| E-113/J-99 | |
|---|---|
| |
| 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
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.
Following an incident in October 2015, where the propeller detached from an Aeronca C3, the Light Aircraft Association has issued an advisory that all aircraft fitted with these engines have the crankshaft attachment inspected prior to flying again. This issue was first recognised in 1939.
Variants
- 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, differing from the E-113 by being fitted with dual ignition.
- O-113
- Engines fitted to impressed aircraft were given the designation O-113.
Applications
E-113
J-99
- Aeronca 100
- Aeronca 300
- Britten-Norman BN-1
- Currie Wot
- Dart Kitten
- Hants and Sussex Aviation Herald
- Heath Parasol
- Hillson Praga
- Luton Minor
- Peterborough Ely
- Slingsby Motor Tutor
- Taylor J.T.1
- Tipsy Junior
Engines on display
- An Aeronca E-113 is on public display at the Aerospace Museum of California
Specifications (E-113)
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
- Power output: 36-40 hp (26.9-29.8 kW) at 2,400-2520 rpm
- Compression ratio: 5.1:1
See also
Comparable engines
Related lists
References
Notes
- "Plane landed in Cornwall after propeller fell off". BBC. 11 February 2016. Retrieved 11 December 2023.
- "AAIB investigation to Aeronca C3, G-AEFT". Air Accidents Investigation Branch. 11 February 2016. Retrieved 9 May 2024.
- Lumsden 2003, p.160.
Bibliography
- 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)
| J.A.P. aero engines | |
|---|---|
| Aeronca aero engines | |
|---|---|
|