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What is blade tracking? |
Correct blade tracking is one of the most
important factors regarding a helicopter that flies well. Blade
tracking can be described as the rotational path of the individual
main rotor blade while spinning. Incorrect blade tracking will
result in a poor flying helicopter, unnecessary vibration during
flight, instability and drag on the motor, which in turn causes loss
in power. So, it is very important that the blade tracking is
correctly tuned for best flying results.
To check the blade tracking you must to do the following. Make sure
the main rotor blades are secure in the blade holders. The rotor
blades must be color code with tracking decals on the tip of the
blades. Normally red and blue. Place the helicopter on a table so
that you can view the blades at eye level. Keep the helicopters
skids firmly on the table with one hand. Make sure you are at a safe
distance from the blades when applying the throttle.
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As you bring
the blades up to speed use the colored tracking decals to note which
blade is tracking lowest. Power the helicopter down and adjust the
pitch of the low blade by altering the length of the linkage between
the blade holder and flybar. When you pop the linkage off from the
ball joint, adjust the length of the linkage by screwing the end of
the linkage in or out. This must be done in half turn increments.
Pop the linkage back and do another blade tracking test. Keep on
doing this process until the blade tracking is perfectly inline.
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