21
EN
Adjusting the Rudder Gyro Gain
• If the tail wags or oscillates, lower the gain on the gyro.
On your transmitter’s gyro menu, decrease the gyro gain values a small amount
at a time until the helicopter is stable within a particular fl ight mode
• If the tail is drifting while hovering, increase the gain on the gyro.
On your transmitter, increase the gyro gain values a small amount at a time until
the tail starts to wag/oscillate. Afterwards, reduce the gain until the tail stops
wagging/oscillating within a particular fl ight mode.
Post-Flight Inspection and Maintenance Checklist
√
Ball Links
Make sure the plastic ball link holds the control ball, but
is not tight (binding) on the ball. When a link is too loose
on the ball, it can separate from the ball during fl ight and
cause a crash. Replace worn ball links before they fail.
Cleaning
Make sure the battery is not connected before cleaning.
Remove dust and debris with a soft brush or a dry lint-free
cloth.
Bearings
Replace bearings when they become notchy (sticky in
places when turning) or draggy.
Wiring
Make sure wiring does not block moving parts. Replace
damaged wiring and loose connectors.
Fasteners
Make sure there are no loose screws, other fasteners or
connectors. Do not over tighten metal screws in plastic
parts. Tighten screw so parts are mated together, then turn
screw only 1/8th of a turn more.
√
Rotors
Make sure there is no damage to the rotor blades and
other parts that move at high speed. Damage to these
parts includes cracks, burrs, chips or scratches. Replace
damaged parts before fl ying.
Gyro
Make sure the AR7200BX is securely attached to the
frame. Replace the double-sided tape when necessary. The
helicopter will crash if the AR7200BX separates from the
helicopter frame.
Gearing
Make sure the gears are all in good condition. Watch for
chipped teeth or excessive wear. White dust around gears
is an indication of excess wear. Replace damaged gears
before fl ying.
Blade Tracking
WARNING:
Always maintain a safe distance of at least 15 meters
(45 feet) when checking the main rotor blade tracking.
To check the blade tracking:
1. Put the helicopter in a hover at an altitude near eye height.
2. Watch the movement at the blade tips. Both blades should travel in the
same plane.
3. If one blade tip appears to be higher than the other, land the helicopter,
disconnect the fl ight battery and adjust the blade linkages.
4. Repeat Steps 1 through 3 until both blades are moving in the same plane.
AR7200BX Fine-tuning and Adjustment
Observed Behavior
Suggested Adjustment
Cyclic response is too slow or too fast
Adjust end points to fi t your fl ying style. Refer to your transmitter instruction
manual for more information
Adjust the control behavior parameter in the AR7200BX to fi t your fl ying style
Control inputs feel delayed
Increase Dial 2 on the AR7200BX
The helicopter seems to overshoot control input and then return
Decrease Dial 2 on the AR7200BX
The helicopter tail stops too abruptly
Decrease Dial 3 on the AR7200BX
The helicopter tail does not stop precisely
Increase the rudder gain in your transmitter
Increase Dial 3 on the AR7200BX
Adjust the rudder heading lock gain parameter in the AR7200BX
