4
right should cause the aileron on the right wing to move upwards, causing the right
wing to dip and bank the plane to the right. Conversely, moving the stick to the left
should cause the left wing to dip and bank the plane to the left. If movement of
the stick causes the aileron surfaces to move in the opposite direction, move the
reversing switch for aileron channel 1 to the opposite position.
ELEVATOR:
Channel 2 controls the airplane’s elevator. These moveable surfaces
on the tail rotate the airplane about an imaginary line which extends through the
center of both wings from wing tip to wing tip, known as the “pitch axis”. Moving
the elevator stick upwards should cause the plane’s elevators to move upwards,
causing the nose of the airplane to rise. Moving the stick down should cause the
plane’s elevators to move down, and cause the nose of the airplane to drop. If
movement of the stick causes the elevator surface to move in the opposite direction,
move the reversing switch for elevator channel 2 to the opposite position. To help
maintain the airplane’s altitude while performing a bank turn, gently pull back on
the elevator stick while defl ecting the ailerons.
THROTTLE:
Channel 3 controls the airplane’s throttle. Pushing the throttle stick
forward should cause the R.P.M. of an electric motor or combustion engine to
increase. Pulling the throttle stick down (away from the Tx handle) should cause
the motor or engine’s R.P.M. to decrease. If movement of the stick causes the
throttle to move in the opposite direction, move the reversing switch for throttle
channel 3 to the opposite position.
RUDDER:
Channel 4 controls the airplane’s rudder. This moveable surface on
the tail moves sideways and rotates the airplane about an imaginary line from
the bottom of the airplane’s fuselage upward through the center to the top of the
fuselage, known as the “yaw axis”. Moving the rudder stick to the right should cause
the rudder to move to the right, and cause the airplane’s nose to point to the right.
Moving this stick to the left should cause the rudder to move to the left, and cause
the airplane’s nose to point to the left. Using the rudder along with aileron controls
can point the airplane’s nose into a turn without pitching up or sliding through the
turn. If movement of the stick causes the rudder surface to move in the opposite
direction, move the reversing switch for rudder channel 4 to the opposite position.
TRIMS:
Each of the four channels includes a trim lever, located directly adjacent
to the main control stick. Trim levers are used to fi nely adjust the center position of
the respective channel.
The trims for aileron, elevator, and rudder channels function digitally. The levers
always rest at mechanical center position. Briefl y pressing the spring-loaded lever
to either side of center position will adjust the center position of the respective
channel electronically, and can be observed on the servo. Holding the trim lever
to either side of center will cause the servo output to rotate repeatedly. Finely
trim each of these channels so that during fl ight the model does not veer in an
unwanted direction when the main sticks are released and back at center position.
The throttle channel includes a “mechanical” or analog trim lever. This trim lever can
be physically moved up or down and rest at any point in the range of movement.
The mechanical position of the lever will adjust the throttle channel’s electronic
position, and can be observed on the servo. This can fi nely adjust the engine/
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