Emax ECOII 3115 900KV 10inch Frame Brushless FPV Motor (Set of 4)
Emax ECOII 3115 900KV 10inch Frame Brushless FPV Motor (Set of 4) - Image 2
Emax ECOII 3115 900KV 10inch Frame Brushless FPV Motor (Set of 4) - Image 3
Emax ECOII 3115 900KV 10inch Frame Brushless FPV Motor (Set of 4) - Image 4

Emax ECOII 3115 900KV 10inch Frame Brushless FPV Motor (Set of 4)

₹15,000.00

Summary

If you’re building a 6S-powered long-range or cinematic drone and need a reliable 900KV motor, the Emax ECOII 3115 900KV stands out for its mix of power, efficiency, and affordability. It offers stable flight performance and excellent thermal management—ideal for both hobbyists and professionals pushing heavier setups

EMAX ECOII 3115 900KV Brushless Motor — The Ultimate Choice for Long-Range 10-Inch FPV Drones

When it comes to high-performance long-range FPV drones, every gram, every watt, and every revolution counts. At the heart of such drones lies the motor—an uncompromising component that dictates efficiency, thrust, flight time, and responsiveness. The EMAX ECOII 3115 900KV brushless motor is a purpose-built powerhouse engineered to deliver superior torque, cooler operations, and extended endurance for 10-inch propeller platforms on 6S LiPo or Li-ion setups.

 

Emax ECO II 3115 Optimized for 5–6S power setups and 9–10″ propellers


Emax ECO II 3115 Overview Overview

The Emax ECOII 3115 900KV is designed for high-thrust applications where a balance between agility and payload capacity is required. It’s best suited for long-range FPV drones or cinematic rigs that run on 5S to 6S LiPo setups.

 Key Specifications

Parameter Value
KV Rating 900 KV
Voltage Range 5–6 S LiPo
Max Current ~85 A
Internal Resistance ~0.042 Ω
Recommended Prop 9–10 inch
Motor Mount 19 × 19 mm pattern
Shaft Diameter 4 mm
Weight ~106–110 g (with wires)

The ECOII 3115 900KV motor is optimized to handle the load of 10-inch propellers with high torque at lower RPMs. This enables:

  • Improved low-end throttle control for smooth cinematic flights

  • Maximized efficiency for long-range and endurance builds

  • Better thermal stability under continuous high-load usage

  • Lower current draw compared to 1200KV+ motors at equivalent thrust

Performance Metrics

Below are indicative figures using a 10×4.5 inch bi-blade propeller on 6S 4200mAh Li-ion:

Throttle % Current (A) Thrust (g) Power (W) Efficiency (g/W)
25% 2.1 A 230 g 46.2 W 4.98
50% 4.6 A 560 g 101.2 W 5.53
75% 8.2 A 870 g 180.4 W 4.82
100% 13.5 A 1220 g 297 W 4.10

 Built for Durability

  • Thicker bell design resists bending during crash landings

  • CNC precision-machined aluminum alloy ensures structural integrity

  • NSK bearings offer smoother rotation and longevity

  • High-temperature-resistant magnets ensure consistent performance during extended flights

  • Multi-strand single wrap winding enables cooler operation under load

Emax ECO II 3115 OverviewNotable Features

  • Premium N52SH Arc Magnets: Delivers high torque and RPM stability even under load

  • CNC-Machined Bell with Reinforcement Ribs: Increases crash durability

  • NSK Bearings: Ensures low-friction, smooth, and quiet operation

  • High Temperature Copper Windings: Improves efficiency and longevity under high load

  • Top-tier performance for 7–10 inch FPV drones

 Ideal Use Case

  • 7–10 inch long-range quads

  • Cinematic drones carrying GoPros or similar payloads

  • Heavy freestyle or endurance builds

setups.

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