The Gemfan Flash 7042 is a bi-blade propeller engineered to achieve an optimal balance between lightweight construction, high power efficiency, and broad motor compatibility. Crafted from durable Polycarbonate (PC), it is ideally suited for pilots who prioritize stable, predictable flight characteristics and seek favorable endurance performance for long-duration flights.
Key Features
Model: Flash 7042
Blade Count: 2
Diameter: 7.0 inch (~177.8 mm)
Pitch: 4.2 inch
Weight: ~5.52 g (per propeller)
Material: Polycarbonate (PC)
Hub Thickness: 7.5 mm
Blade Width: ~18 mm
Mounting Interface: 5 mm shaft hole (M5)
Compatible Motor Size: 2407 to 2408
Packaging: 2 CW + 2 CCW per pack
Applications
7-inch class long-range (LR) and long-endurance FPV drones
Aerial photography, mapping, and cinematic cruising platforms
Builds utilizing 2407 or 2408 size motors for efficient propulsion
Features & Advantages
High-Efficiency Bi-Blade Design: The two-blade configuration minimizes aerodynamic drag and rotational mass, maximizing flight efficiency and significantly extending flight time for long-range and endurance-focused operations.
Lightweight & Optimized Performance: Weighing approximately 5.52g, the design reduces power consumption while the 7-inch diameter and 4.2-inch pitch provide ample, efficient thrust for stable cruising and smooth acceleration.
Stable & Predictable Flight Characteristics: Engineered to deliver smooth, linear control response and excellent in-flight stability, which is critical for precise navigation, filming, and long-distance flights.
Robust Construction & Secure Mounting: Features a thick 7.5mm hub and a universal 5mm (M5) shaft hole, ensuring durability and a reliable connection for consistent power transfer to compatible 2407-2408 motors.
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