1881-83 Steinway,#48638, image #2

[Isaac OLEG]

Yesss, the weigh issue (DW , UW) may not make us forget the mass
displacement , inertia and acceleration.

The DW is even more high at the begin of the stroke than at the end -
on a grand).

I.O.


> -----Message d'origine-----
> De : pianotech-bounces@ptg.org
> [mailto:pianotech-bounces@ptg.org]De la
> part de Farrell
> Envoyé : vendredi 22 novembre 2002 00:54
> À : Pianotech
> Objet : Re: 1881-83 Steinway,#48638, image #2
>
>
> Yes, but what about inertia on a forte blow? I believe that
> is where you will feel the difference (aside from tonally).
>
> Terry Farrell
>
> ----- Original Message -----
> From: "Ken Jankura" <kenrpt@earthlink.net>
> To: "Pianotech" <pianotech@ptg.org>
> Sent: Thursday, November 21, 2002 6:44 PM
> Subject: Re: 1881-83 Steinway,#48638, image #2
>
>
> > The weight issue, unless only tonally related, doesn't
> make much sense. In
> > an experiment I did with a vertical action, the
> difference in downweight
> > with a 4 gram treble hammer and a 12 gram bass hammer was
> only 6 grams at
> > the key front, so I think the hole in the hammer molding
> would have no
> > effect at all at the the key. Tonally though, yes, maybe.
> > Ken Jankura rpt
> > Fayetteville PA
> >
> > ----- Original Message -----
> > From: "Phil Bondi" <tito@philbondi.com>
> > To: "Pianotech" <pianotech@ptg.org>
> > Sent: Thursday, November 21, 2002 6:32 PM
> > Subject: Re: 1881-83 Steinway,#48638, image #2
> >
> >
> > > > The holes start at A5 and continue through to C8. The
> holes are clean
> > > > and symmetrical with no evidence of lead, or of any
> other after
> > > > market activity to my vision.
> > > >
> > > OK..we all believe you..pictures don't lie..but are you
> asking if a
> > > 'true-to-form' restoration of this part of the
> instrument involves the
> > > inclusion of these holes..or are you just curious as to
> why they are there
> > > to begin with?
> > >
> > > I'd say Greg's initial thought about weight reduction
> makes sense.
> > >
> > > Were manufacturers really THAT particular about weight
> back then? My guess
> > > is yes(I have yet to feel a 'heavy' action in a piano
> that is 80+ years
> > > old), but why would the reduction be in such a spot as
> the hammers
> > > themselves?
> > >
> > > Have you done any weight analysis to this action?
> > >
> > > I can't wait to do mine(it will be a few years, but it
> will be fun!),
> > >
> > > -Phil Bondi (Fl.)
> > > tito@philbondi.com
> > >
> > >
> > >
> > >
> > >
> > > _______________________________________________
> > > pianotech list info:
https://www.moypiano.com/resources/#archives
> >
>
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