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MMD > Archives > October 1997 > 1997.10.14 > 17Prev  Next

Gulbransen Pedal Problem
By Craig Brougher

Bernt Damm was asking about a Gully problem -- I mean a Gulbransen
problem.  I'm wondering if he has run into the same thing I have run into
-- a linkage travel problem(?)

When adjusting dampers, the first thing you need to do in any piano is to
make absolutely sure that the dampers all come off their strings

Now some technicians stomp the loud pedal, check once, give their
blessing, and that's that.  What you must do, to do it right, is to just
barely "crack" the pedal until you see the first damper "budge."  Fix it.
Keep "barely budging" the pedal and evening the dampers until they all
lift together, just like a row of tin soldiers.  It takes some time.

The next day that you come back to this piano and see that all the
dampers are now properly adjusted, that is the time to fix the player's
connection to the piano, and not before.

Some players have lots of latitude in that adjustment, and some have
practically zero!  Those late model Gullys had practically none at all,
so you have to take out all the lost motion in the piano, first, then
finally adjust up the pneumatic rod without any lost motion to the pedal
rod, and get it to work.  Give those two valves plenty of gap.

Craig Brougher

(Message sent Tue 14 Oct 1997, 22:03:33 GMT, from time zone GMT.)

Key Words in Subject:  Gulbransen, Pedal, Problem

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