Century HummingBird Manual - Página 3

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Transmitter Adjustments

All flight trimming adjustments should be done on a flat, hard surface in a minimum area of 20 feet by 20 feet to ensure that trimming can be

completed. All helicopter trimming is always observed from the pilot home position. Position the Hummingbird 6 feet ahead of your position

with the nose forward. When observing reactions from the helicopter, always think in terms of which direction the nose moves. Never be

concerned with the tail, and never watch the tail. It is recommended to use optional training gear, #CNE053 before trying to trim or fly the

model.

Rudder Setup - Turn the transmitter on. Insert your hand and hold the landing gear firmly while making the battery connection, ensuring

that the main and tail rotor blades will not touch yourself or anything on the testing surface. Move the helicopter to the testing position, 6

feet in front of yourself. Slowly raise the throttle until the main blades are slowly turning. Carefully add right rudder on the transmitter, and

observe that the nose of the helicopter turns to the right. If the helicopter turns to the left, reverse the rudder channel on the transmitter.

Gyro Setup - Gyro gain is preset. Insert your hand and hold the landing gear firmly while making the battery connection, ensuring that the

main and tail rotor blades will not touch yourself or anything on the testing surface. Wait 5 seconds after power on to initialize the gyro

(blinking green LED goes solid), do not move the helicopter during this time. Verify that when the rudder stick is moved to the right the nose

rotates to the right, the throttle stick may need to be raised slightly to activate the electric motors. Holding the tail boom at the back of the

frame from below jerk the nose to the left, the tail rotor should start rotating moving the nose right. This may take a few tries to verify gyro is

in the correct direction. If the helicopter is powered up with the gyro reversed, the helicopter will spin uncontrollably. To reverse the gyro

direction, reinstall the gyro upside down. Repeat the gyro setup test.

Aileron & Elevator Setup - Turn the transmitter on. Insert your hand and hold the landing gear firmly while making the battery connection.

While looking at the swashplate, move the aileron stick to the right and verify that the swashplate tilts to the right, when viewing the

helicopter from the rear. Again, move the elevator stick forward and verify that the swashplate tilts forward. If any channel is backwards,

simply toggle the reversing switch on the transmitter.

Hummingbird Trimming

Blade Tracking and Lift Adjustment - If the transmitter throttle stick is at 1/2 power and the helicopter will not lift off the

ground, bend or twist the main blades slightly to increase the angle of attack of the blades and adjust both blades equally. This

will increase the blade pitch.

Twist the blade tip upwards.

It is possible that after twisting or bending the blades that the blades may go out of track. When viewed from the side, there

appears to be two blades. To correct this decrease the pitch on blade A and increase the pitch on blade B until only one blade can

be seen. Attaching a small piece of colored tape to the tip of one blade will make this easier.

Control Movement - All trimming of the Hummingbird should be done one click or detent of the subtrims at a time until it will

rise without moving left, right, forward or backward at a location without wind. Some tail rotation is normal at lift off until it is

hovering. Start by lifting the Hummingbird 3-6 inches at a time to practice lift off and landing.

Move elevator stick forward,

heli moves forward.

Move aileron

stick left, heli

moves left.

Move elevator stick backwards,

heli moves backwards.

Move aileron stick

right, heli moves right.

While holding

the blade near

the rotorhead.

Move throttle

stick upwards,

heli rises.

Move throttle

stick downwards,

heli decends.

Both blades

should track in the

same line A=B.

Move rudder

stick left, nose

moves left.

Move rudder stick right,

nose moves right.