Surpass Hobby 2040 Brushless Motor (3900KV) - Red & Black
Surpass Hobby 2040 Brushless Motor (3900KV) - Red & Black - Image 2
Surpass Hobby 2040 Brushless Motor (3900KV) - Red & Black - Image 3
SKU: DRFC-2460
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Surpass Hobby 2040 Brushless Motor (3900KV) - Red & Black

₹1,089.00 (Inclusive of all taxes)
Out of Stock

The Surpass Hobby 2040 is a compact 3900KV brushless motor featuring a waterproof design, engineered for high-RPM performance in small-scale FPV drones, CineWhoops, and micro RC applications.

Features

  • High-speed 3900KV brushless motor for rapid acceleration.
  • Waterproof construction protects against moisture and debris.
  • Compact 2040 stator size (20mm diameter, 40mm height).
  • Durable red and black housing for component protection.
  • Supports high-RPM operation up to 50,000 RPM.

Out of stock

Description

The Surpass Hobby 2040 brushless motor delivers high-RPM power in a compact, durable package. Its 3900KV rating provides exceptional throttle response and acceleration, making it suitable for lightweight, high-performance builds where quick spool-up is critical.

Engineered with a waterproof housing, the motor maintains reliable operation in damp or debris-filled environments. The robust construction ensures longevity, while the standard mounting pattern allows for easy integration into a wide range of micro and small-scale multirotor frames.

Key Features

  • High-KV Design: 3900KV rating optimized for direct-drive setups on 2S-3S LiPo batteries, delivering high rotational speed.
  • Waterproof Enclosure: Sealed housing protects internal windings and bearings from moisture, splash, and particulate ingress.
  • Durable Mechanical Build: Features a reinforced stator and shaft for reliable operation under high dynamic loads.
  • Efficient Cooling: Motor bell design promotes airflow for effective thermal management during sustained high-RPM use.
  • Standard Mounting: Compatible with common micro-drone and CineWhoop motor mounting patterns for straightforward installation.

Applications

  • High-speed 2-inch to 3-inch micro FPV and CineWhoop drones requiring aggressive throttle response.
  • Lightweight freestyle or racing builds where a high KV motor on 2S-3S provides the desired power-to-weight ratio.
  • Small-scale RC car or boat projects where a compact, waterproof brushless powerplant is needed.
  • DIY micro drone projects and experimental aircraft where a reliable, high-RPM motor is essential.

Technical Specifications

Motor ModelSurpass Hobby 2040
Motor TypeBrushless Outrunner
KV Rating3900 KV (RPM/V)
Stator Size20mm x 40mm
WaterproofYes
Max RPM50,000
ColorRed & Black
Shipping Weight0.075 kg
Shipping Dimensions10 x 6 x 4 cm

Frequently Asked Questions

What is the recommended battery voltage for this 3900KV motor?

This 3900KV motor is optimized for 2S to 3S LiPo battery packs (7.4V to 11.1V). Using a 2S pack provides high RPMs for lightweight builds, while a 3S pack delivers maximum power and speed. Exceeding 3S may risk overheating the motor windings.

Is this motor truly waterproof, and can it be submerged?

The motor features a waterproof-sealed housing designed to protect against splashes, light rain, and debris. It is not intended for prolonged submersion. For best results, avoid fully submerging the motor and ensure connectors remain dry.

What propeller size is compatible with the Surpass Hobby 2040 3900KV motor?

This motor is suited for small, lightweight propellers typically used on 2-inch to 3-inch micro drones. For 2S operation, 2-3 blade props in the 2-3 inch range are ideal. For 3S, use smaller, lower-pitch props to manage current draw and prevent overheating.

Package Includes

  • 1 x Surpass Hobby Waterproof 2040 Brushless Motor (3900KV) - Red & Black

Additional Information

Weight 0.075 kg
Dimensions 10 × 6 × 4 cm

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