RPX Technologies DynaVibe Classic, Руководство пользователя

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5
Guide to Dynamic Balancing V1.09
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Check blade track and pitch
The simplest way to check for blade track is to position a wood block or other
rigid structure next to a blade tip. Then rotate the blade carefully (avoid
moving the aircraft) to the next blade and verify that the blade tip is in the
same relative position as the previous blade. You may need to remove the
spark plugs to allow the engine to rotate freely. If one blade is positioned
differently from another, this indicates that either the blade is bent or the
installation is unacceptable. Again, a dynamic balancer will not adequately
correct an aerodynamic imbalance. According to FAA Advisory Circular
43.13-1B, each blade track should be within 1/16 of an inch.
Example: If a small metal chip or burr is
allowed between the propeller and prop flange,
then one blade will have a higher angle-of-
attack than another blade, causing a vibration.
CAUTION:
Verify ignition and fuel are off
prior to moving propeller