[pianotech] tuning pin sizes: Boston & Essex?

J Patrick Draine jpdraine at gmail.com
Wed Feb 23 15:38:39 MST 2011


Hi, I have a couple clients with recent (past the 5 year warranty, less than
10 years old) Boston and Essex grands. A few tuning pins have
less-than-borderline torque, particularly in this cold-dry New England
winter. I have a call back on the Essex ("This one note sounds horrible!!")
which I tuned back in November.
My options are drive pins (I'm visioning coils smashed to the plate, not a
good choice), use CA (my usual choice when dealing with decades old pianos),
or install a few oversize pins. Anyone know what length and diameter is the
standard on these models (Boston GP-163 II and Essex EGP161)? I recall
reading that Kawai and maybe Yamaha sometimes use a pin larger than 1/0 but
less than 2/0.
Thanks,
Patrick
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