DUC Propellers

SportairUSA is the USA distributor for DUC Propellers, the industry-leading forged carbon propellers from DUC Helices. There are models of DUC propellers suitable for light sport aircraft, ultralights, powered parachutes and experimental aircraft up to 140 HP.

Guaranteed Satisfaction!

If your airplane does not perform better with the DUC propeller, return it within 30 days for a full refund.

Informative Video

View an interesting and informative video about DUC propellers by clicking below.

The Swirl

The Swirl is a simple, ground-adjustable propeller that performs like a complex constant-speed prop. It is the propeller of choice for faster airplanes.

The blades of the Swirl propeller are designed to adjust the effective angle of attack under differing aerodynamic loads to optimize performance while maintaining engine RPM in the optimal torque range. This is done without movement or twisting of the blades. As a result, the DUC Swirl propeller has a constant speed effect, even though the pitch is set on the ground.

The prop takes a slimmer bite under load, and a fatter bite when cruising, without the need for complex electro-mechanical adjustments. Thanks to this effect, there is very little variation of RPM engine between static and dynamic loads. DUC propellers perform better through the whole of the flight envelope, exhibiting:

• Constant speed effect in a simple, not complex, propeller
• Better effectiveness on takeoff and climb due to higher engine speed
• Better cruise speed for a given RPM
• Very smooth operating characteristics

In the INCONEL version, the Swirl has the same advantages as the standard version. The Inconel Swirl blade has a very hard Inconel stainless steel insert to protect the leading edge. This propeller is well suited to a hostile environment (sand, gravel, etc....)

The Windspoon

The Windspoon, with its revolutionary shape, offers unrivalled performance for slower aircraft (speeds up to 80 kts for engines up to 120 hp). It is the ideal solution for trikes and similar aircraft.

Windspoon propellers, in either the tractor or pusher configuration, produce more thrust at lower airspeed than any other propeller.

The precisely engineered profile of the blade is calculated to control the flow of air over the entire surface of the Windspoon. A contrary twist in the profile reduces stress and results in longer blade life. The revolutionary tip design reduces the tip vortex effect. The results are

• Greater thrust at lower airspeed
• Maximum performance
• Reduced stress for longer blade life
• Lower fuel consumption
• Less noise

The INCONEL version of the Windspoon adds a very hard Inconel stainless steel insert to proect the leading edge.

Forged Carbon

DUC propellers are forged from thermosetting carbon fiber, a process which enables precise reproduction of complex shapes, smooth surfaces and thin trailing edges that result in more power, better efficiency and reduced noise.

Extended Warranty

Warranted for six years, 600 hours against defects in materials and workmanship.

Wide Range of Applications

There are DUC propellers for applications ranging from 40 hp ultralights to 180 hp four-seaters in several configurations:

• 2 blades or 3
• Tractor or Pusher
• Clockwise or counter-clockwise rotation
• A variety of sizes

SportairUSA Features These DUC Propellers for 900-series Rotax Engines

DUC makes a variety of other propellers, for direct drive and geared applications, that we will special order to meet your requirements.

Pricing, Ordering & Delivery For a price quote, fill in the Propeller Specification Form and return it to us. Fax or the form to us. Parts are normally shipped FedEx Ground from Little Rock, Arkansas, but alternative shipping can be arranged, or call SportairUSA for answers to your questions. 888-FLY-SLSA (888-359-7572).

A complete propeller consists of the hub, blade set, spinner, back plate and bolts. You may choose to order the complete propeller or any of the components. Blades are sold only in balanced sets, with protective metal edges.

Special Orders
SportairUSA will stock and deliver any DUC propeller with about six weeks lead time. To view the entire range of products, visit the Web site of DUC Helices . When you order, provide SportairUSA with the model number and specifications you require.