RPX Technologies DynaVibe Classic, Руководство пользователя

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17
Guide to Dynamic Balancing V1.09
WWW.RPXTECH.COM
Completing Balance
To move test weights outward or inward, the moment of the weight correct
must remain constant. The mass times the radius of the position must remain
the same between the trial weights and permanent weights.
For instance, if a trial weight correct is 10 grams at 12 inches, the total
moment of the system is (10 grams x 12 inches) 120 gram inches. To move
this amount of correction inboard to the spinner backplate, at a radius of 6
inches, the total mass must be increased to 20 grams (20 grams x 6 inches)
120 gram inches.
The table below shows the weight of common AN hardware.
Part Number
Weight,
Grams Description Type
AN960-10L 0.5 Flat Washer 3/16 Light washer
AN960-10 0.9 Flat Washer 3/16 washer
AN970-3 3.9 Flat Washer 3/16 washer
AN365-1032A 2.2 Elastic Stop Nut 10-32 nut
AN525-10R6 2.1 Washer Head Screw 10-32 x 3/8 screw
AN525-10R7 2.3 Washer Head Screw 10-32 x 7/16 screw
AN525-10R8 2.6 Washer Head Screw 10-32 x 1/2 screw
AN525-10R9 2.7 Washer Head Screw 10-32 x 9/16 screw
AN525-10R10 3.0 Washer Head Screw 10-32 x 5/8 screw
AN525-10R12 3.4 Washer Head Screw 10-32 x 3/4 screw
AN525-10R14 4.1 Washer Head Screw 10-32 x 7/8 screw
AN525-10R16 4.4 Washer Head Screw 10-32 x 1 screw
AN525-10R18 4.8 Washer Head Screw 10-32 x 1 1/8 screw
AN525-10R20 5.4 Washer Head Screw 10-32 x 1 1/4 screw
Documentation
The dynamic balance solution should be documented in the logbook
with the mass and location of the corrective weights. A decal should
be applied to the spinner or propeller hub to show that the assembly
has been dynamically balanced.