AutoProp
Description:
automatic variable pitch, the Autoprop adjusts for optimal performance in changing conditions its 180-degree blade rotation provides excellent stopping power and reduces prop walk when reversing. It is designed to be more fuel-efficient, allow for lower engine RPMs for a given speed (overdrive), and perform well when sailing, motoring, or in adverse weather
Features:
Automatic variable pitch: The propeller automatically adjusts its blade pitch to maintain an optimal angle of attack, balancing hydrodynamic and centrifugal forces for maximum efficiency at all times.
Improved performance: This allows for increased speed at lower engine RPMs, better fuel consumption, and more power output when a coarser pitch is needed, such as for towing.
Excellent reverse thrust and low prop walk: The blades rotate 180 degrees in reverse, providing the same thrust as in forward motion with minimal prop walk and greater stopping power.
Durable construction: Made from NiBral alloy for increased strength and resistance to marine growth.
Versatile design: Available for both traditional shafts and sail drives, with sail drive models incorporating a rubber insert to act as a torsional damper.
Self-contained operation: It works without mechanical or electronic connections, relying on its geometric design to automatically adjust the pitch
Varifold
Description:
low-drag folding blades for sailing and efficient thrust under power, combining the benefits of both fixed and folding propellers. Advanced blade design for low noise and vibration, a streamlined hub, and a durable nickel-aluminium-bronze alloy construction. They are available in 2, 3, and 4-blade versions for a wide range of engine sizes, from 10hp to 1000hp.
Features:
Folding blades: Blades fold completely together when sailing to minimize drag.
Efficient motoring: Provides excellent thrust, smooth and quiet operation, and handles both ahead and astern propulsion well.
Advanced blade design: Features a helical pitch distribution with pitch reduction at the tip and skewed blades to reduce noisy pressure pulses against the hull.
Low noise and vibration: The unique design significantly reduces noise and vibration during motoring.
Quick opening: Uses inertia and hydrodynamic forces to open the blades quickly and reliably, even in reverse.
