Hartzell Launches Composite Prop for Rotax 916 Engines

CubCrafters' Carbon Cub UL is the first aircraft featuring the new lightweight carbon fiber propeller.

Kimberly Johnson

Tuesday, February 25, 2025 at 12:17 PM ET

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Kimberly Johnson

CubCrafters’ Carbon Cub UL is the first aircraft to feature the Kestral prop. [Courtesy: Hartzell Propeller]

Key Takeaways:

Hartzell Propeller has unveiled the Kestrel, a new lightweight carbon fiber constant speed propeller specifically designed for Rotax 916 powered aircraft.
The Kestrel is the lightest constant speed propeller available for Rotax 916 engines, weighing 19.6 pounds, and is first featured on CubCrafters' Carbon Cub UL.
This three-blade, 76-inch prop combines composite design with high-performance aerodynamics and has received ASTM approval, with FAA certification expected later this year.

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Hartzell Propeller has unveiled a new lightweight carbon fiber constant speed prop specifically designed for Rotax 916 powered aircraft, it announced Tuesday.

CubCrafters’ Carbon Cub UL is the first aircraft to feature the Kestrel prop which, according to the company, is expected to be a popular upgrade from fixed or ground-adjustable propellers.