| Introduction to DC Brushless Motors
    Summary of the DC brushless motor 
    This product adopts the new generation frame design of no slots 
    which boasts the advantages of good timing ability, high 
    reliability, no maintenance, no exchanging direction sparkle and 
    so on. Furthermore, it dispels the domino effects of alveolus 
    and it has little vibration of torque, clam operation, low 
    noise, small armature inductance and orientation interfere 
    moment etc. Here are the advantages:  
    1.The shell of the motor adopts high technology aviation 
    aluminum material; light weight, good ability of giving out heat 
    at the same mechanism intensity.  
    2.Adopting frame design, no alveolus effects, high efficiency, 
    little volume.  
    3.The permanent magnet adopts high capability neodymium iron 
    boron, so it minishes the volume and weight greatly at the same 
    output power.  
    4.The stator adopts import silicon steel, good pulling on 
    magnetism, high efficiency, so it lasts the aviation time. 
     
    5.It adopts import high speed bearing at forward and backward 
    respectively; low noise; long life time.
     
          
    NOTE: Use only when the special 
    controller (electronic throttle) suits to the brushless motor.
     
    Introduction of installing the DC motor electric for use in 
    model     
    The 
    circuit connecting of brushless motor: three lines of (u.. v. w 
    ) can connect with the controller freely, not suit to the color 
    necessary. The motor will reverse by changing two of the three 
    lines (u. v. w ). 
 
    Walkera technology CO., Ltd Series of brushless motor 
    products for use in model 
 
     
      | Product name | Product code No | Working voltage | Speed constant (KV) | Hollow holding current(10A) | Impend-dance | Dimension | Diameter of axes | Length of axes | Installation bore depth | Weight |  
      | V | RPM/V | A | m | mm | mm | mm | mm | g |  
      | 180L | WK-WS-20-001 | 6-18 | 3200 | < = 1 | 87 | ø20X40 | ø2.0 | 13.5 | 3.5 | 65 |  
      | 380L | WK-WS-28-003 | 6-18 | 3000 | < = 1.5 | 75 | ø28X37.5 | ø3.17 | 13.5 | 3.5 | 96 |  
      | 380L | WK-WS-28-001 | 6-18 | 3100 | < = 2 | 30 | ø28X47.5 | ø2.3 | 13.5 | 3.5 | 130 |  
      | WK-WS-28-002 | 6-18 | 3100 | < = 2 | 30 | ø28X47.5 | ø3.17 | 13.5 | 3.5 | 130 |  
      | 380L | WK-WS-28-004 | 6-18 | 2500 | < = 2 | 31 | ø28X52.5 | ø3.17 | 13.5 | 3.5 | 142 |  
      | 540L | WK-WS-36-001 | 6-18 | 1400 | < = 2 | 35 | ø36X58.5 | ø5.0 | 22 | 6 | 250 |  
 
 Please 
    note the installation bore depth when you install the motor and 
    the fixed screw must not be longer than the depth of the bore, 
    or it will damage the loop of the motor and make it short 
    circuit and damage other components. |