title: Farman 12We
text: # Farman 12We
  
  The Farman 12We was a French 12-cylinder broad arrow configuration aircraft engine that was designed and built by Farman in the early 1920s. Power output was 370 kilowatts (500 hp).
  
  ## Design and development
  
  The Farman company developed and produced aero engines from 1915; the 12We was the company's most produced engine. Following the cylinder layout of the Napier Lion this engine featured three banks of four cylinders and employed water cooling.
  
  The 12We was first flown in a Farman F.60 Goliath in October 1922 and later set a distance record powering a Farman F.62 in 1924, the engine ran continuously for 38 hours.
  
  ## Variants
  
  ### 12Wers
  
      with 0.5:1 reduction gear and KP24 supercharger.
  
  ## Applications
  
  * Breguet 19
  * Dewoitine D.14
  * Dornier Do J
  * Farman A.2
  * Farman F.60 Goliath
  * Farman F.62
  * Farman F.140 Super Goliath
  * Farman F.160
  * Farman F.170 Jabiru
  * Farman F.180
  * Farman F.1000
  * Latécoère 21
  * Latécoère 23
  * Latécoère 24
  * Latécoère 32
  * Latham 47
  * Lublin R-VIII
  * Potez 25
  * Potez 28
  
  ## Engines on display
  
  Preserved Farman 12We engines are on static display at the following museums:
  
  * Deutsches Museum Flugwerft Schleissheim
  * Polish Aviation Museum
  
  ## Specifications)
  
  Data from Gunston.
  
  ### General characteristics
  
  * Type: 12-cylinder water-cooled W-block (3 banks of 4 cylinders) aircraft piston engine
  * Bore: 130 mm (5.1 in)
  * Stroke: 160 mm (6.3 in)
  * Displacement: 25.48 L (1,555 cu in)
  * Dry weight: 470 kg (1,036 lb)
  
  ### Components
  
  * Valvetrain: Overhead valve
  * Cooling system: Water-cooled
  
  ### Performance
  
  * Power output: 373 kW (500 hp) at 2,150 rpm
  