Alex 3110 900KV Brushless Motor

The Alex 3110 900KV is a 6S brushless outrunner for 9–10 inch long-range FPV quads and UAV multirotors on carbon-fibre props. Made in India, it pairs a 31 × 10 mm stator with N52H magnets and weighs 88 g.

Key features

• Up to 1425 W at a 57 A maximum current on 6S
• Maker-recommended setup: 6S 65 A ESC with 9–10 inch carbon-fibre props
• Rotor dynamically balanced to 5 mg or better for low vibration
• Passes a 500 V AC hipot test and an impulse winding test
• 18 AWG motor leads, 250 mm long

Specifications

• Stator: 3110 (31 × 10 mm)
• KV: 900KV
• Input voltage: 6S LiPo
• Max power: 1425 W
• Max current: 57 A
• Idle current (10 V): 1.2 A
• Internal resistance: 85 mΩ
• Magnets: N52H
• Dynamic balance: ≤5 mg
• Recommended ESC: 6S, 65 A
• Recommended props: 9–10 inch carbon fibre
• Leads: 18 AWG, 250 mm
• Motor dimensions: 32 × 40.3 mm
• Weight: 88 g

Sold as a single motor, so order one per arm. Keep the 65 A ESC headroom over the 57 A maximum if you move to a higher-pitch 10-inch prop, which raises current draw.