Jon is right. This is the simple, inflexible rule: when doing precise regulation (in my shop and practice, any regulation whatsoever) you must create pretty much exact key travel on each note when the action is outside the piano---or you will be keenly disappointed in your results. You must become radically more intimate with your dip block for your regulating skills to quickly increase. There are several ways to recreate exact key travel in the action outside the piano: ---on a bench, with shims under the two rails (you mess around until you get it right) ---on a specially made bench w/ built-in adjustable glides ---on an Edwards Action Trolley (Google it) ---on your knees in front of the piano with a cheekblock (unfinished side up) between your knee and the balance rail (again, mess around 'til you get it right) Key travel is sacred. Nothing works without a precise, consistent distance on every key. My ideal in 99% of situations is 10.2-3mm. Hope this helps..... DA P.S. Heard Lang Lang solo at Disney Hall last night; packed house; the Hamburg D sounded great; Beethoven (good) Albeniz (better) and Prokofiev (best.) He was sweet; played beautifully; made one very highlighted "clam," or mistake, that kind of endeared me to him; played a famous, short Chopin etude as an encore (my brain can't think of the name.) He takes a lot of sh**t from some of my peers for his "showboatiness" and supposed lack of finesse and pulse, but I was completely engaged all night, although much less so with the Beethoven portion than with the more modern work. BTW, the tuning and voicing were fantastic---AND I wanted a BIT more brilliance and clarity in octave 5 and halfway into octave 6...but the balance as very good, even in semi-nosebleed seats (it's a great-sounding room.) Thank you, Ron Elliott (head tech for LAPhil.) On Nov 9, 2009, at 7:59 AM, Cy Shuster wrote: > Do you measure dip on, say, A0, C4, and C8 to reproduce it > accurately? How many measurements are enough? > > --Cy-- > > Cy Shuster, RPT > Albuquerque, NM > www.shusterpiano.com > > On Nov 9, 2009, at 4:05 AM, Jon Page wrote: > >> Measure the dip in the piano and shim the action frame >> on the bench to duplicate the dip. The contour of the >> key bed and bench surface rarely match. >> -- >> >> Regards, >> >> Jon Page > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20091109/fc386154/attachment-0001.htm>
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