The Gemfan 5127.9-3 is a high-performance 5-inch racing propeller co-developed with Australian FPV racer Thomas. Constructed from durable PC (polycarbonate), it features a 129.69 mm diameter and 2.79-inch pitch, delivering fast throttle response, strong thrust, and precise control for competitive racing.
Incorporating Gemfan’s patented airfoil design, the propeller utilizes a matte leading edge and smooth trailing edge surface treatment, reducing airflow separation and improving aerodynamic efficiency. At high speeds, it achieves approximately 5% increased thrust and efficiency, helping pilots gain a competitive edge on race tracks.
Key Features
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Co-developed with professional FPV racer for optimized racing performance
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Patented airfoil design enhances thrust and aerodynamic efficiency
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Matte leading edge + smooth trailing edge for improved airflow control
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Approx. 5% performance boost at high-speed conditions
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Durable PC material for impact resistance and reliability
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Designed for precise, high-speed racing control
Applications
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5-inch FPV racing drones
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Competitive drone racing and track flying
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High-speed outdoor FPV environments
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Advanced pilot training and performance tuning
Features & Advantages
Enhanced Racing Performance
Optimized blade profile provides stronger thrust and faster acceleration for competitive racing.
Improved Aerodynamic Efficiency
Patented surface treatment reduces drag and improves airflow consistency, increasing efficiency at high speeds.
Precise Control Response
Balanced design ensures accurate throttle feedback and responsive handling through tight turns.
Durable Construction
High-quality PC material offers excellent impact resistance and long-lasting performance.
Optimized for High KV Motors
Designed to pair with 2207 motors, delivering stable and powerful output for racing setups.
Specifications
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Type: Gemfan 5127.9-3
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Material: PC
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Color: Orange / Clear Blue / Midnight Black / Yellow
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Prop Diameter: 129.69 mm
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Pitch: 2.79 inch
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Center Thickness: 6.4 mm
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Center Hole Inner Diameter: 5 mm
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Max Prop Width: 15 mm
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Weight (per prop): 4.4 g
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Recommended Motor: 2207
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Maximum Takeoff Weight: 500 g