Hirth F-263
The Hirth F-263 is a twin cylinder, Inline [engine (aviation)|in-line], two stroke, carburetted aircraft engine that was designed for use on ultralight aircraft. It was manufactured by Hirth of Germany, but was discontinued about 2001.
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.The engine produces and runs on a 50:1 pre-mix of unleaded 93 octane [auto fuel] and oil. Recommended time between overhauls is 1000 hours.