Engine HGLRC Specter 0802 21000KV

Order the HGLRC Specter 0802 21000KV motor - the high-speed heart of your micro-drone

To create the tiniest and most dynamic Whoop-class quadcopters, engine HGLRC Specter 0802 21000KV. This ultra-compact brushless motor is an engineering marvel. It is designed to deliver maximum performance in a small form factor. You'll get incredible throttle response and responsiveness from 1S batteries. This engine is a key component to winning indoor races. Your micro drone will become the fastest and most maneuverable.

Engine HGLRC Specter 0802 21000KV is the pinnacle of miniaturization in the world of brushless motors. Its ultra-high KV value (21000) indicates extreme rotation speed. The motor responds instantly to the slightest changes in traction. This allows you to perform sharp turns and difficult tricks in confined spaces. The incredibly small size and weight are critical to the balance of the micro-device. Your Whoop drone will gain unprecedented agility and controllability.

Five main advantages of the device

• Ultra-compact size 0802 (8x2mm). Minimum dimensions and weight for micro-drones. Ideal for the smallest Whoop frames.

• Extremely high KV value 21000. Provides maximum rotation speed on 1S power supply. Gives instant response and sharp acceleration.

• High quality precision assembly. Miniature bearings ensure smooth running. Precise balancing reduces vibration for stable flight.

• Efficient stator with copper winding. Optimized for operation with minimal energy loss. This improves overall efficiency and flight time.

• Durable design for intensive use. Built to withstand the stress of intense micro racing. Reliable operation even after many flights.

Operating principle and technical details

Brushless motor of such microscopic size works on the same fundamental principles. The interaction of the magnetic fields of the stator and rotor creates rotation. However, scaling to size HGLRC Specter 0802 is a challenge. The fixed stator, with a diameter of only 8mm, contains ultra-thin copper windings. The spinning rotor is equipped with tiny but strong neodymium magnets.

The ESC regulator (usually built into the AIO board) supplies three-phase current. This creates a rotating magnetic field in the stator. The field interacts with the magnets, causing the rotor to spin at breakneck speed. The KV parameter (21,000 rpm per volt) reaches extreme values ​​here. On a fully charged 1S battery (4.2V), the motor can spin up to 88,000 rpm.

Specific functionality and technical characteristics:

• Standard size: 0802 (stator diameter 8mm, height 2mm).

• Construction: External rotor (Outrunner) for compactness.

• KV parameter: 21,000 revolutions per minute per volt (RPM/V).

• Recommended voltage: 1S LiPo (3.7V nominal, 4.2V maximum).

• Shaft type: Ultra-small diameter, usually 1.0mm or 1.5mm.

• Weight: Extremely small, only a few grams.

• Recommended Propeller: Propellers 31-40mm for Whoop drones (65mm, 75mm).

• ESC requirements: Throttle controller for micro drones, capable of high KV operation.

• Purpose: Tiny Whoop class micro quadcopters, indoor racing.

This engine is the choice of pilots interested in the world of micro drones and indoor racing. It's ideal for building or upgrading a racing Whoop for competition. 

Specifications

• 8.31 mm / 41 mm inches
• SPECTER 0802 brushless motor with a power of 21000 kW
• Motor: 21000 kV
• Slot pole: 9N12P
• Maximum constant current: 12A (5s)
• Maximum power: 88 W
• Input voltage: 3.7V (1C)
• ESC:>5A
• Recommended propeller diameter: 31mm/41mm
• Motor size: Φ11.22mx 8.2mm
• Mounting hole: 3*M1.4-≈6.6mm
• Weight: 2g ±0.1g (including wire).