Leveling Sticks WAS: Steinway D key levelling (Hamburg model)

[Isaac sur Noos]

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
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> -----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.
> +++++++++++++++++++++
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