QRS Pianomation Installation question.

[Jon Page]

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I think sooner or later someone will market the hardware to place the S&S=20
sostenuto rod
onto the belly rail where it is supposed to be, avoiding its removal.

That could either be the first step in complete action changing=20
(eliminating the tubular action rails)
or supplied with the retrofit kit.

One of these days . . .

Jon Page

At 12:11 AM 07/29/2000 -0500, you wrote:
> >sandra cooper wrote:
> >>
> >> Herb. I recently worked on a Steinway B with the QRS system in it . The
> >> Sostenuto mechanism had been removed. I don't much care for that, but=
 it
> >> may be what you have to do. What do the people at QRS say to do?Sandra
> >> Cooper RPT
> >> ________________________________________________________________
> >
> >
> >Just wondering . . . would someone who needs a QRS system even need a
> >sostenuto mechanism?  A monkey, maybe . . .
> >
> >R=A9dney Pritchett
>
>Well, that's probably a realistic attitude... but. Putting the real world
>on hold for a moment and centering on how I think it OUGHT to be, I'd
>rather not compromise, negate, render inoperative, sabotage, cripple,
>hobble, or butcher the existing pedal function to put in a player
>mechanism. Someone might, against all odds, occasionally want to actually
>play the thing manually (!) as if it were a real instrument. I still
>distinctly recall the horror I felt reading the section of the old
>Pianocorder installation manual where it suggested adding a booster spring
>under the damper lever arm to float the dampers enough that the poorly
>engineered solenoid system could lift them, even though the booster spring
>made the dampers nearly entirely non functional. The real fix was, of
>course, not to butcher the existing damper system down to accommodate the
>driver, but rather to re engineer the solenoid and driver circuitry to meet
>the power requirements of the damper system. That didn't happen for a long
>time.
>
>Power and stroke length isn't the problem any more with the current (sorry)
>electronic player systems, but rather physical space requirements. The
>damper pedal can be accommodated to some degree, though the leverage
>moments and throw proportions are often compromised to the point that
>"working" is only relative to "not working at all", rather than to "working
>reasonably correctly". The possibility of maintaining sustenuto function
>was apparently written off early in the design process, and only seems to
>have been reconsidered as a last minute concession just before the shipping
>packaging was worked out. From what I've seen, the shipping packaging is
>terrific, but the sustenuto still won't work with the supplied options. The
>installer has to work out the moments and throw proportions, figure out how
>the hardware will fit in the available space, fabricate the parts necessary
>to make it work, install it and, last but not least, make it work. Plan on
>spending the better part of a day on just the sustenuto if you have the
>piano in the shop where all your tools and parts are readily available. If
>you are retrofitting a working sustenuto linkage into an existing
>installation in a customer's living room, plan on charging them a day and a
>half, or two day's wages for your trouble. For that, you have to make it
>work. Or you could just pull the sustenuto, dummy the middle pedal, and
>pretend that's the way it's supposed to be.
>
>Nah, this isn't a sore point. What gave you that idea?
>
>Ron N

Jon Page,   piano technician
Harwich Port, Cape Cod, Mass.
mailto:jonpage@mediaone.net
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