Back checking Height, an incredible help

[Isaac OLEG]

Hello,

Makes me remember that I screwed a full 88 note action's backcheck for
that reason (it worked)
While the action is out of the shop, tapping the backcheks seems not
feasible, or I don't see with what mthod.

Still believe that is because the thump of the key is more synchro
with the backchecking when at this optimum configuration. But I'd say
that is mysterious also, if you wish.

Best

Isaac OLEG

Entretien et reparation de pianos.

PianoTech
17 rue de Choisy
94400 VITRY sur SEINE
FRANCE
tel : 033 01 47 18 06 98
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> -----Message d'origine-----
> De : pianotech-bounces@ptg.org
> [mailto:pianotech-bounces@ptg.org]De la
> part de antares@euronet.nl
> Envoye : mercredi 28 mai 2003 20:55
> A : Pianotech
> Objet : Backchecking Height, an incredible help
>
>
>
> On woensdag, mei 28, 2003, at 20:07 Europe/Amsterdam,
> Richard Brekne
> wrote:
>
> > Yes... ... I remember you showing us this one. Too this
> day I am still
> > wondering if I suffered from some sort of persuasive  hypnosive
> > suggestion
> > syndrome or something.
>
> RICARDO! BABY! Are you suggesting I tried to hypnotize a bunch of
> highly educated Norwegian techs?
> (I actually wish I could shhhhhh!)
>
> (; >))
>
>
> > I was astounding indeed, mostly because one is
> > immediatly without any hint of a reasoning why the effect
> could in
> > this or
> > any other universe be possible. Yet there it was.
>
> Yep...there it was.
> So for those who have not tried this before :
> You are sitting in front of a well regulated grand piano
> and you try to
> find a few notes which sound a little too soft compared to
> the rest of
> the hammers. Try hard to memorize the sound as it is right
> there and
> then.
> You then cause the hammer of the too soft note to make
> drop, and after
> drop has taken place, you measure the exact distance
> between the hammer
> tail and the top of the back check.
> If it is exactly 2 mm you must make use of alternative
> ways to alter
> the volume.
> However, if the top of the back check is for instance too high you
> should make use of a back check turning tool and carefully
> screw the
> back check down a few turns (but be careful not to crack the back
> check!!) to achieve a  2 mm gap between tail and back check.
> Now you listen carefully and you will notice that the sound is
> definitely different.
>
> Also try to remember that according to a Ricardo Brekne
> "this guy in
> Amsterdam likes to use his persuasive  hypnosive suggestion
> syndrome,
> or something"
> Then ask yourself : are those guys over there OK?or what?
> (Euro trash,
> what?)
>
> GRINNNNNNNNNNNNNN.......................
>
> >
> >> The funniest thing is (I remember this now) that up to
> now, nobody in
> >> Japan nor on this list, was able to explain this phenomenon.
> >
> > I'd like to hear that one for sure.
> >
> >
>
>
> Antares,
> The Netherlands
>
> see my website at : www.concertpianoservice.nl
>
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