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<DIV> Listers</DIV>
<DIV> After a recent encounter with a 10 year old 6 ft. Petrof ,=
my
once fairly high opinion of them has sunk. I generally have liked the sound =
of
there bellies & the workamnship looked good but I had the followin=
g
experience.</DIV>
<DIV> The action although upon examination had a nicely done 5.3 overa=
ll
action ration the touch was extremely heavy high 60's down & below 20 up=
.
The problem is that the hammers were just way to heavy for example Note 16 w=
as
10.5 grams. That's hammer wt. not strike weight.</DIV>
<DIV> So extrapolate those heavier than normal readings thru the rest =
of
the scale.</DIV>
<DIV> Since the desired service was to make it play more like a Saturn=
than a truck & no parts were being changed the original parts were=
used. The remdey was to add one lead to a sparsely leaded keyboard&nbs=
p;
& then adjust the wippen springs. Even at that the average down up weigh=
t
was around 56 to 22 up which is a 39 balance weight.</DIV>
<DIV> I believe the real solution was a lighter set of hammers &a=
mp;
subsequent even leading applied with springs detached to some higher than no=
rmal
nominal number down/up numbers & then re -tweaking the springs. for a li=
ght
bit of wippen weight removal from the system.</DIV>
<DIV> This to me was a prime example of a nicely done leverage set up =
that
was doomed from the git go due to extreme hammer weights It seems  =
;all
grand piano actions fall within certain reasonable & typical leverages t=
hat
when exceeded are problematic until rectified by appropriate counter
measures.</DIV>
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