Hirth F-263

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The Hirth F-263 is a twin cylinder, in-line, two stroke, carburetted aircraft engine that was designed for use on ultralight aircraft. The engine was discontinued about 2001.^[1]

Development

The F-263 uses fan cooling and piston-ported induction, with a single Bing carburetor and single capacitor discharge ignition. The cylinder walls are electrochemically coated with Nikasil. Standard starting is recoil start. A gearbox reduction drive system and electric start were factory options.^[1]

The engine produces 31 hp (23 kW) and runs on a 50:1 pre-mix of unleaded 93 octane auto fuel and oil. Recommended time between overhauls is 1000 hours.^[1]

Applications

Howland H-3 Pegasus^[2]
Falconar HM-293^[3]

Specifications (F-263)

Data from Cliche^[1]

General characteristics

Type: Twin cylinder, two-stroke, aircraft engine
Displacement: 383 cc (23.4 cu in)
Dry weight: 70 lb (31.8 kg)

Components

Valvetrain: piston-ported
Fuel system: 1 X Bing carburetor
Fuel type: unleaded 93 octane auto fuel
Oil system: 50:1 fuel/oil premix
Cooling system: fan forced air
Reduction gear: optional gearbox

Performance

Power output: 30 hp (22 kW)

References

↑ 1.0 1.1 1.2 1.3 Cliche, Andre: Ultralight Aircraft Shopper's Guide 8th Edition, page G-3 Cybair Limited Publishing, 2001. ISBN 0-9680628-1-4
↑ Ultralight Home Page (undated). "Ultralight/Microlight aircraft specs USA". Retrieved 2009-12-16. Check date values in: |date= (help)
↑ Fraser, Richard (2009). "Phillipe Balligand and his HM293". Retrieved 2009-12-16.

v t e Hirth and Heinkel-Hirth aircraft engines

Piston engines	HM 8 HM 60 HM 150 HM 500 HM 501 HM 504 HM 506 HM 508 HM 512 HM 515

Two-strokes	F-23 F-30 F-33 F-36 F-263 2702 2703 2704 2706 3002 3003 3202 3203 3502 3503 3701 3702 3703

Gas turbines	HeS 1 HeS 3 HeS 8 HeS 30 HeS 40 HeS 50 HeS 60 HeS 011

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