Key Leads and Inertia - radius

[Sarah Fox]

Hi Ron,

If a radiused block were mounted to the underside of the key stick with
spring-tensioned straps, and if the radiused block had holes that fit over
positioning pins in the key frame...  Then I think it would be feasible.
The key/block combo would lift off just like a conventional key.

Peace,
Sarah

----- Original Message -----
From: "Ron Nossaman" <RNossaman@cox.net>
To: "Pianotech" <pianotech@ptg.org>
Sent: Friday, May 02, 2003 10:01 AM
Subject: Re: Key Leads and Inertia - radius


>
> >Hmmmm...  Then I guess I'll reconsider.  I can think of a way to keep the
> >key from walking on the balance rail pin, but it would be rather
invasive --
> >not worth it for a retrofit.  The idea would be stolen from a children's
toy
> >I'm at a loss to name or describe.  Ummmm....  One of those floppy,
> >cascading thingamagigs...  You know... With the wood blocks and the cloth
> >straps...  <hurumph...>  Anyway, I think I'll leave it alone.
> >
> >Thanks, Isaac.
> >
> >Peace,
> >Sarah
>
>
> Sarah,
> That has occurred to me too - opposing tensioned straps. There's probably
> an official  and intimidating sounding name for it, but I don't know what
> it might be. This system is (was?) used in disc drives for head
> positioning. It works very well, is touchy to set up if you want close
> tolerance control, relatively expensive, and pretty effectively ties part
A
> to part B, making key removal a pain in the center rail.
>
> Nice try though.
>
> Ron N
>
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