SunnySky X3520 III 780KV Motor

Manufacturer: Sunnysky. Category: Drones & Quadcopters — Motors. This SunnySky X3520 III brushless motor with a KV of 780 is designed for those seeking a powerful, reliable, and efficient propulsion system for medium to large multi-copters and professional projects. The model features high specific power, stable operation across its working voltage range, and excellent thrust with recommended propellers.

Specifications

• KV: 780 RPM/Volt;
• Operating voltage: 11.1-14.8V (3-4S Li-Po);
• Maximum continuous current load: 83A (up to 30 sec);
• Maximum continuous power: 1395 W;
• Maximum thrust: 4350 g;
• Recommended propeller: 1260 / 1280 / 1365 / 1380 / 1470;
• Output shaft diameter: 5 mm;
• Output shaft length: 11 mm;
• Wire length: 110 mm;
• Mounting hole spacing: 25x25 mm (M3);
• Housing height: 42.5 mm;
• Housing diameter: 42.5 mm;
• Connector: 3.5 mm (polymax);
• Weight: 219 g.

Thanks to the combination of KV 780 and recommended propellers, this model is ideal for designs requiring high lift and stability under load. The 3-4S Li-Po operating range allows the motor to be used in lighter 3S configurations for greater efficiency, as well as on 4S for maximum thrust. The maximum continuous power of 1395 W and peak current up to 83 A (short-term) enable the motor to be used in demanding conditions and during intensive maneuvers.

Features and Installation

• Convenient mounting with 25x25 mm (M3) hole spacing is compatible with most frames for medium quadcopters;
• The 5 mm diameter and 11 mm length output shaft ensures reliable propeller and adapter attachment;
• 110 mm long wires facilitate connection to ESCs without additional extension;
• 3.5 mm (polymax) connector for reliable power connection;
• Weight 219 g — optimal balance between strength and weight for medium-class designs.

Package Contents

• SunnySky X3520-780kv V3 Brushless Motor × 1 pc;
• Collet adapter with M6 thread × 1 pc;
• Motor mount × 1 pc;
• Mounting hardware × 1 pc;

The SunnySky X3520 III 780KV is a reliable choice for enthusiasts and professionals. It is suitable for creating stable and powerful multi-copters where lift and efficiency are important. Before installation, we recommend using an ESC that can handle the recommended current and selecting propellers based on the recommended sizes (1260, 1280, 1365, 1380, 1470) to achieve optimal thrust and efficiency.

Other technical questions and assistance with component selection can be obtained from the manufacturer or specialized services. This motor can be combined with various ESCs and flight control systems to achieve the necessary characteristics for your project.

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