Spektrum BEAST X AR7210BX Mode D'emploi page 33

Dials and Tail Gyro Gain
To adjust the dials: Only use the original Spektrum AR7210BX adjustment tool
to prevent damage to the dials. Do not turn the dials past their end points or
damage will occur.
Dial 1: Swashplate—Cyclic Gain
Turn Dial 1 clockwise to increase the swashplate gain.
The factory setting for Dial 1 is horizontal (50% swashplate gain). Use
the factory setting for your first flights. This setting is ideal for 450 class
helicopters. If you are flying larger helicopters it may be necessary to slightly increase the
cyclic gain positions.
The higher the gain, the more aggressively the helicopter will stop after cyclic movement and
the helicopter will be more stable in the air.
Cyclic Gain Too High
Cyclic Gain Too Low
Dial 2: Swashplate—Direct Cyclic Feed Forward
Turn Dial 2 clockwise to increase the swashplate's direct cyclic stick feed forward.
The direct cyclic stick feed is the part of the stick input going directly to the servos. When
correctly adjusted, the direct stick feed allows the control loop to make small corrections and
work more efficiently.
Factory setting for Dial 2 is horizontal.
Direct Cyclic Feed
Forward Too High
Direct Cyclic Feed
Forward Too Low
Increasing the direct cyclic feed forward will cause more cyclic stick input to go directly to the
aileron and elevator on the swashplate giving a more responsive feel. Decreasing the direct
stick feed forward does the opposite.
The optimal setting depends on many factors, including blades, servos, head speed, size and
mass of the helicopter.
IMPORTANT: The direct cyclic feed forward does not affect the maximum rate of rotation.
If the helicopter rotates too slowly:
1. Check the swashplate limiter settings in Setup Menu Point L
2a. Change the control behavior in Parameter Menu Point B or
2b. Increase the servo travels or dual rate in your transmitter
Helicopter tends to oscillate on the elevator axis.
The helicopter does not stop nor does it move precisely;
tends to have a life on its own. In fast forward flight, it may
dive down or rear up suddenly.
This causes over-control in your cyclic input. When set too
high, the control loop overshoots and needs a steer back
correction. This causes pitch backs (bobbles) on cyclic stops
and imprecise fast forward flight.
The helicopter will feel softer, slower and less direct.
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