User Manual

Problem Possible Cause Solution

Helicopter will not lift off

Main rotor head is not spinning in the correct

direction

Make sure the main rotor head is spinning clockwise.

Refer to the motor control test

Transmitter settings are not correct

Check throttle and pitch curve settings and pitch control

direction

Flight battery has low voltage Fully charge the ﬂ ight battery

Main rotor blades are installed backwards

Install the main rotor blades with the thicker side as the

leading edge

The helicopter tail spins out

of control

Rudder control and/or sensor direction

reversed

Make sure the rudder control and the rudder sensor are

operating in the correct direction

Tail servo is damaged

Check the rudder servo for damage and replace if

necessary

Inadequate control arm throw

Check the rudder control arm for adequate travel and

adjust if necessary

Tail belt is too loose Make sure the tail drive belt tension is adjusted correctly

The helicopter wobbles

in ﬂ ight

Cyclic gain is too high Decrease Dial 1 on the AR7210BX

Headspeed is too low

Increase the helicopter's head speed via your transmit-

ter settings and/or using a freshly charged ﬂ ight pack

Dampers are worn Replace the main rotor head dampers