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 . The power output was between and depending on variant. The O-405-13 (6V6-300-D16FT) of 1955 was a vertically mounted, turbocharged and fan cooled version for helicopters.
Variants 6AG6-245Geared propeller drive at 0.623:1, at 3,300 rpm, (XO-425-5).
6AGS6-245Supercharged and geared, at 3,200 rpm, (XO-425-3).
6V6-245-B16FVertically mounted, fan-cooled helicopter version, at 3,275 rpm, (XO-425-1).
6V6-300-D16FTVertically mounted, turbocharged, fan-cooled helicopter version, 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 Convair XL-13 Republic YOA-15 (intended) Sikorsky S-52 Sikorsky YH-18 Stinson L-13
Specifications (O-425-5)
See also
References
Further reading