SunnySky X Series V3 X4125 V3 Brushless Motor 420KV
by SunnySky

SunnySky X Series V3 X4125 420KV: Maximized Efficiency for Large Propellers

The SunnySky X Series V3 X4125 420KV Brushless Motor is the cornerstone of a high-efficiency power system for large RC fixed-wing airplanes and heavy-lift models. As a low-KV option in the premium X Series V3 lineup, this motor excels at turning massive props to generate high static thrust at lower RPMs, which translates directly into extended flight times and superb stability.

Engineered for Endurance and High Power:

• Low KV, High Torque: The 420KV rating is optimally suited for 6S LiPo batteries, efficiently spinning large 15-inch and 16-inch propellers (e.g., EOLO 15x8, 15x10, 16x8, 16x10). This setup is crucial for models requiring excellent takeoff thrust and reduced cruise current draw.

• Premium Build Quality: Constructed with a robust casing and featuring a large 41mm Stator Diameter and 25mm Stator Thickness, the X4125 V3 is built for durability and superior thermal management.

• Peak Performance Metrics: The motor is rated for a low No-load Current of 1.4A/10V, emphasizing its efficiency, while still handling a maximum continuous current of 90A (30s) and delivering a peak continuous power of 2250W.

• Reliable Operation: The internal 12-slot, 14-pole design provides smooth, predictable operation, which is essential for precise throttle control in high-end electric flight systems.

Choose the SunnySky X4125 V3 420KV for the ultimate combination of thrust, stability, and endurance in your next large-scale electric airplane project.

Specifications

• Motor KV: 420

• Stator Diameter: 41mm

• Stator Thickness: 25mm

• Rotor Diameter: 49.7mm

• Body Length: 54mm

• No. of Stator Slots: 12

• No. of Rotor Poles: 14

• Max Lipo Cell: 6S

• Recommended ESC: 80-100A

• No-load current: 1.4A/10V

• Motor Resistance: 20.5mΩ

• Max Continuous Current: 90A / 30 seconds

• Max Continuous Power: 2250W

• Weight: 351g

• Recommended Prop (inch) on 6S: EOLO 15x8, 15x10, 16x8, 16x10 (as per manufacturer data