Cirrus Major

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The Cirrus Major started life as a development of the original Cirrus series of aircraft engines which progressed through a number of variants Cirrus I, II, & III. Each with slightly different displacement and power. Later Cirrus was bought by Hermes Engine Company and they produced the Cirrus Hermes I, II, III and IV. Again each differing slightly in displacement and power.

In 1934 Cirrus was bought again by the Blackburn Aircraft company and later that year the Cirrus Minor was produced and in 1935 the Cirrus Major was produced.

Contents

[edit] Variants

Cirrus Major II
150hp variant.
Cirrus Major III
Higher compression engine with an increase in output to 150hp (116kW).

[edit] Specifications (Cirrus Major)

General characteristics

  • Type: inline air cooled inverted 4 cylinder
  • Bore: 120 mm (4.72 in)
  • Stroke: 130 mm (5.12 in)
  • Displacement: 386.1 cu in (6.33 L)
  • Length: 1,075 mm (42¼ in)
  • Width: 433 mm (17 in)
  • Height: 747 mm (29½ in)
  • Dry weight: 147 kg (325 lb)

Components

  • Valvetrain: 1 inlet and 1 exhaust valve per cylinder
  • Fuel system: 1 Claudel-Hobson carburetor
  • Fuel type: 70 octane
  • Cooling system: air

Performance

[edit] Application

[edit] References