Experimental knuckle, actually roller

[Isaac OLEG]

I confirm, thanks for the picture.

Loosing  the usual feedback fro roller/jack & lever friction was very
uncomfortable to the pianists that try it.

Its amazing how that friction seem to be important to them for control
tone. I believe they use it the same way we use sound energy for
tuning as some parameter we like to count on .

That is why actions that have the roller graphited are always less
expressive I guess.

But this can also depend of the pianist way  of playing.

Greetings.


Isaac OLEG

Entretien et réparation 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 JBairdRPT@cs.com
> Envoyé : lundi 23 juin 2003 04:50
> À : files@ptg.org
> Objet : Experimental knuckle, actually roller
>
>
> On display at the Europiano Congress in Dessau, Germany
> last month was
> a Steingraeber grand piano with experimental knuckles
> installed (see
> photo). These knuckles are actually small felt wheels that
> rotate on a
> pin. Holding the shank off of the repetition lever, you can
> spin the
> knuckle with your finger.
>
> The Steingraeber people say that this knuckle reduces the
> downweight by
> about 10 grams, but has no effect on the upweight. Initial
> reports are
> that children like the touch, but that pianists do not.
>
>
> John Baird, RPT
> Registered Piano Technician
> Ph   (217) 429-5651
> Cell  (217) 433-5651
>
>
> [Photo at:]
>
> https://www.moypiano.com/ptg/files/attachments/d2/b6/f0/7e/
> des13rollerknucklee2.JPG
>
> [Alternate URL:]
>
> http://tinyurl.com/ezse
>
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>