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Franklin 4AC

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Template:Infobox Aircraft Engine

The Franklin 4AC (US military designations O-150, O-170, O-175, and O-200) was a series of air-cooled aircraft engines of flat-4 configuration produced in the 1930s and 40s.


  • 4AC-150 (O-150) - 40 hp (30 kW) at 1,875 rpm
  • 4AC-171 (O-170) - 60 hp (45 kW) at 2,350 rpm
  • 4AC-176 (O-175) - 65 hp (50 kW) at 2,300 rpm (models B, C), 80 hp (60 kW) at 2,500 rpm (models D, F)
  • 4AC-199 (O-200) - 90 hp (67 kW) at 2,500 rpm (direct drive), 113 hp (60 kW) at 3,500 rpm (geared)


Specifications (4AC-199, O-200)



Template:Franklin aeroengines

This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia article "Franklin 4AC".