Argus As 8

Variants

As 8A

Initial production version 71 kW (95 hp) maximum for 5 minutes, 60 kW (80 hp) continuous.

As 8B

A more powerful variant developing 101 kW (135 hp) maximum for 5 minutes, 86 kW (115 hp) continuous.

As 8R

A variant produced for sport aircraft, particularly for competition use, developing 110 kW (150 hp) for take-off. Featuring:

Increased compression ratio, from 5.36 to 5.8

Improved cooling by increasing the numbers of cooling fins at the cylinder head and the cylinder body

Increasing the heat dispersing area of the pistons

Improved crankcase and oil cooling

Improved cylinder charging

Modified valve timing

Applications

Albatros L 100

Albatros Al 101

Arado L II (As 8A)

Arado L IIa (As 8R)

BFW M.23

BFW M.27

BFW M.29

Heinkel He 64

Klemm L 25E

Ruhrtaler Ru.3

Specifications (As 8B)

Data from

General characteristics

Type: 4-cylinder inverted air-cooled in-line piston engine

Bore: 120 mm (4.72 in)

Stroke: 140 mm (5.51 in)

Displacement: 6.333 l (386.46 cu in)

Length: 1,075 mm (42.3 in) without airscrew hub

Width: 470 mm (18.5 in)

Height: 731 mm (28.8 in)

Dry weight: 116 kg (256 lb) empty

Components

Valvetrain: Overhead valves operated by pushrods and rockers

Fuel system: One down-draught carburretor

Fuel type: Aviation gasoline

Oil system: Pressure feed

Cooling system: Air-cooled

Performance

Power output: 101 kW (135 hp) maximum for 5 minutes at 2200 rpm, 86 kW (115 hp) continuous at 2090 rpm.

Compression ratio: 5.36:1

Specific fuel consumption: 212 g/PSh at maximum, 236 g/PSh at continuous

Oil consumption: 1.2 kg (2.6 lb) / h