Aeronca E-107

The Aeronca E-107 was one of the first low-cost reliable engines of the post-World War I era.[1]

E107 on display
Type Flat-twin aircraft engine
National origin United States of America
Manufacturer Aeronautical Corporation of America
Designed by Ray Poole and Robert Galloway
First run 1929
Major applications Aeronca C-2
Number built 115
Unit cost 600 US Dollar (1931)
Variants Aeronca E-113

Design and development

The E-107A was a production aviation flathead engine designed to replace a Morehouse engine on the first prototype of the Aeronca C-2. The first five were produced without cooling fins on the crankcase, but with all versions having air-cooling fins atop the cylinder heads, similar to many air-cooled two-stroke engines in appearance. A Winfleld Model 5 carburetor was standard for the engine.[2] The E-107 was replaced by the uprated, overhead valvetrain E-113 engine based on the same design.[3]


Standard production engine
The E-107A was produced for Aeronca by the Govro-Nelson Company of Detroit, Michigan.[2]
Designation given to engines fitted to impressed aircraft


Engines on display

Specifications (E-107)

Data from [5]

General characteristics


  • Valvetrain: One inlet and one exhaust valve per cylinder, operated by tappets directly from the camshaft
  • Oil system: scavenged pressure feed.
  • Cooling system: air-cooled


  • Power output: 30 hp (22 kW) maximum at 2,500 rpm, (cruiing rpm 2000rpm.
  • Compression ratio: 4:1
  • Specific fuel consumption: 0.55 lb/hp (0.33 kg/kW)/hr at 2,000 rpm
  • Oil consumption: 0.21 lb/hp (0.13 kg/kW)/hr

See also

Comparable engines

Related lists


  1. Janet Rose Daly Bednarek, Michael H. Bednarek. Dreams of flight: general aviation in the United States.
  2. "Aeronca E107A-39". Archived from the original on 4 July 2011. Retrieved 20 January 2012.
  3. Kenneth M. Molson, National Aviation Museum (Canada). Canada's National Aviation Museum: its history and collections. p. 100.
  4. "Aeronca C-2". Retrieved 20 January 2012.
  5. Grey, C.G., ed. (1931). Jane's all the World's Aircraft 1931. London: Sampson Low, Marston & company, ltd. pp. 64d–65d.
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