Keylead inertia and leverage

[Richard Brekne]

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Grin... if I may...

I think this is a case of talking sort of past each other.... Mike is, I
belive, saying "less inertia relative to putting leads out on the end of
the key"

I dont think he is saying that more weight period results in less
inertia... that would be silly.... :)

Richard Moody wrote:

> ----- Original Message -----
> From: Mike and Jane Spalding <mjbkspal@execpc.com>
> To: <pianotech@ptg.org>
> Sent: Monday, April 02, 2001 3:35 PM
> Subject: Re: Keylead inertia and leverage (was Re: Ideal leading
> pattern:)
>
> > Ric,
> >
> > This is one of those counterintuitive concepts:  how can more weight
> result
> > in less inertia?
>
> Please tell me where I said "more weight will result in less interia".
> I believe I said.
> QUOTE  "More weight will require MORE interia"
>
> Once again let me say,  It seems to me the heaver the key the more
> inertia required to move it.   The more mass the key has the more
> EFFORT  it will "SEEM" to be required to move it.
>
> Now Please tell me how I am saying
>
> >how can more weight result
> > in less inertia?
>
> Especially considering I asked.......
>     >>but isn't
> > > more force is needed to accelerate the heavier key to the same
> speed
> > > as the lighter key if both keys have  the same balance
> tio?   ---ric
>
> ---ric
>
> > > >
> > >     A key with 2 weights near the front rail can be made to
> require
> > > the same down weight as a key with 4 weights near the balance
> rail.
> > > The key with 4 weights is heaver than the key with two weights.
> This
> > > should make it feel harder to press it down (accelerate it) exp on
> a
> > > ff  note.even though it still has the same down weight as the key
> with
> > > only two weights.  The weight is the same to move each key, but
> isn't
> > > more force is needed to accelerate the heavier key to the same
> speed
> > > as the lighter key if both keys have  the same balance
> tio?   ---ric
> > >
> > >
> >

--
Richard Brekne
RPT, N.P.T.F.
Bergen, Norway
mailto:Richard.Brekne@grieg.uib.no


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