Surpass Hobby Rocket 4585 1580KV 4-Pole Brushless Motor

The Surpass Hobby Rocket 4585 1580KV is a heavy-duty, 4-pole sensorless brushless inrunner motor engineered for high-power, large-scale applications. Measuring 45x85 mm, this motor provides high torque output suitable for large custom fixed-wing aircraft, high-performance Electric Ducted Fan (EDF) jets, and large-scale (1/8 to 1/7) RC surface vehicles. The CNC-machined aluminium housing functions as an integrated heatsink, assisting with thermal management during extreme continuous loads.

Key features

• 4-pole, 12-slot sensorless inrunner architecture for consistent power delivery

• CNC-machined aluminium can with integrated cooling fins for thermal efficiency

• High-purity copper windings maximise conductivity and reduce internal resistance

• Precision-balanced rotor minimises vibration at high rotational speeds

• High-RPM rated oversized bearings for enhanced longevity under load

• Heavy-duty 5mm steel output shaft designed for high rotational torque

Specifications

• Model: Rocket 4585

• KV: 1580 KV

• Motor type: Sensorless brushless inrunner

• Dimensions: 45x85 mm

• Shaft diameter: 5 mm

• Shaft length: 18 mm

When selecting this motor, ensure your airframe or chassis mount supports the 45mm diameter casing. It requires a high-amperage Electronic Speed Controller (150A continuous or higher is recommended) to handle the significant current draw typical of a 45-class inrunner. Verify your motor mount hole spacing (M3/M4 pattern) and drivetrain clearance before assembly. Always check that your battery pack and ESC wiring are rated for the high-current demands of this motor system.