You can also have a computer with a visual device checking the key height and giving you the correct thickness to add, note by note, as I've been said they do in Yamaha factory ! Isaac OLEG Entretien et reparation de pianos. PianoTech 17 rue de Choisy 94400 VITRY sur SEINE FRANCE tel : 033 01 47 18 06 98 fax : 033 01 47 18 06 90 cell: 06 60 42 58 77 > -----Message d'origine----- > De : pianotech-bounces@ptg.org > [mailto:pianotech-bounces@ptg.org]De la > part de Bill Ballard > Envoye : lundi 20 octobre 2003 03:40 > A : Pianotech > Objet : Leveling Sticks WAS: Steinway D key levelling > (Hamburg model) > > > At 3:53 PM -0600 10/19/03, Nichols wrote: > >>The (old) weights I have with the tacks cast into them are about > >>87g each, and let you position them somewhere between the capstan > >>and backcheck. They let you remove and replace keys > easily without > >>falling off too, which is nice. They also leave numerous holes in > >>both the keys and your fingers, which is somewhat less nice. > >>Another of life's little tradeoffs. > > > >Ron N > > > >I forget where I learned it, but the fender washers on allthread > >trick seems to work pretty good for me. Relatively > consistent, easy > >to lift the keys, etc., etc. Using 3/8 allthread, with > washers that > >have a 5/8 hole, the "travel" is enough to lift a key without > >removing the weight. Placed between the capstan and the backcheck. > >About 4 washers per note. Haven't weighed 'em, don't care. Not > >cheap, though, nowadays. The dern washers add up when you > get enough > >to make a 20" section! > > Actually, going section by section, instead of (oh, the > price tag) an > 88 note weight rod, might be a little unstable. If the key frame is > forced into conformity with the keybed, only in that one section, > then the other sections are free to lift as they please. This would > leave that section being leveled without the influences of > the other > sections of the frame. That is, with the action frame fastened and > the Top Action Weight on the caps. The better bedded the frame is, > the less error might hide here. > > I had been thinking of something similar, except with > tapered weights > which hung loosely on the rod, like beads on an abacus (or > "washers" > on a pool hall score line). Doing an entire keyboard > shouldn't be too > unwieldy. The individual weights could be spaced to put one > to a key. > The tapering of the weights should resemble a Top Action > Weight curve. > > I'm sure this has been tried before (and possibly discarded). How > 'bout RicB applying some of his magnetism to this job. For > instance a > magnetic strip which would form a clip around the top of that far > side of a key, which would locate and secure a magnetic weight. > > And yes, Ron, about those vampire bite marks, well. > Leveling is only > done at 60,000 mile intervals. It's only done with the knowledge > that it will leave unsightly scars which will speak badly > of us when > we're not around. Hey, abuse is abuse, and the public is obliged to > report us. <g> > > Bill Ballard RPT > NH Chapter, P.T.G. > > "Lady, this piano is what it is, I am what I am, and you > are what you are" > ...........From a recurring nightmare. > +++++++++++++++++++++ > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives >
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