The Gemfan 7140-3 is a 7-inch tri-blade propeller designed for high-altitude and plateau drone operations. Constructed from durable PC material, it features a 4-inch pitch, 180.34 mm diameter, and weighs 9.8 g. Engineered to maximize thrust and flight efficiency at high elevations, the 7140-3 also incorporates a specialized surface treatment with a frosted front and glazed rear, enhancing stability and reducing the likelihood of loss of control at high RPM. Compatible with 5 mm motor mounts and recommended for 2808 1300KV-class motors. Available in Black.
Key Features
Tri-blade design optimized for high-altitude efficiency and stable flight
4-inch pitch delivers strong pull and responsive throttle control
Specialized surface treatment improves airflow, stability, and reduces control loss
Durable PC construction ensures longevity and resistance to high-stress operations
Standard 5 mm hub fits 2808 1300KV-class motors
Black color for visual orientation and professional appearance
Applications
High-altitude aerial filming and photography
Drones operating in plateau or thin-air environments
Quads requiring stable, efficient flight at high RPM
Professional cinematography and long-endurance FPV applications
Features & Advantages
Enhanced High-Altitude Performance
Optimized blade geometry provides stronger pull and efficient lift at higher elevations.
Special Surface Treatment
Frosted front and glazed rear reduce airflow disruption, improving stability and control.
Durable Construction
PC material ensures resistance to stress and extended service life.
Motor Compatibility
5 mm hub fits 2808 1300KV motors for secure and reliable installation.
Professional Aesthetic
Black finish provides improved orientation and a sleek, professional look.
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