FUTABA T8J-2.4G Instruction Manual page 71

Gyros:
information on gyro types, please see p. 70.
Retracts: Retractable landing gear is often used on scale models for increased realism and on high performance models to
servo used for mechanical retracts will continue to draw full power the entire time, prematurely draining the battery
Pneumatic (air driven) retracts use a standard servo to control an air valve which directs air into or out of the retract units,
moving the gear up or down. Pneumatics are easier to install but require added maintenance of the air system.
Gear Doors:
Kill Switches:
Bomb Drops, Paratroopers, and other Released Items:
AUX-CH .
71