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 Merkur Pegas Polaris Pollux Regulus Scolar Super Castor Vega Venus

Turbojets	M05 M06 M701

Turboprops	H80 M601 M602

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