Troubleshooting; Replacing The Blades; Fine Tuning Of Yaw Control - Merlin Tracer 180 Instruction Manual

Helpful Information

Troubleshooting

Problem
Unit does not operate
Main motor does not turn
Helicopter spins uncontrollably
Helicopter will not hover still when sticks
are neutral
Vibration

Replacing the Blades

Your Tracer helicopter is supplied with a spare set of replacement blades in the event of crash damage. Should you need to replace the blades
please follow these simple steps :-
1. The blades are fastened with a screw and can be removed very easily
2. Loosen the screw on the damaged blade and remove it allowing the blade to come off
3. Insert the new blade into the gap and replace the screw tightening only sufficient to make sure the blade still moves freely.

Fine Tuning of YAW Control

The YAW controls are pre set from the factory and test flown and should not need adjustment. However for tuning by experienced pilots or in the
event of a serious crash and the need to re-build your helicopter their adjustment and function is as follows :-
Gyro gain - the gyro detects rotary movement and will stabilise the tail automatically in flight. The Gyro gain dial adjusts the sensitivity from
0 - 100%, the best setting is around 90% as pre-set. When the setting is too high the tail will be seen to wag from side to side, making it unstable.
Adjust the dial to compensate. Clockwise will reduce the amount of gyro gain.
Throttle mixer - the throttle mixer is the balance between the two motors on the helicopter. When the throttle is applied the mixer directs power to
the second set of blades to compensate for the torque of the other motor and blades. When this is in equilibrium and throttle is applied the
helicopter will gain height without spinning left or right. Clockwise will make the helicopter rotate to the right. The Throttle Mixer for the Tracer 240
also functions the same way. However it is the balance between the main motor and tail motor instead of the two main motors of the Tracer 180.
Cause
Transmitter "AA" batteries are depleted or
installed incorrectly, indicated by a dim or
unlit LED on transmitter or the low battery
alarm.
No electrical connection.
4-in-1 unit not operating correctly
Gyro gain is incorrectly setup
Trimming incorrect or swash plate is not
level
Bent main shaft
Blades are broken
8
Solution
Check polarity installation or replace with
fresh "AA" batteries.
Push connectors together until they "click."
Consult your retailer
Adjust Gyro gain to 90%
Adjust trim levers or adjust Swash plate
Replace main shaft
Replace blades