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and the left aileron is raised and the left aileron 
is lowered and the helicopter banks to the right. 
When the aileron stick is moved to the left, the 
ailerons move in the opposite direction and the 
helicopter banks left. To level the helicopter, the 
aileron  stick  must  be  move  in  the  opposite 
direction and back to center. 
 

Elevator  Control  (CH2): 

When  the  elevator 

stick  is  pulled  back,  the  tail  elevator  is  raised 
and  the  tail  of  the  helicopter  is  forced  down, 
thus causing the model to climb (Up Operation), 
When the elevator stick is pushed forward, the 
elevator  is  lowered,  the  tail  of  the  model  is 
forced up, thus causing the model to descend 

(Down Operation). 
 

Throttle Control (CH3): 

When the throttle stick 

is  pulled  back,  the  engine  throttle  lever  arm 
moves to the slow (Low Speed) side. When the 
throttle  stick  is  pushed  forward,  the  throttle 
lever arm moves to the High (High Speed) side. 
 

Rudder Control (CH4): 

When the rudder stick 

is moved to the right, the rudder moves to the 
right and nose points to the right, thus causing 
the model to turn right. When the rudder stick is 
moved to the left, the rudder moves to the left

 

and the nose points to the left, thus causing the 
model to turn left. 

 

SERVO INSTRLLATION 

All servos should be mounted as shown in the 
model’s instructions. Use the rubber grommets, 
screws  and  brass  eyelets  supplied  when 
mounting 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  servo.  This  can  be  tested  by 
moving  the  transmitter  sticks  to  maximum 

positions  several  times  while  observing  the 
movement of the control services. If a servo is 
binding or sticks in flight, a greater current drain 
on  the  battery  is  applied,  thus  shortening  the 
flight time of the model. Binding can also cause 
damage to the servo and loose linkages could   
result in poor control of the model.   

 

Because  there  are  varieties  of  specific 
applications  for  servos  in  R/C  modeling, 
different  servos  are  designed  for  different 
applications. 

 

REVCEIVER INSTALLATION 

After  the  receiver  and  servos  are  mounted  in 
your model, connect the receiver to servos and 
switch harness per the diagram below. Always 
insert the servo and battery or switch harness 
connector  into  the  receiver  firmly,  to  ensure 
solid  physical  and  electrical  connections  are 
made.   
 
Turn on the transmitter, then the receiver switch 
harness.  Make  sure  all  servos  operate 

according  to  the  movement  of  the  transmitter 

sticks.  Center  all  trim  levers,  turn  off  the 
receiver  switch  harness,  then  the  transmitter 
and be careful not to move the servo arms from 

ELE.

AIL.

THR.

RUD.

Battery connector

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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