Aeronca E-113

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E-113/J-99
JAPJ99.JPG
An Aeronca-JAP J-99 (licensed E-113) on display at the Shuttleworth Collection.
Type Flat-twin aircraft engine
Manufacturer Aeronca
JA Prestwich
First run 1936
Number built 1,800
Developed from Aeronca E-107

The E-113 was a small flat-twin piston engine developed by Aeronca for use in some of their light aircraft. It was an overhead valve development of the flathead configuration E-107.

Design and development[edit]

Originally fitted with a single ignition system, this was uprated to dual ignition when changes in FAA regulations made this mandatory in 1939. By that time, however, both the engine and the aircraft that it powered were facing obsolescence. Altogether, some 1,800 examples were built.

Variants[edit]

E-113A
Standard production model delivering 36-45 hp (26.85 - 33.56 kW)
E-113C
Uprated engine delivering 40-45 hp (29.83 - 33.56 kW)
Aeronca-JAP J-99
The E-113-C was license built in England as the Aeronca-JAP J-99 by J A Prestwich Limited (JAP) and powered several British aircraft types,[1] differing from the E-113 by being fitted with dual ignition.
O-117
Engines fitted to impressed aircraft were given the designation O-113.

Applications[edit]

E-113[edit]

J-99[edit]

Specifications (E-113)[edit]

General characteristics

  • Type: 2-cylinder air-cooled horizontally opposed aircraft piston engine
  • Bore: 4.25 in (107.95 mm)
  • Stroke: 4 in (101.6 mm)
  • Displacement: 113.49 in³ (1.86 L)
  • Dry weight: 118 lb (54 kg)

Components

  • Cooling system: Air-cooled

Performance

See also[edit]

Comparable engines
Related lists

References[edit]

Notes[edit]

  1. ^ Lumsden 2003, p.160.

Bibliography[edit]

  • Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
  • Trainor, Todd. Aeronca K and Aeronca Engines website
  • 1938 Aeronca engine manual (online copy available here)