Upweight Maximums

[David Love]

I stand corrected.  Bill is right that very low SW's could get friction
down in that area.  In that case, a high downweight but low inertia action
can feel responsive, though that is different than "light".   I think that
having adequate upweight is important and I would choose a slightly higher
balance weight in order to achieve adequate upweight.  But it would not be
my choice to set the action up as described.   

David Love
davidlovepianos@earthlink.net


> [Original Message]
> From: David Love <davidlovepianos@earthlink.net>
> To: PTG <pianotech@ptg.org>
> Date: 4/6/2003 3:58:48 PM
> Subject: RE: Upweight Maximums
>
> I don't see how high upweights will make the action feel lighter.  The
case
> you describe has BW at 50.  Friction of 8-10 grams is not likely in the
> lower end of the piano unless the pinning is really loose.  So that would
> put downweights in the 60 - 65 range.  Too much for my liking.  
>
> David Love
> davidlovepianos@earthlink.net
>
>
> > [Original Message]
> > From: Richard Brekne <Richard.Brekne@grieg.uib.no>
> > To: PTG <pianotech@ptg.org>
> > Date: 4/6/2003 1:18:36 PM
> > Subject: Upweight Maximums
> >
> >
> > Hi guys,
> >
> > A recent email presented to me a thought I have not really considered
> > before and I thought I would throw it out to you all to hear your
> > thoughts.
> >
> > The "heaviness" of the action and the explanations for this is something
> > that is continually up for discussion, and I was newly presented with
> > the idea that one should try and configure actions so that static Up
> > Weights end up somewhere in the low 40 gram weight range, with friction
> > weights around 8 to 10.  In addition, and action should not have any
> > assistance from springs, magnets or any other such contrivance to play
> > into the counter balance question.
> >
> > This means, as far as I can tell, that this technician is looking for
> > rather heavy downweights, which is indeed her stated preference. But her
> > reasoning for this is interesting. It is her position that this
> > configuration will feel lighter then any configuration possible that has
> > Up Weights significantly below the levels she specifies.
> >
> > So.... I'd love to hear some thoughts on the matter.
> >
> > Cheers
> >
> > RicB
> >
> > --
> > Richard Brekne
> > RPT, N.P.T.F.
> > UiB, Bergen, Norway
> > mailto:rbrekne@broadpark.no
> > http://home.broadpark.no/~rbrekne/ricmain.html
> >
> >
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>
>
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