Walter Atom

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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.

[edit] Specifications (Atom)

General characteristics

• Type: Horizontal 2 cylinder air cooled
• Bore: 85 mm (3.35 in)
• Stroke: 96 mm (3.78 in)
• Displacement: 1.09 L (67.1 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 Carburetors
• Fuel type: 68 octane
• Cooling system: air

Performance

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

[edit] References

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

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