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operates  in  the  wrong  direction,  switch  its 
SERVO  REVERSER  switch  (The  direction  of 
operation can be changed without changing the 
linkage).   
 
Note  that  the  direction  of  the  aileron  servo  is 
easily mistaken. 

 

2.  Neutral  Adjustment:  Check  the  aileron, 
elevator  and  rudder  neutral  adjustment  and 
left-right (up-down) throw. 
 
Check  that  when  trimmed  to  the  center,  the 
servo  horn  is  perpendicular  to  the  servo  and 
check  the  neutral  position  of  the  fuselage 
control surfaces (aileron, elevator, rudder, etc.). 
If the neutral position has changed, reset it by 
adjusting the length of the rod with the linkage 
rod adjuster. 

 

When  the  throw  is  unsuitable  (different  from 
steering  angle  specified  by  the  kit  instruction 
manual),  adjust  it  by  changing  the  servo  horn 
and each control surface horn rod.   
 
3. Check the engine throttle (speed adjustment) 
linkage. 
 
Change the servo horn installation position and 
hole position so that the throttle is opened fully 
when the throttle stick is set to HIGH (forward) 
and  is  closed  fully  when  the  throttle  stick  and 
throttle  stick  and  throttle  trim  are  set  for 
maximum  slow  (backward  position  and  lower 
position, respectively). 
 
4. After all the linkages have been connected, 
recheck the operating direction throw, etc. 
 
Before  flight,  adjust  the  model  in  accordance 
with the kit and engine instruction manuals. 
 
5. Fly the model and trim each servo.   

 

USING OTHER FUNCTIONS 

LEVER SPRING TENSION ADJUSTMENT 

The stick spring strength can be adjusted. 
The operation feel of the throttle sticks can be 
individually adjusted. 

 

1.  Remove  the  four  transmitter  rear  case 
screws and remove the rear case. 
 
2.  Adjust  the  spring  strength  by  turning  the 
screw of the channel you want to adjust. 
 
3.  Close  the  rear  case  and  tighten  the  four 
screws. 

Summary of Contents for AT401

Page 1: ...2 4GHz 4 Channel Radio Remote Control Transmitter Models AT401 AT402 AT501 AT601 INSTRUCTION MANUAL Digital Proportional Radio Control System Taizhou Best Team Technology Limited www rcmodel net ...

Page 2: ...turn Off the transmitter power switch Failure to follow this order could cause the engine to go to full throttle and cause an injury Do not make adjustments to the radio system while the engine is running unless absolutely necessary Failure to do so could cause the engine to accidentally go to high speed and cause an injury The transmitter is designed for use with 8 dry cell Non rechargeable AA si...

Page 3: ...evator CH2 NOR Normal THR throttle CH3 RUD Rudder CH4 Power switch in the upper position the power is turned on LED Power on Hook Aileron trim lever Rudder trim lever Throttle model 1 Elevator model 2 Aileron stick Elevator model 1 Throttle model 2 rudder stick Carrying bar 2 4G Antenna Throttle trim lever model 1 Elevator trim lever model 2 Elevator trim lever model 1 Throttle trim lever model 2 ...

Page 4: ...nting your servos Do not over tighten the mounding screws The servos should be able to move slightly to compensate for engine vibration For each servo use a servo horn long enough to accommodate the entire range of movement for that particular control When mounting the servos make sure the pushrods are not too loose or bind in anyway Pushrods should be capable of operating the full range of the se...

Page 5: ... Press and hold the Binding Switch on the receiver for approximately 5 seconds until the Binding Indicator LED on the receiver goes solid green indicating the binding finished RANG BATTERY TEST It is very important to check the transmitter will operate the model satisfactorily at maximum range 1 In order to do this place the model on the ground and walk away from it whilst operation the swashplate...

Page 6: ...ce horn rod 3 Check the engine throttle speed adjustment linkage Change the servo horn installation position and hole position so that the throttle is opened fully when the throttle stick is set to HIGH forward and is closed fully when the throttle stick and throttle stick and throttle trim are set for maximum slow backward position and lower position respectively 4 After all the linkages have bee...

Page 7: ...direction of the aircraft Reverse REV With the servo reversing function this is used to mean the reverse side The opposite side is the normal side Rod A bar that connects the servos and the fuselage control surfaces Servo Horn A part that is installed to the shaft of a servo and changes the rotating motion of the servo to linear motion and transmits the linear motion to a rod Servo horns come in v...

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