SKU: DRFC-2940
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QPT 3115 KV900 Brushless Motor

₹3,879.00 (Inclusive of all taxes)
Out of Stock

The QPT 3115 KV900 Brushless Motor is engineered for high-torque, heavy-lift multirotor and RC applications, delivering up to 4250g of thrust and 1700W of power from a 3-6S LiPo power source.

Features

  • 900KV rating optimized for high torque and efficient 3-6S LiPo operation.
  • Delivers a maximum thrust of 4250g and handles peak currents up to 72A.
  • Features a durable 18.58mm shaft and a compact 37.3×48.8mm housing.
  • Low no-load current (0.67A) and optimized internal resistance (54mΩ) for improved efficiency.
  • Includes a 23cm power cable and a fitting accessory set for simplified installation.

Out of stock

Description

The QPT 3115 KV900 Brushless Motor is a high-performance powerplant designed for demanding aerial platforms requiring substantial lift capacity and smooth operational characteristics. Its 900KV winding provides an ideal balance of rotational speed and torque, making it suitable for larger multirotor frames, heavy-lift drones, and advanced RC systems operating on 3S to 6S LiPo batteries.

Constructed with precision components, the motor maintains stable output under high loads, with an internal resistance of 54mΩ contributing to its thermal efficiency. The robust shaft and housing are engineered for durability in rigorous flight environments, ensuring reliable performance and extended service life.

Key Features

  • High-torque 900KV stator winding for powerful, responsive thrust.
  • Robust construction with a 18.58mm diameter shaft for reliable power transfer.
  • Optimized electromagnetic design for smooth operation and minimal cogging.
  • High-efficiency neodymium magnets and low-loss laminations reduce thermal buildup.
  • Precision-balanced rotor for minimal vibration, enhancing flight stability and component longevity.
  • 23cm silicone-insulated power leads with high-temperature tolerance.
  • Compact 37.3mm diameter form factor for flexible integration into various frame designs.

Applications

  • Heavy-lift multirotor drones for aerial photography and payload delivery.
  • Large-scale FPV and RC aircraft requiring high torque and smooth power delivery.
  • Industrial inspection and surveying drones operating on 4S-6S LiPo systems.
  • Custom-built aerial platforms where a balance of speed and lifting force is critical.

Technical Specifications

KV Rating900 KV
Internal Resistance54 ± 3 mΩ
No Load Current0.67 A
Max Continuous Current72 A
Max Thrust4250 g
Max Power1700 W
Shaft Diameter18.58 mm
Shaft Length4.90 mm
Cable Length23 cm
Motor Diameter37.3 mm
Motor Length48.8 mm
Motor Weight107.5 g

Frequently Asked Questions

What is the recommended battery voltage (cell count) for the QPT 3115 KV900 motor?

The QPT 3115 KV900 motor is optimally designed for 3S to 6S LiPo battery systems (approximately 11.1V to 22.2V). Its 900KV rating provides high torque at moderate RPMs, making it ideal for heavy-lift applications where efficient power delivery from these voltage ranges is required. Always pair it with a suitably rated ESC.

What is the mounting hole pattern for this motor?

While the exact bolt pattern is not specified in the provided data, motors in the 3115 size class typically use a 16x19mm or 25x25mm mounting pattern. You must verify the hole spacing from the included accessory kit or by measuring the motor base before ordering a compatible frame or adapter.

Is this motor suitable for high-speed FPV racing drones?

No, the QPT 3115 KV900 is not designed for high-speed FPV racing. Its 900KV rating and physical size are optimized for high-torque, lower-RPM applications such as heavy-lift drones, large aerial photography platforms, or scale RC aircraft. For racing, a smaller, higher-KV motor (e.g., 2207 1950KV) would be more appropriate.

What propeller size is recommended for this 3115 900KV motor?

For a 3115 900KV motor on a 4S-6S system, typical propeller sizes range from 13x4 to 15x5.5 inches for multirotors, or larger slow-fly props for fixed-wing applications. Always test with a current sensor to ensure you do not exceed the motor's 72A maximum continuous current rating during static thrust tests.

Package Includes

  • 1 x QPT 3115 KV900 Brushless Motor
  • 1 x Fitting Accessory Set

Additional Information

Weight 0.121 kg
Dimensions 5.5 × 5.5 × 4 cm