The Sauer S 2400 UL is a 4 stroke aircraft engine for

homebuilt Homebuilt machines are machines built outside of specialised workshops or factories. This can include different things such as kit cars or homebuilt computers, but normally it pertains to homebuilt aircraft, also known as amateur-built aircraft ...

and

ultralight aircraft Ultralight aviation (called microlight aviation in some countries) is the flying of lightweight, 1- or 2-seat fixed-wing aircraft. Some countries differentiate between weight-shift control and conventional three-axis control aircraft with aile ...

.
Sauer Flugmotorenbau GmbH

Design and development

The engine is based on the

Volkswagen air-cooled engine The Volkswagen air-cooled engine is an air-cooled, gasoline-fuelled, boxer engine with four horizontally opposed cast-iron cylinders, cast aluminum alloy cylinder heads and pistons, magnesium-alloy crankcase, and forged steel crankshaft and co ...

or the

Wasserboxer The Volkswagen wasserboxer is a four cylinder horizontally opposed pushrod overhead-valve (OHV) petrol engine developed by Volkswagen. The engine is water-cooled, and takes its name from the german: "wasserboxer" ("Water-boxer"); with "boxer" b ...

. It is extensively modified for aircraft use and all the parts are custom made. The engine is derived from the certified engines produced by the same manufacturer and used in several motorgliders and small aircraft. The engine can be delivered with aluminium or magnesium casing (

-casing or the casing from the

beetle Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 describ ...

engine), where the aluminium casing weighs 7 kg more.

Applications

Groppo Trial The Groppo XL and Groppo Trail are very similar single engine, tandem seat, high wing ultralight aircraft designed and built in Italy. Both can be supplied complete or in kit form. The two models differ chiefly in undercarriage type. Design and ...

Specifications (variant)

References

External links

* {{Sauer aeroengines S2400UL

Design and development

Applications

Specifications (variant)

See also

References

External links