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ABC Wasp

R-7 piston aircraft engine

ABC Wasp

R-7 piston aircraft engine

FieldValue
nameABC Wasp
imageBritish ABC WASP.jpg
captionThe WASP engine
engine_typeRadial engine
national_originUnited Kingdom
manufacturerABC Motors
designerGranville Bradshaw
first_run1916
number_built56

The ABC Wasp was an experimental 170 hp (127 kW) seven-cylinder radial engine designed by the noted British engineer Granville Bradshaw, and primarily built by ABC Motors Limited. An order for twelve experimental ABC Wasp engines was placed with Guy Motors on 19 April 1918. Eight ABC Wasp engines were made by Crossley Motors Ltd of Manchester, England.

Design and development

The ABC Wasp was one of the first large non-rotary air-cooled radials. At a weight of 290 pounds (131 kg), it had a reasonable power-to-weight ratio at 0.6 horsepower per pound. This World War I–era engine is noteworthy because it was one of the first in which the cylinders were coated with copper in an attempt to dissipate heat. The ABC Wasp never evolved beyond the experimental stage, but it was the predecessor of the unsuccessful Dragonfly engine.

Variants

;Wasp I :1918, 160 hp (119 kW) 4.5 x ;Wasp II :1919, 200 hp (149 kW) 4.75 x

Applications

;Wasp I

  • Avro 504K
  • BAT Bantam
  • BAT Baboon
  • Sopwith Snail
  • Westland Wagtail

;Wasp II

  • Avro 504K
  • BAT Bantam
  • Saunders Kittiwake
  • Sopwith Snail
  • Westland Wagtail

Specifications (Wasp I)

The ABC Wasp on display.

|power/weight=0.63 hp/lb (1.05 kW/kg)

References

Notes

Bibliography

  • Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. .

References

  1. "Aircraft Component Manufacturers – Guy Motors".
  2. "Aircraft engine, ABC Wasp No.1".
  3. "Fact Sheets : British ABC Wasp : British ABC Wasp".
  4. "OLD RHINEBECK AERODROME – ABC Wasp".
  5. (1921). "Airplane Engine Encyclopedia". THE OTTERBEIN PRESS.
  6. Lumsden 2003, p.52.
Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

1910s-aircraft-piston-engines abc-aircraft-engines aircraft-air-cooled-radial-piston-engines
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