Falcon 21x12.5 Carbon Fiber Propeller for Gas RC Airplanes

Falcon 21x12.5 Carbon Fiber Gas Propeller

The Falcon 21x12.5 Carbon Fiber Gas Propeller is designed for gas-powered RC airplanes that need efficient forward flight, smooth throttle response, and stable performance under load. The 21x12.5 configuration is a higher-pitch setup that can support stronger forward speed when matched correctly to the engine and airframe.

Built from carbon fiber, this propeller provides the rigidity and durability needed for demanding sport, aerobatic, and performance-oriented gas RC aircraft.

Best For

• Sport and aerobatic gas RC airplanes
• Performance-oriented airframes
• Pilots looking for more forward speed than lower-pitch options
• Properly matched gas setups where a 21-inch propeller is recommended

Typical Engine Class Range

This propeller is commonly used on gas-powered RC aircraft that prioritize efficient forward flight and stable RPM under load.

• Large 35cc–40cc class gas engines, depending on aircraft type, exhaust setup, RPM range, field elevation, and flying style.

Higher-pitch propellers require proper engine tuning and enough engine power to maintain RPM efficiently during flight. Always verify propeller recommendations from your engine manufacturer before installation.

Precision Construction

This propeller features a factory-drilled 10mm center hole, approximately 0.3937" or 25/64". Falcon carbon gas propellers are individually inspected and factory pre-balanced to help reduce vibration. Final balance verification is always recommended before use.

Key Features

• Carbon Fiber Construction: Lightweight, rigid, and built for demanding gas-powered RC aircraft.
• Speed-Oriented Performance: The 12.5-inch pitch can support efficient forward flight and increased airspeed when properly matched to the engine and aircraft.
• 21-Inch Gas Propeller Size: Suitable for properly matched sport and aerobatic aircraft that call for a 21-inch gas propeller.
• Responsive Throttle Feel: Lightweight carbon fiber construction can help provide crisp throttle response when properly matched to the engine.
• Efficient Blade Profile: Blade design supports smooth airflow and stable performance during demanding flight conditions.
• Factory Pre-Balanced: Pre-balanced to help reduce vibration, with final balance verification recommended before installation.
• Propeller Covers Included: Helps protect the blades during storage, transport, and field handling.
• High Gloss Finish: Finished with Falcon’s clean carbon fiber appearance.

Technical Specifications

Propeller Selection Note

A 21x12.5 propeller is generally a speed-oriented option compared with lower-pitch propellers of the same diameter. It may provide increased forward speed and efficient cruising flight when the engine has enough power to maintain RPM under load.

If your setup needs easier spool-up, stronger acceleration, or more low-speed pull, a lower-pitch option such as a 21x10 or 21x8 may be a better match. If your goal is increased forward speed and your engine can maintain RPM efficiently, the 21x12.5 may be appropriate.

Important Safety Reminder

Always inspect the propeller before use. Check for cracks, chips, delamination, shipping damage, hub fit, bolt pattern, spinner clearance, engine RPM range, and ground clearance before flying.

Why Buy from Gator RC?

Gator RC carries Falcon carbon fiber propellers for serious RC pilots looking for dependable performance and quality construction. We can help match the right propeller size to your aircraft, engine combination, and flying style.