Hi, Yes, Craig Brougher is right, I have a definite disadvantage, as
far a mechanical music is concerned, because of the far away country I
live in. Oh well, I do the best I can under the circumstances.
Here is a question to Craig and other experts: On the upright Duo-Art,
what do you think the pump-spill pressure should be with the roll
stopped (Tempo 0), no notes playing, and at zero level?
Mike Kitner's pamphlet requires it to be 30" but I would like some
confirmation on this.
I found the pressure to be about 22-25" on the uprights I have
worked on so far.
On my home piano, (my experiment model), I can only get it up to 30" by
replacing the original felt on the spill cover with a different one and
by installing a thin gasket around its base. (There are no leaks
I ask this because I now find the piano too loud at levels 8 and
higher. It ranges from the normal very soft to a deafening extra loud.
I did double check that the spill is fully closed at level 10 and
slightly leaky at level 9. All other adjustments are correct as well.
Bernt W. Damm