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. The engine was discontinued about 2001.[1]

Hirth F-263
Type Twin cylinder two-stroke aircraft engine
National origin Germany
Manufacturer Hirth
Unit cost US$2300 (base price 2000)


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]


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)



  • Power output: 30 hp (22 kW)

See also


  1. Cliche, Andre: Ultralight Aircraft Shopper's Guide 8th Edition, page G-3 Cybair Limited Publishing, 2001. ISBN 0-9680628-1-4
  2. Ultralight Home Page (n.d.). "Ultralight/Microlight aircraft specs USA". Retrieved 2009-12-16.
  3. Fraser, Richard (2009). "Phillipe Balligand and his HM293". Retrieved 2009-12-16.
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