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HappyModel EX1202.5 KV6400 Brushless Motor (CW)

₹989.00 (Inclusive of all taxes)
Out of Stock

The HappyModel EX1202.5 KV6400 brushless motor is a high-KV, lightweight motor engineered for 2-3S LiPo micro and ducted FPV drones, delivering a dynamic power-to-weight ratio for responsive racing and freestyle flight.

Features

  • High KV 6400 RPM/V for aggressive throttle response on 2-3S LiPo power.
  • Ultra-lightweight 4.4g design minimizes overall quadcopter mass.
  • 12mm stator diameter (1202.5) with a 9N12P magnetic configuration for smooth, efficient power.
  • Features a 2mm inner shaft diameter with a 1.5mm output shaft.
  • Original equipment motor for popular micro frames like the Crux3.

Out of stock

Description

The EX1202.5 motor from HappyModel utilizes a compact 12mm stator with a 2.5mm length to generate significant thrust within a minimal footprint. Its 9N12P (9 stator slots, 12 magnet poles) configuration enhances torque smoothness and electrical efficiency, which is critical for the high-RPM demands of micro drone racing.

Constructed with a durable bell and precision-balanced components, this motor is built to withstand the vibrations and impacts typical of aggressive FPV flight. The optimized magnetic circuit and low-resistance windings ensure that power delivery remains consistent even under high thermal loads during extended flight sessions.

Key Features

  • High-Performance Stator: 1202.5 stator size provides an optimal balance of torque and RPM for micro-class drones.
  • Precision Magnetic System: 9N12P configuration reduces cogging torque for buttery-smooth throttle control across the entire range.
  • Lightweight Durable Construction: Machined aluminum alloy housing and a steel shaft ensure reliability without adding unnecessary weight.
  • Optimized Thermal Design: Efficient winding and airflow keep operating temperatures manageable during intense use.
  • Direct-Drive Compatibility: The 1.5mm output shaft is designed for direct mounting of micro propellers without adapters.

Applications

  • 1S to 3S-powered micro FPV racing drones (e.g., HappyModel Crux3).
  • 75mm to 95mm ducted CineWhoop builds for indoor and proximity flying.
  • Ultra-lightweight freestyle and acro micro quadcopters.
  • DIY micro drone projects requiring high thrust-to-weight ratios.
  • Replacement motor for factory-built micro drones using 1202.5 size motors.

Technical Specifications

Motor TypeBrushless Outrunner
Model NumberEX1202.5
Motor KV6400 RPM/V
Configuration9N12P
Stator Size12mm x 2.5mm (1202.5)
Inner Shaft Diameter2mm
Output Shaft Diameter1.5mm
Weight4.4g
Supported Voltage2-3S LiPo (7.4V - 11.1V)
Mounting PatternMicro whoop-style (M1.4 or press-fit)

Frequently Asked Questions

What is the compatible voltage range for the HappyModel EX1202.5 KV6400 motor?

The EX1202.5 motor is rated for 2-3S LiPo batteries, which corresponds to a voltage range of approximately 7.4V to 11.1V. Operating within this range ensures optimal performance and prevents damage from over-voltage. Exceeding 3S (12.6V) is not recommended.

What size propellers does this motor use, and what is the shaft diameter?

This motor is designed for micro propellers, typically in the 31mm to 40mm diameter range, used on 75mm-95mm whoop frames. It features a 1.5mm output shaft diameter, which is the standard for direct-mount micro props without the need for adapters or collets.

Is this motor a direct replacement for the HappyModel Crux3?

Yes, the EX1202.5 KV6400 is the original equipment motor specified for the HappyModel Crux3 micro drone. It uses the same mounting pattern, shaft size, and electrical characteristics, making it a perfect drop-in replacement for repairing or upgrading that specific model.

Package Includes

  • 1 x HappyModel EX1202.5 KV6400 Brushless Motor (CW)

Additional Information

Weight 0.15 kg
Dimensions 12 × 8 × 2 cm