Gemfan Flash 7040 Tri-Blade Propeller (PC)
Product Overview
The Gemfan Flash 7040 tri-blade propeller is engineered to achieve an optimal balance between lightweight construction and superior aerodynamic efficiency, delivering exceptionally smooth and sustained power output. It is ideally suited for extended-range FPV cruising, cinematic aerial platforms, and other applications that prioritize gentle, stable, and enduring flight performance.

Key Features

• Model: Flash 7040

• Blade Count: 3

• Diameter: ~178.43 mm (~7.0 inch)

• Pitch: 4.0 inch

• Weight: ~7.9 g (per propeller)

• Material: Polycarbonate (PC)

• Hub Thickness: 7.5 mm

• Blade Width: ~18.24 mm

• Mounting Interface: 5 mm shaft hole (M5)

• Recommended Motor Size & KV: 2206, around 1500KV

• Packaging: 2 CW + 2 CCW per pack

Applications

• 7-inch class long-range (LR) and endurance FPV drones

• Cinematic filming and aerial photography platforms

• Builds utilizing 2206 motors with low KV ratings (e.g., ~1500KV) for efficient power

Features & Advantages

• Optimized Aerodynamic Efficiency: The tri-blade design with a 7-inch diameter and 4.0-inch pitch is calibrated for high propulsive efficiency, reducing power consumption and enabling longer flight durations.

• Smooth & Sustained Power Delivery: Engineered to provide exceptionally linear and stable thrust, ensuring vibration-free operation, smooth footage, and predictable handling for relaxed, long-distance flights.

• Lightweight & Durable Construction: Utilizes robust PC material in a design that prioritizes weight savings without compromising on the structural integrity needed for larger propellers.

• Motor-Optimized Compatibility: Specifically recommended for 2206 motors around 1500KV, creating a matched powertrain combination ideal for efficient cruising and gentle flight characteristics.

Company Strength
Ningbo GEMFANHOBBY Co., Ltd. (GEMFAN) is a professional drone propeller manufacturer integrating R&D, design, production, and global marketing.

Highlights:

• Expert Team: Specialists in composite materials, aerodynamics, and UAV propulsion systems.

• Innovative Technology: Holds nearly 100 independent design patents.

• Global Reach: Products are exported to over 60 countries worldwide.

• Market Leadership: FPV propellers account for approximately 60% of the global market share.

• Industry Recognition: The official propeller supplier for National Drone Racing Championship teams.

• Core Values: Professionalism · Quality · Innovation · Integrity · Service