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Here's another couple of pix to show a 3 rotor being balanced. Notice the
Mallory Metal added to the front counterweight to shift the balance axis.
The factory front counterweight was originally drilled off centre by the
factory due to the rotors not all being the same weight. During balancing,
all the rotors were reduced back to the same dynamic weight as the lightest.
Then put on the shaft.
Cheers,
Leon
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