Aeronca E-107

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]

E-107

Standard production engine

E-107A

The E-107A was produced for Aeronca by the Govro-Nelson Company of Detroit, Michigan.^[2]

O-107

Designation given to engines fitted to impressed aircraft

• Aeronca C-2
• Pickering-Pearson KP.2

• An E-107 is on display at the EAA Airventure Museum in Oshkosh, Wisconsin
• The restored first prototype Aeronca C-2 (registration NC626N) fitted with an E-107 is on display at the Udvar-Hazy building of the Smithsonian's National Air and Space Museum.^[4]

Data from ^[5]

• Type: 2-cyl. air-cooled horizontally opposed flathead engine
• Bore: 4.5 in (110 mm)
• Stroke: 4 in (100 mm)
• Displacement: 107 cubic inches
• Dry weight: 114 lb (52 kg)

• 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, (cruising at 2000 rpm)
• 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

Comparable engines

• Bristol Cherub
• Lawrance A-3

Related lists

• List of aircraft engines