The Franklin O-175 (company designation 4AC-176) was an American air-cooled aircraft engine of the 1940s. The engine was of horizontally-opposed four-cylinder and displaced . The power output was nominally . A later variant was designated O-180, despite sharing the same displacement. A related four-cylinder engine of slightly smaller capacity was known as the O-170 or 4AC-171. It produced .

Variants

O-170

;4AC-171:

O-175

;4AC-176: ::4AC-176-B - 65 hp (48 kW) at 2,200 rpm ::4AC-176-BA/(O-175-1) - 65 hp (48 kW) at 2,300 rpm ::4AC-176-C - 75 hp (56 kW) at 2,500 rpm ::4AC-176-D - 80 hp (60 kW) at 2,650 rpm ::4AC-176-F - 80 hp (60 kW) at 2,500 rpm ;4ACG-176

O-180

;4AC-176-F3 (O-180-1)

Applications

* Aeronca L-3D * Bowyer BW-1 flying wing * CAP-4 Paulistinha * Harris Little Jewel * Interstate Cadet * IPT-7 Junior *

Jensen Sport Jensen may refer to: People *Jensen (surname) *Jensen (given name) *Jensen (gamer), Danish professional ''League of Legends'' player Places Australia * Jensen Oval, Sydney, Australia, a soccer park * Jensen, Queensland, a suburb of Townsvill ...

(O-170) *

Langley Twin __NOTOC__ The Langley 2-4, variously described as the Langley Monoplane or Langley Twin was a twin-engine utility aircraft built in the United States in 1940. Named in honour of Samuel Pierpont Langley, the aircraft was designed to make use of no ...

Piper J-3 Cub The Piper J-3 Cub is an American light aircraft that was built between 1938 and 1947 by Piper Aircraft. The aircraft has a simple, lightweight design which gives it good low-speed handling properties and short-field performance. The Cub is Pi ...

Piper J-4 The Piper J-4 Cub Coupe is a two place side-by-side version of the Piper J-3 that was built between 1938 and 1942 by Piper Aircraft. It was Piper's first model with side-by-side seating; combined with docile low-speed handling, this made it a good ...

Piper L-4 The Piper J-3 Cub is an American light aircraft that was built between 1938 and 1947 by Piper Aircraft. The aircraft has a simple, lightweight design which gives it good low-speed handling properties and short-field performance. The Cub is Pi ...

Porterfield Collegiate __NOTOC__ The Porterfield Collegiate is an American-built two-seat training and touring monoplane built by the Porterfield Aircraft Corporation of Kansas City. Design Developed originally as the Porterfield Zephyr, under Approved Type Certificate ...

* Taylorcraft BF-60 (O-170) * Taylorcraft BF-65

Specifications (4AC-176-BA2, O-175-1)

References

;Notes ;Bibliography * Gunston, Bill. (1986) ''World Encyclopedia of Aero Engines''. Patrick Stephens: Wellingborough. p. 57 {{US military piston aeroengines Franklin aircraft engines 1940s aircraft piston engines Boxer engines