Halton Mayfly

The Halton Mayfly was a British two-seat biplane designed by C.H. Latimer-Needham and built by the Halton Aero Club between 1926 and 1927.[1] Registered G-EBOO and named the HAC.1 Mayfly it first flew on 31 January 1927.[1] It was converted to a single-seater and was flown in a number of air races including the King's Cup Race.[1] It was entered in the 1926 Lympne light aircraft trials as No. 8 but failed to arrive in time for the elimination trials.[2]

Mayfly
Role Sports biplane
National origin United Kingdom
Manufacturer Halton Aero Club
Designer C.H. Latimer-Needham
First flight 31 January 1927
Number built 1

By 1928 the aircraft had been converted from a biplane to a parasol monoplane and was renamed the Halton HAC.2 Minus.[1] It was used again for air racing, being entered in the 1928 and 1928 King's Cup Races.[1] The aircraft was dismantled at Halton in 1930.[1]

Variants
HAC.1 Mayfly
Two-seat then single-seat biplane powered by a Bristol Cherub III engine.[1]
HAC.2 Minus
The Mayfly converted into a parasol monoplane.[1]

Specifications (Mayfly)
Halton HAC-1 Mayfly 3-view drawing from Le Document aéronautique October,1926

Data from [1]

General characteristics

  • Crew: one
  • Length: 22 ft 0 in (6.71 m)
  • Upper wingspan: 28 ft 6 in (8.69 m)
  • Lower wingspan: 22 ft 0 in (6.71 m) [3]
  • Wing area: 195 sq ft (18.1 m2) [3]
  • Empty weight: 480 lb (218 kg)
  • Gross weight: 920 lb (417 kg)
  • Powerplant: 1 × Bristol Cherub III Two-cylinder, air-cooled piston engine, 32 hp (24 kW)

Performance

  • Maximum speed: 83.5 mph (134.4 km/h, 72.6 kn)
  • Cruise speed: 75 mph (121 km/h, 65 kn)

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References

Notes
  1. Jackson 1973, pp. 319-320
  2. Flight 16 September 1926 p.592-8
  3. Flight 17 February 1927 p.83

Bibliography
  • Jackson, A.J. (1973). British Civil Aircraft since 1919 Volume 2. London: Putnam. ISBN 0-370-10010-7.
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