F3A CONTRAST LT, Instruction Manual, Page: 18 / 80

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3.3. Servos Selection
For the control surfaces of Contrast LT we recommend use follows
Hitec
servos:
Ailerons
– two (2) Digital Servos 5-6 kg/cm;
Elevator
– two Digital Servos 5-6 kg/cm or one (1) Digital High Speed Metal
Gear Servo 8-9,5 kg/cm;
Rudder
– one (1) Digital High Torque Servo 18-24 kg/cm;
Make sure you use same or equivalent torque servos that are digital.
Please do not risk your plane by using low torque or analog servos. Using
of weak servos will increase chance of flutter and will reduce the accuracy
of the airplane flight.
3.4. Radio Selection
For Contrast LT we recommend use minimum 6-channel 2,4 GHz computer
radio system