Gemfan Vortex 7x9R 2-Blade Reverse Electric Propeller – Glass Fiber Nylon

Gemfan Vortex 7x9R is a high-performance 7-inch, 2-blade reverse-rotation electric propeller designed for fixed-wing RC aircraft, electric-powered model airplanes, and custom aerial platforms. Manufactured using glass-fiber-reinforced nylon, this propeller combines durable construction, aerodynamic blade engineering, and lightweight design for reliable electric propulsion applications.

Featuring a 7-inch diameter and 9-inch pitch, the Gemfan Vortex 7x9R is intended for compatible reverse-rotation propulsion systems. Its aerodynamic design supports efficient airflow and responsive performance when paired with an appropriate motor and electronic speed controller.

Available at RC Store Hub India, this propeller is suitable for RC airplane enthusiasts, aircraft builders, researchers, and educational projects.

Gemfan Vortex 7x9R Specifications

Key Features of Gemfan Vortex 7x9R

1. Reverse-Rotation Propeller Design

The Gemfan Vortex 7x9R is the reverse-rotation version of the Vortex 7×9 electric propeller.

It is intended for aircraft propulsion systems requiring the reverse-rotation variant instead of the standard 7x9E model.

Correct rotation direction is important for ensuring the propeller produces thrust in the intended direction.

Before installation, verify the motor’s rotation direction and the correct orientation of the propeller blades.

2. Advanced Aerodynamic Blade Profile

The Gemfan Vortex 7x9R features an aerodynamic blade profile developed to provide efficient propulsion.

Gemfan uses computational fluid dynamics (CFD) simulations to analyze the airflow around its Vortex electric propellers.

This engineering approach helps optimize blade geometry, airflow characteristics, and structural performance.

The design aims to provide effective thrust generation and stable operation when installed on compatible electric aircraft.

3. Durable Glass-Fiber Nylon Construction

The Gemfan 7x9R Propeller is manufactured using glass-fiber-reinforced nylon.

This material provides a combination of structural rigidity, flexibility, and durability.

Glass-fiber reinforcement helps the propeller maintain its intended shape under normal aerodynamic loads.

The material is suitable for demanding electric propulsion applications where consistent blade geometry and component reliability are important.

4. High-Pitch 7×9 Configuration

The Gemfan Vortex 7x9R features a 7-inch diameter and a 9-inch pitch.

This relatively high-pitch configuration is intended for electric fixed-wing aircraft applications where forward-speed characteristics are important.

The actual thrust, efficiency, and operating current depend on the motor KV rating, battery voltage, aircraft configuration, and flight conditions.

Because higher-pitch propellers can produce substantial motor loading, proper powertrain matching is essential.

5. Lightweight 9.8g Propeller

Each Gemfan Vortex 7x9R propeller weighs approximately 9.8 grams.

Its lightweight construction helps limit unnecessary rotating mass.

Low rotating mass can support responsive motor operation, although the overall aircraft performance depends on the complete propulsion system.

The manufacturer specifies a packaged product weight of approximately 24.1 grams.

6. Precision Dynamic Balancing

The Gemfan Vortex electric propeller series undergoes factory dynamic balancing quality control.

Proper propeller balancing is important for reducing vibration during operation.

Excessive vibration can affect motor bearings, aircraft structures, and onboard electronic equipment.

Gemfan’s quality-control process is intended to maintain consistent propeller performance and smooth operation.

7. Optimized Blade Tips

The Vortex series incorporates thin blade tips designed to reduce aerodynamic losses and improve airflow characteristics.

The refined blade geometry is intended to minimize tip vortex losses while reducing unnecessary operating noise.

The aerodynamic design supports smoother airflow and effective propulsion across compatible electric aircraft applications.

8. Anti-Slip Hub and Multiple Adapters

The Gemfan Vortex 7x9R includes an anti-slip hub surface designed to improve mounting security.

The propeller features a 6.35mm center hole and includes five adapter sizes:

• 3mm
• 4mm
• 5mm
• 6mm
• 7mm

These adapters provide mounting options for different compatible propeller shaft arrangements.

Always confirm that the selected adapter and mounting hardware fit securely before operation.

Applications of Gemfan Vortex 7x9R

The Gemfan Vortex 7x9R is suitable for several electric RC aircraft applications.

Electric RC Airplanes: Suitable for aircraft requiring a compatible reverse-rotation propeller.

Counter-Rotating Propulsion Systems: Can be considered for aircraft designs that use opposing propeller rotation directions, subject to motor and installation compatibility.

Custom Fixed-Wing Aircraft: An option for builders developing specialized electric aircraft propulsion systems.

RC Aircraft Replacement Parts: Suitable as a replacement where the specified dimensions, pitch, mounting interface, and rotation match the original propeller.

Educational and Research Projects: Useful for studying electric propulsion, propeller aerodynamics, and reverse-rotation systems.

Why Choose Gemfan Vortex 7x9R?

The Gemfan Vortex 7x9R combines aerodynamic engineering with glass-fiber-reinforced nylon construction.

Its reverse-rotation configuration makes it suitable for propulsion systems requiring the R variant rather than the standard E model.

The optimized blade profile, factory balancing process, and refined hub design support consistent operation.

Its 7-inch diameter and 9-inch pitch provide a performance-oriented configuration for properly matched electric aircraft.

The Vortex series also incorporates an aerodynamic leading-edge treatment intended to support efficient operation at higher rotational speeds.

Selecting the correct propeller requires careful consideration of motor specifications, aircraft weight, battery voltage, and intended operating conditions.

Motor Compatibility and Installation

Before installing the Gemfan Vortex 7x9R 2-Blade Reverse Electric Propeller, confirm the motor manufacturer’s recommended propeller diameter and pitch.

Check the correct motor rotation direction and blade orientation.

Ensure adequate propeller clearance around the aircraft structure.

Choose a suitable adapter and securely tighten the propeller mounting hardware according to the manufacturer’s recommendations.

Disconnect the aircraft battery before working on the propeller.

Inspect both blades for cracks, bending, chips, or other damage before each flight.

Never operate damaged propellers.

For safe operation, conduct initial testing in an open area and follow all relevant motor, ESC, and battery limitations.

Buy Gemfan Vortex 7x9R in India at RC Store Hub

Looking to buy the Gemfan Vortex 7x9R 2-Blade Reverse Electric Propeller in India?

RC Store Hub supplies RC electronics, electric propellers, FPV drone components, motors, batteries, frames, and accessories for aircraft builders and enthusiasts.

Whether you are working on a custom fixed-wing aircraft or replacing a reverse-rotation propeller, selecting the correct specifications is essential for reliable operation.

Explore Gemfan propellers and other electric aircraft accessories at RC Store Hub.

Website: https://rcstorehub.com

Product: Gemfan Vortex 7x9R 2-Blade Reverse

Material: Glass-Fiber-Reinforced Nylon

For availability, pricing, and bulk-order enquiries, contact RC Store Hub.