Franklin O-425 Explained
The Franklin O-425 (company designation 6AG/6V6) was an American air-cooled aircraft engine that first ran in the mid-1940s. The engine was of six-cylinder, horizontally-opposed layout and displaced 425abbr=onNaNabbr=on. The power output was between 240abbr=onNaNabbr=on and 285abbr=onNaNabbr=on depending on variant. The O-405-13 (6V6-300-D16FT) of 1955 was a vertically mounted, turbocharged and fan cooled version for helicopters.
Variants
- 6AG6-245:Geared propeller drive at 0.623:1, 245abbr=onNaNabbr=on at 3,300 rpm, (XO-425-5).
- 6AGS6-245:Supercharged and geared, 250abbr=onNaNabbr=on at 3,200 rpm, (XO-425-3).
- 6V6-245-B16F:Vertically mounted, fan-cooled helicopter version, 245abbr=onNaNabbr=on at 3,275 rpm, (XO-425-1).
- 6V6-300-D16FT:Vertically mounted, turbocharged, fan-cooled helicopter version, 285abbr=onNaNabbr=on at 3,275 rpm, (O-425-13).
- O-425-1:
- O-425-2:
- O-425-3:
- O-425-5:
- O-425-9:
- O-425-13:
Applications
Further reading
- Book: Gunston, Bill . World Encyclopaedia of Aero Engines . Sutton Publishing . Stroud . 2006 . 5th . 978-0-7509-4479-3 .
- Book: Gunston, Bill . World Encyclopaedia of Aero Engines . 1989 . Patrick Stephens Limited . Cambridge, England . 978-1-85260-163-8 . 2nd .
- Book: Gunston, Bill . World Encyclopedia of Aircraft Manufacturers . Naval Institute press . Annapolis . 9781557509390 . 1993 .
