Horizon Hobby Blade Revolution 235 CP Instruction Manual page 16

Adjusting the Servo Neutral Position
With the model in Servo Adjustment Mode, the control stick
and gyro inputs are disabled and the servos are held in the
neutral position. Check the position of the servo arms to
verify they are perpendicular to the servos.
• If the arms are perpendicular to the servos, no adjust-
ment is necessary. Exit Servo Adjustment Mode.
• If one or more servo arm is not perpendicular to the
servos, continue the servo adjustment process.
While watching the swashplate servos, apply fore or aft
cyclic and release. One of the servos will jump, indicating
the selected servo. Apply fore or aft cyclic and release until
the servo that needs to be adjusted is selected.
Once the servo you wish to adjust is selected, move the
cyclic stick left or right to adjust the servo neutral position
in the desired direction.
To reset the current servo to the default neutral position,
hold the rudder stick full right for two seconds.
The range of adjustment is limited. If you are unable to
adjust the servo arm perpendicular to the servo, you must
reset the servo to the default, neutral position, remove the
servo arm, and place it back onto the servo as close to
perpendicular as possible. You can then adjust the servo
neutral position using left or right cyclic stick.
Post-Flight Inspection and Maintenance Checklist
√
Make sure the plastic ball link holds the control ball, but is not tight (binding) on the ball. When a link
Ball Links is too loose on the ball, it can separate from the ball during flight and cause a crash. Replace worn
ball links before they fail.
Make sure the battery is not connected before cleaning. Remove dust and debris with a soft brush or
Cleaning
a dry, lint-free cloth.
Bearings Replace bearings when they become notchy (sticky in places when turning) or draggy.
Wiring
Make sure the wiring does not contact moving parts. Replace damaged wiring and loose connectors.
Make sure there are no loose screws, other fasteners or connectors. Do not over-tighten metal
Fasteners
screws in plastic parts. Tighten screws so the parts are mated together, then turn the screw only
1/8th of a turn more.
Make sure there is no damage to rotor blades and other parts which move at high speed. Damage
to these parts includes cracks, burrs, chips or scratches. Replace damaged parts before flying. Verify
Rotors
both main rotor blades have the correct and equal tension in the blade grips. When the helicopter is
held up sideways, the main blades should support their own weight. When the helicopter is shaken
lightly, the blades should fall.
Inspect the tail rotor for damage and replace if necessary. Verify the tail motor bolts, tail rotor adapter
Tail
bolts and tail motor mount bolts are properly tightened. Inspect the tail boom for any damage and
replace if necessary.
Inspect the main frame and landing gear for damage and replace if necessary. Check the mainshaft
for vertical play and adjust the locking collar if necessary. Verify that the main gear mesh is correct
Mechanics
and that no tight spots exist in the 360 degree rotation. Inspect all wires for damage and replace as
necessary.
EN
Swashplate Leveling
Before saving your adjustments and exiting Servo Adjust-
ment Mode, verify the swashplate is level and both main
rotor blades are at 0 degrees pitch.
If they are not, make linkage adjustments as necessary.
Saving the Servo Adjustments
1. Lower the throttle stick to the lowest position and
release the sticks.
2. Move the tail rotor stick to the left and hold for four
seconds to exit Servo Adjustment Mode. The servos will
jump indicating a return to normal operation.
3. Release the tail rotor stick.
4. Perform the pre-flight checklist procedure before flying
your model.
Control Input
in Servo
Adjustment Mode
Fore/Aft Cyclic
Right/Left Cyclic
Right Tailrotor
Left Tailrotor and
Low Throttle
16
Action in Servo
Adjustment Mode
Select Previous or Next Servo
Increase or Decrease
Sub Trim Adjustment
Hold for Two Seconds;
Neutral Position is Reset
on Selected Servo
Hold for Four Seconds;
Exit Servo Adjustment Mode