Product overview
The Gemfan 5127.9-3 is a three-blade PC propeller for 5-inch FPV racing drones, including competitive track flying, high-speed outdoor flying and advanced pilot training. Co-developed with Australian racer Thomas, it combines a patented airfoil with a matte leading edge and smooth trailing edge. This surface treatment is intended to improve airflow behavior, with an approximately 5% increase in thrust and efficiency at full speed. That performance figure is specifically tied to full-speed operation.
For installation planning, the propeller has a 129.69 mm diameter, 2.79-inch pitch and maximum blade width of 15 mm. Its center is 6.4 mm thick with a 5 mm mounting hole, and each propeller weighs 4.4 g. The recommended motor is 2207, and the specified maximum takeoff weight is 500 g. This is a propulsion component for integration into a racing drone. Color choices are Orange, Clear Blue, Midnight Black and Yellow.
