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Product Description

Contra Rotating Propeller Drive System for RC F3A Plane Pattern Competition
  • The motor shaft and the middle one are made of titanium alloy. 
  • The lightweight is better for F3A flight.
  • The plastic gear is strong enough which hardened on the surface.
  • We have tested it with this motor, it saves electricity.
  • And the gear material we use oily plastic, which is wear-resistant and quiet


Motor Prop  Performance Gear Ratio
1:4
Original Falcon F21X20 R21X20 Banery (mah> P19 2800-3500
F19 3500-4000
Speed Horizontal 85-90
Vertical 75
Current Draw (A) Static 75
Max Horizontal 63
Vertical 68
align 700MX Falcon F21X20 R21X20 Banery (mah> P19 2800-3500
F19 3500-4000
Speed Horizontal 85-90
Vertical 75
Current Draw (A) Static 75
Max Horizontal 63
Vertical 68
 
Selecting the Right Gear Ratio
All available gear ratios are listed in the following table:
Props Gearset Downline Braking Horizontal Speed Vertical Pulling Power
22x18 Rear, 22x18 Front 1:4 +++ + +++
22x20 Rear, 22x20 Front ++ ++ ++
22x22 Rear, 22x22 Front + +++ ++

Package include
  • 1 set Contra Rotating Propeller Drive System

About US
  • ZYHOBBY is a China Hobby Wholesale online shop, it focus on superior Radio control toys selling, such as helicopter, wooden airplane, car model, boat model and all kinds of model accessories. We are sincerely in face of customers with high quality products, satisfied price, on-time delivery date, and offer full-scale after-sale service. Your satisfaction is our greatest driving force. We continuously pursue excellent quality. Sincerely welcome every friend's guidance and support.

Shipping

  • Item(s) will be shipped within 1-2 business day after confirmed payment (weekend and holiday excluded).
Returns
  • We will accept the return of item(s) that was purchased from ZYHOBBY within 60 days of receipt of shipment.
    Customers must agree to the following in order to ship item(s) back to us:
    1) We accept return     item(s) within 60 days after you received the item.
    2) Please offer us tracking number if you returned item(s).
    3) Return shipping cost is responsible by buyer.
    4) The item(s) MUST be in unused condition AND in its original packaging (cannot be glued or tampered with in any fashion).

Feedback

  • We greatly appreciate your POSITIVE feedback.
  • Negative or Neutral feedback does not resolve any underlying issues. If you are not completely satisfied with the item(s) that you received, simply contact us, we will try our best to the resolve the issue and make your experience as simple and satisfying as possible.

Thank you for your purchase! 

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