Sharp key dip/height

[Isaac OLEG]

Good question.
Height above the whites is 12mm or 12.5mm not 14mm (too high)unless
you are obliged because new plastic where installed on the white keys
but the keys where thinned before - then the sharps are too low when
depressed if you stick with standard height 14 mm height may be
uncomfortable.

I have no precise measure with the height of the sharps when depressed
, a few mm above the whites, it may well be piano related as the dive
of the sharps will differ in long keys vs. short ones.

Too low sharps dip is very unpleaseant, too high is tiring.

You can roughly check the original relation by comparing the height of
the black key at the capstan level with whites when 3 keys are
depressed (feel it with a finger) that gives also useful information
about the rise of the sharps.

Basically sharps dip may be checked by touch & feel to produce the
same aftertouch than whites

HTH (Hope That helps)
BR (Best Regards)
G (Greetings)
<G>

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 James Perkins
> Envoye : jeudi 10 juillet 2003 09:00
> A : pianotech@ptg.org
> Objet : Sharp key dip/height
>
>
> Is there a recommended height above the white keys for
> black keys when
> they are depressed?  In other words should they be say 14
> mm above the
> white keys with a 10mm dip to about 4mm in the down
> position?  Or is it
> 'piano specific'?
>
> I would appreciate your comments.
>
>
> James Perkins
> 42 Marlee Road
> Parklands
> WA 6210
> Australia
>
> 08 9581 6354
> Mobile 0401674447
>
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