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Hirth F-263

 

The Hirth F-263 is a twin cylinder, in-line, two stroke, carburetted aircraft engine that was designed for use on ultralight aircraft. Base price in 2000 was US$2300 but the engine was discontinued about 2001.

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.
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.

 

Applications:
Howland H-3 Pegasus
Falconar HM-293

 

Specifications:
F-263
Type: Twin cylinder, two-stroke, aircraft engine
Displacement: 383 cc (23.4 cu in)
Dry weight: 70 lb (31.8 kg)
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
Power output: 30 hp (22 kW)

 

 


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