Steinway Sostenuto Adjustment

[David Love]

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Oops, got that backwards (too early out here, uncaffeinated yet).  The =
rail
needs to be above the level of the tabs when in the rest position so =
that
the rail rotates above the tabs that have not been lifted but beneath =
the
one(s) that have.  Anyway, Steinway does sell a gauge.

=20

David Love
davidlovepianos@comcast.net=20

-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On =
Behalf
Of David Love
Sent: Thursday, November 10, 2005 6:20 AM
To: 'Pianotech'
Subject: RE: Steinway Sostenuto Adjustment

=20

That does the in/out but not the height of the rail.  Steinway sells a =
nice
gauge that can be used to set the height of the rail relative to the =
tabs.
Basically, the bottom of the rail in the rest position needs to be about
1/16" below the bottom of the tabs. =20

David Love
davidlovepianos@comcast.net=20

-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On =
Behalf
Of Mark Dierauf
Sent: Thursday, November 10, 2005 5:29 AM
To: pianotech@ptg.org
Subject: RE: Steinway Sostenuto Adjustment

=20

Years ago an S&S rep showed us this trick for the sostenuto:

=20

Remove the shanks/hammers immediately adjacent to the breaks - on a B =
this
would mean hammers 1, 20, 21, 51, 52, 68 and 69. This will allow you to =
see
the sostenuto rail and tabs at the locations closest to the adjustment
points using a flashlight with the action back in place.=20

=20

Before sliding the action back in, loosen the screws and bolts that hold =
the
brackets just enough to allow the rail to slide in and out when tapped =
with
a screwdriver blade. With the action in and cheekblocks in place you can =
use
a thin long bladed screwdriver to reach down through the strings and tap =
the
brackets to position the sostenuto rail correctly.=20

=20

Of course the rest of the system needs to be in at least reasonably good
adjustment before you begin, IOW, good damper regulation, nice straight
sostenuto tabs and proper amount of throw on both sustain and sostenuto
pedals.

=20

- Mark Dierauf

=20

-----Original Message-----
From: Piannaman@aol.com [mailto:Piannaman@aol.com]=20
Sent: Wednesday, November 09, 2005 10:20 AM
To: pianotech@ptg.org
Subject: Steinway Sostenuto Adjustment

=20

Liszt,

=20

A manager at a store that I contract for requested that I figure out =
what
what was wrong with a Steinway B sostenuto pedal.  I should add that =
this
piano was restrung, refinished, new hammers, etc., but the work was not =
very
well done.

=20

Turns out, the dowel that goes from trapwork to monkey was not there.  I
fabricated a dowel that ended up being level with the keybed in the down
position.  I put the action back in and found that the lifting rail was =
not
regulated properly.  I could not get it right by sliding the rail in or =
out.
It either wasn't lifting anything, or it was lifting everything all of =
the
time.  I did not feel comfortable messing with the height without any
guidelines.

=20

Is there a trick to gauging the height and fore/aft position without =
using
endless trial and error?  I know this was a recent thread, so I'll check =
the
archives as time permits, but I wonder if anyone has any handy advice on
this one.

=20

Thanks in advance,

=20

Dave Stahl


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