title: Sauer S 1800
text: # Sauer S 1800
  
  The Sauer S 1800 is a family of German four-stroke aircraft engines, certified according to JAR 22-H (CS-22 subpart H)
  
  ## Design and development
  
  The engine is based on the Volkswagen air-cooled engine, extensively modified for aircraft use and all the parts are custom made. They are certified according to CS-22 subpart H and can therefore be used in motorgliders and light aircraft that are certified as CS-VLA and CS-LSA
  
  ## Applications
  
  * AMS Carat
  
  ## Specifications
  
  ### General characteristics
  
  * Bore: 90mm
  * Stroke: 69mm
  * Displacement: 1754cc
  * Dry weight: 63 kg
  
  ### Components
  
  * Valvetrain: Single overhead exhaust valve, single overhead inlet valve per cylinder
  * Fuel system: Bing carburetor with altitude compensation
  * Fuel type: min 95 RON
  * Cooling system: Air-cooled
  
  ### Performance
  
  * Power output: 60hp at 3000 rpm
  * Compression ratio: 8.5:1
  