SunnySky V4010 High-Efficiency Brushless Motor — The Ideal Choice for UAV & Multirotor Applications

In the fast-evolving world of unmanned aerial vehicles (UAVs), drone components must offer not only power, but efficiency, reliability and weight savings. The SunnySky V4010 High-Efficiency Brushless Motor is designed precisely with those demands in mind. Whether you are building a professional multirotor inspection platform, an agricultural spray drone, or a fixed-wing unmanned aircraft, this motor offers an excellent balance of performance, efficiency and value.

Key Features and Specifications

• Motor model: V4010 / KV375
• Stator-rotor configuration: 18 N / 24 P (18 stator slots, 24 magnetic poles)
• Internal resistance (phase to phase): 100 mΩ
• Motor length: 26.5 mm
• Motor weight (wire included): 115 g
• No-load current: 0.5 A
• Maximum continuous power: 725 W
• Maximum continuous current (30s rating): 29 A
• Recommended ESC: 50 A
• Recommended propeller sizes: EOLO 12×5, 13×5, 15.5, or 16×6

These specifications make the V4010 series a high-efficiency brushless motor perfectly suited for drones requiring medium-to-high thrust with compact size and low weight.

Why This Motor Stands Out

Efficiency and High Power

At a 725 W continuous power rating, the V4010 offers a strong power envelope for many multirotor or fixed-wing UAV platforms. The low internal resistance (100 mΩ) reduces losses, improving efficiency and thermal stability - essential for long flights or heavy payloads.

Compact Size, Lightweight Design

Weighing only 115 g with a 26.5 mm length, the V4010 keeps UAV builds light and efficient. This improves maneuverability, battery life, and payload performance - crucial for inspection, mapping, and agricultural UAVs.

Versatile Propeller Compatibility

Supporting propellers up to 16×6, the motor allows broad flexibility for thrust tuning. Builders can optimize between thrust and endurance according to their mission profile.

Reliable Brand and Supply Chain

SunnySky is a trusted name in the brushless motor industry. Sold through UAVMODEL, it ensures genuine parts, reliable shipping, and excellent support for UAV builders worldwide.

Applications & Use-Cases

• Professional multirotor drones: Ideal for inspection, surveying, or cinematography applications needing high torque and steady hovering.
• Agricultural spraying drones: Excellent for 10-20 L payload drones requiring stable, efficient propulsion.
• Fixed-wing UAVs: Efficient operation when matched with suitable propellers and ESC configurations.
• RC multirotor and hobby builds: Perfect for advanced hobbyists upgrading to professional-grade motors.

Performance Tuning and Installation Tips

1. Use a high-quality 50 A ESC or higher for best results.
2. Select propellers in the recommended size range and balance them carefully.
3. Ensure proper ventilation for cooling during continuous operation.
4. Keep wire lengths short and solder joints strong to minimize power losses.
5. Match the battery voltage to your system’s current and power requirements.
6. Test motor temperature under load to prevent overheating.

Integration in UAV Design

For maximum performance, consider these factors when integrating the SunnySky V4010 into your