The Ultralight Antigravity 4006 KV390 Brushless Motor is a high-performance, lightweight motor designed for multi-rotor UAVs. It features an ultrathin design, efficient cooling, and durable hand-wound copper wire for exceptional power delivery and reliability.
Products Characteristics
- Ultrathin Design: This motor features an ultrathin design, making it the lightest in its class.
- Hand-Wound Thick Copper Wire: It uses a single, thick copper wire hand-wound for enhanced performance and durability.
- Unique Ventilation and Cooling Design: Specially designed for effective cooling and ventilation, improving motor efficiency.
- Excellent Assembly Craftsmanship: High-quality assembly ensures perfect rotor dynamic balance.
- Compatible with YHR Carbon Fiber Props with M6hole: Work with YHR carbon fiber prop and the prop with M6 hole, equipped with high-quality imported bearings for superior performance.
Application
This brushless motor for Multi-Rotor UAVs delivers exceptional performance and reliability, making it ideal for a wide range of drone applications such as aerial photography, surveying, and mapping. With a maximum payload capacity of 2100g and a Max Continuous Current/Power (A/W @ 24V) of 21A / 504W, this motor is designed for powering medium to large drones that require high efficiency, stable flight, and reliable power delivery for demanding tasks.
Products Characteristics Description
Ultrathin Design: Made with high-strength aluminum. Lightweight and durable. Paired with a light frame, it offers an exceptional flying experience.
Efficient Winding: Features single, thick copper wire winding. This design reduces energy loss, boosting motor efficiency.
Unique Cooling: Innovative cooling design ensures proper ventilation, preventing overheating. Dynamic testing improves acceleration, keeping speed stable and operation smooth.
User Recommendations
The motors come with high-lever imported bearings to improve their lifespan. These bearings are new and come in their original packaging—not used, low-quality, or counterfeit bearings.
Official tests show the motor can achieve 60-80 hours of flight time. We strongly recommend replacing the bearings after 60 hours of use to ensure safe flights, even if the bearings appear to be in good condition, as bearings are consumable parts of the motor.
Compatibility
This motor supports the installation of YHR carbon fiber propellers and other propellers with M6 holes. YHR offers a full range of compatible products, including high-performance propellers and ESCs, designed to meet the diverse needs of UAV applications. Whether for professional photography, industrial surveying, or mapping, our motor provides optimal performance, reliable power delivery, and long-lasting durability.




