Walter Atom

Atom
Type	Piston aircraft engine
National origin	Czechoslovakia
Manufacturer	Walter Aircraft Engines
First run	1937

The Walter Atom is an air-cooled horizontal two-cylinder engine used on light aircraft. The Atom is a Czechoslovakian engine first produced in 1937.

Specifications (Atom)

General characteristics

Type: Horizontally-opposed 2 cylinder air-cooled
Bore: 85 mm (3.35 in)
Stroke: 96 mm (3.78 in)
Displacement: 1.09 L (66.5 cu in)
Length: 510 mm (20.08 in)
Width: 815 mm (32.09 in)
Height: 409 mm (16.10 in)
Dry weight: 40 kg (88.2 lb)

Components

Valvetrain: 1 inlet and one exhaust valve per cylinder
Fuel system: 2 Amal carburettors
Fuel type: 68 octane
Cooling system: air

Performance

Power output: 21 kW (28 hp) at 3000 RPM
Compression ratio: 5.2:1
Power-to-weight ratio: 2.14 kg/kW (3.52 lb/hp) at cruise

References

http://www.oldengine.org/members/diesel/Duxford/czechaer1.htm

Walter aircraft engines

Engines	Atlas M208

Opposed engines	Atom M202

Inline engines	M 332 M 337 Junior Major Mikron Minor

V-12 engines	Sagitta

Radial engines	NZ 40 NZ 60 NZ 85 NZ 120 Bora Castor Gemma Jupiter Mars I Mars Merkur Pegas Polaris Pollux Regulus Scolar Super Castor Vega Venus

Turbojets	M05 M06 M701

Turboprops	H80 M601 M602

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