Falcon Series for Rotax Engines
The Falcon series is Hartzell’s next-generation carbon fiber propeller lineup designed specifically for light sport aircraft (LSA) powered by Rotax aircraft engines.
With a continued investment in LSA propeller design, Hartzell is bringing high-performance, purpose-built propellers to modern sport pilots.
The first in the new Falcon series, the Kestrel is a three-blade, carbon fiber, constant-speed propeller custom-engineered to optimize Rotax 915 and 916 aircraft engine performance.
First featured on the STOL CubCrafters Carbon Cub UL, the Kestrel offers a proven upgrade from fixed or ground-adjustable propellers, unlocking greater performance and efficiency for light sport aircraft.
The Kestrel propeller has received ASTM approval, with FAA certification expected later this year.

• Only 19.6 lbs — 10 pounds lighter than any other constant speed propeller option for Rotax 915 and 916
• Up to 3–4 knot increase in cruise speed
• Superior carbon fiber blade construction
• Improved takeoff and climb performance
• Smoother, more responsive handling
• Extremely durable blades with on-wing repairability to minimize downtime
• Tailored for backcountry and cross-country capabilities
• Propeller Type: Constant-speed
• Number of Blades: 3
• Diameter: 76 inches
• Weight: 19.6 lbs
• Blade Construction: Carbon Fiber
• Engine Compatibility: Rotax 915 & 916
“Hartzell’s Kestrel propeller is a game-changer for the Carbon Cub UL. It delivers superior handling, improved takeoff and climb performance, and a 3-4 knot increase in cruise speed compared to other propellers—all while maintaining a lightweight design. Plus, it looks fantastic on the aircraft.”
Pat Horgan
CubCrafters President and CEO
With the next generation of high-performance light sport aircraft on the horizon, now’s the time to make sure your propeller is MOSAIC-ready and engineered to perform.
Ready to get the most from your Rotax aircraft engine?