contacts the flange or it doesn't. >> >>Regards to all, >> >>Stan Kroeker >>Registered Piano Technician >> > > Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T. Tuner for the Saskatchewan Centre of the Arts drose@dlcwest.com http://www.dlcwest.com/~drose/ 3004 Grant Rd. REGINA, SK S4S 5G7 306-352-3620 or 1-888-29t-uner
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