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 aluminium 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. 

Actiyator of brushless motor, Use for both aeroplane and helicopter of electromotion. 
Backspin: adjust the line of brushless motor to reach positive and negative turn. 
There is protecting program to stop run when the voltage is too low. 
Automatism stop to avoid injury the people when the remote control signal can be found and it will work once the signal can be found again. 
High performance brushless motor 
(it needs match the timing of brushless motor ) 
Using import Selenium(Se) steel , high flux and magnetism make efficiency. 
It can save a lot of electric-power with the front and backball bearing. 
It is the ideal parts of electromotion aeroplane and helicopter's. 



Product Details 
Brushes Motor 180L 
WK-WS-20-001 
Length : 20 mm 
Diameter : 40 mm 
Axes length : 13.5 mm 
Axes diameter : 2.0 mm 
Installation bore depth : 3.5mm 
Item Size (mm) : 168 L. x 72 W. x 54 H. 
Weight : 70 g 
Impend-dance : 87 
Hollow holding current (10V) : < 1A 
Speed constant : 3200 rpm/v 
Working voltage : 6-18v 
Shaft Diameter : 2.3mm 
For use the helicopter: WALKERA No. 22a, 22e, 22d, 35, 36 helicopter......etc 
 

Our warranty/ return / exchange policy is very simple. If the item we sent you is defective when you received the shipment from us (NOT AFTER USE), you can report to us by email for return / exchange / refund arrangement.

Request(s) for return or exchange and report(s) of missing or damaged part(s) must be received within 30 days of your receipt of merchandise(s). We reserves the rights to entertain requests received thereafter.

Items returned must be in as-new conditions with the packing slips, manuals, accessories and all other items intact in original packaging. Returned merchandise must be received from our customer before we will process and ship out any replacement. All merchandise should be returned to us by shipping carriers with safe method which provides proof of shipment (just in case your item does not reach us. so you can check with your local shipping carrier.) We will not responsible for the lost of returned merchandise in shipping.

Shipping and handling charges for all orders are non-refundable, as we have paid the Post Office to send the shipment and the Post Office will NOT refund the postage cost back to us after they processed the shipment. Customer will be responsible for the return shipping cost to send return back to us. For returned merchandise that is found to be genuinely defective, we ship out replacement for free (we pay for the replacement shipping cost) and will not charge additional shipping and handling fees.

We reserves the right to return merchandise to its customer and not refund money, if we in our opinion deem that the merchandise has been used, crashed, abused, misused or modified in any form, or has been damaged by water, dust, or other contaminants.

*** All items are tested by manufactures to make sure they are working properly before we ship them to our customers.

*** Please inspect the product when you received the shipment, identified any issue and report to us BEFORE you try to fly / use it. Please also check over the product (especially the helicopters and air planes) and make sure they are all good every time before use (or taking to the air).

*** Return / exchange / refund is not allowed if the item has been used or flew. Please understand that RC helicopters and airplanes can crash if mistake made or you do not know how to fly, any kind of crash or hard landing may caused damage(s) to the helicopter or plane. We have no control over your flying skill, behavior or the conditions you have chosen to fly in. We tested all products before shipment as we stated above, if you have any problem with the aircraft or other product(s) you ordered from us, please report it at the time when you received the shipment (not after use please).

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