4
5. Installation of servo horns and linkages
Make sure all the mechanical parts of the rotor head, the swashplate and the tail rotor are
installed correctly, all parts can move smoothly, and all the servos are installed firmly.
Mount control balls to swashplate servo horns. We recommend the distance from the ball to center is:
12.5-13mm (200-450size), 14-14.5mm (500size), 600 or larger size helicopter according to the
helicopter manual.
Mount control ball to tail servo horn. We recommend the distance from the ball to center is: 4.5mm
(200-250size), 7.5-10mm (450-500size), 13.5-15mm(600 or larger size) .
Install the horn to tail servo temporarily, adjust the horn position to make it perpendicular to the
linkage, then set the tail pitch to be approximately 8°in the direction that compensates the main rotor
torque by adjusting the linkage length.
Notice:
Don’t connect servos to the gyro until finishing the servo type configuration.
6. PC software installation and setup
Notice:
If you use ZYX-S2 for the first time, you must connect ZYX-S2 to PC software, and setup
your helicopter. If you don
’t do this, may put your servos and helicopter at risk!
Install the USB driver on your computer first. You must select the appropriate driver according to
your computer operating system.
