Franklin O-225 Explained

The Franklin O-225 (company designation 4A/4A4) was an American air-cooled aircraft engine that first ran in the mid-1940s. The engine was of four-cylinder, horizontally-opposed layout and displaced 225abbr=onNaNabbr=on. The power output was between 75abbr=onNaNabbr=on and 125abbr=onNaNabbr=on depending on the version.

Variants

4A4-75:75abbr=onNaNabbr=on at 1,950 rpm

4A4-85:85abbr=onNaNabbr=on at 2,200 rpm

4A4-100:100abbr=onNaNabbr=on at 2,550 rpm

4A-225:100abbr=onNaNabbr=on at 2,800 rpm

Applications

• Cessna 160
• Bendix 51
• Bendix 52
• Bendix 55
• Dansaire Coupe
  • Eshelman Winglet Government Workshops Triciclo-Experimental

References

Notes

Bibliography

• Gunston, Bill. (1986) World Encyclopedia of Aero Engines. Patrick Stephens: Wellingborough. p. 57