Predator Gasser NX
Page 52
The next section covers setting the pushrods and servos that will control the helicopter. It is important at this time that you review the instructions
provided with your radio that control the ccpm mixing for the 3 cyclic servos. Reviewing the radio instructions will assist you in becoming familiar with
the functions that affect the individual servos and affect the interaction of the three servos working together to control the swashplate.
Radio Setup Procedure
1. It is best to choose a new model memory (if available) and use the Reset feature to remove any previous settings or mixes, remember this usually
also returns the radio configuration to single servo.
2. Locate and activate the swashplate mixing for 120
0
ccpm (most manufacturers set single servo by default).
3. Return both the aileron and elevator subtrims to neutral along with any hover pitch knobs to neutral.
4. Adjust the servo reversing switch to make sure the servos are moving in the correct direction, together as the collective stick is raised. If the servo
reversing does not correct the movement of a servo, there is always a travel adjustment function inside the swashplate mixing menu. Change the
default setting to be opposite, for example, if set to +60 then change to -60 and change any servos that are affected.
5. After each servo horn is mounted, it is critical that the horn be 90
0
degrees to the respective pushrod.
CCPM Radio Review and Setup
The goal in the end after all the servos are mounted is to have the swashplate sit level or at 90
0
degrees to the main shaft and have the swashplate
move equally fore, aft and side to side. The swashplate will also travel up and down as the three servos work together. This will result when the radio
setup procedure has been followed and the servo centering for the 3 CCPM servos set very, very accurately to eliminate pitch change when moving
the aileron or elevator sticks.
CCPM SETUP