Walter Atom

1930s Czech piston aircraft engine
Atom
Type Piston aircraft engine
National origin Czechoslovakia
Manufacturer Walter Aircraft Engines
First run 1934

The Walter Atom is an air-cooled horizontal two-cylinder engine used on light aircraft. The Atom is a Czechoslovakian engine first produced in 1934.

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

See also

Comparable engines

  • ABC Scorpion
  • Aeronca E-113
  • Armstrong Siddeley Ounce
  • Bristol Cherub

Related lists

References

Wikimedia Commons has media related to Walter Atom.

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

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