Hello Isaac ----- Original Message ----- From: "Isaac sur Noos" <oleg-i@noos.fr> To: "Pianotech" <pianotech@ptg.org> Sent: Monday, October 20, 2003 10:27 PM Subject: RE: Leveling Sticks WAS: Steinway D key levelling (Hamburg model) You said: > 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 ! > I believe at Yamaha they also have an electro-mechanical device for pulling the new strings into tune - at the touch of a button! All at the same time. That must save a lot of time! Michael G (UK) > > > 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 > > > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives > >
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