Damper Lift Problem

[Joe & Penny Goss]

Hi Ed,
If a sudden change, you may have a screw loose,<G> or mice have selectively
eaten a felt or leather punching/bushing used to take up slack
Joe Goss
imatunr@srvinet.com
www.mothergoosetools.com
----- Original Message -----
From: "Avery Todd" <atodd@UH.EDU>
To: <caut@ptg.org>
Sent: Monday, September 17, 2001 8:11 AM
Subject: Re: Damper Lift Problem


> Ed,
>
> Thanks for the reply but my whole point is that the lift has changed.
> Suddenly, it seem like. It's been fine until just recently.
>
> Avery
>
> >Avery writes:
> ><<I did all the usual stuff. I took up the excess play but that
> >made the arm under the keybed so high that there was not enough
> >space before it hit the felt stop.<<
> >
> >      You may need a longer pitman...
> >
> >>>The only thing left is for the damper underlevers to
> >be too high off the tray. Which is exactly what I finally figured
> >out is the problem. Now, the lift with the keys is way too late,
> >which would account for the problem of the strings not getting
> >high enough off the strings. But it's the underlever position,
> >not the key end felt.>>
> >
> >    The underlevers have to be set so that the key contact is at the
proper
> >time, (usually hammer is midway to string),  and on the Steinways, make
sure
> >that the tray adjustment is close when you do this!   At this point you
will
> >be able to tell is there is enough trapwork travel to lift the hammers
via
> >the tray to the height that the sharps lift them.  The upstop rail will
act
> >as a fulcrum if there isn't enough free-play between it and the
underlevers
> >when both the key AND the pedal are depressed.
> >    Don't be afraid to add another felt pad to the tray, (which
effectively
> >lengthens the pitman), or to cut the block of felt that stops the
trapwork
> >lever's upward motion, but start with the underlevers set to the key end
felt
> >with minimal lost motion from the tray.
> >Good luck,
> >Ed Foote