Franklin 8 series

8 series
Type 8-cyl. horizontally opposed air-cooled piston engine
National origin United States
Manufacturer Franklin Engine Company




The Franklin 8 series of 8-cylinder air-cooled horizontally opposed aircraft engines produced in the 1940s and 50s, (US military designation O-540 was applied to the 8ACG-538, 8ACSA-538 and 8ACGSA-538).

Variants

Data from:[1]

8AC-398
200 hp (149 kW) @ 2,600 rpm.
8ACG-398
235 hp (175 kW) @ 3,500 rpm. The 8ACG-398 was unusual in using a reduction gearing for take-off and direct drive for cruising.
8ACG-538
300 hp (224 kW) @ 3,200 rpm geared to 0.632 (XO-540-1)
8ACGSA-538
300 hp (224 kW) @ 3,200 rpm supercharged and geared to 0.632 (XO-540-3 and O-540-5)
8ACSA-538
300 hp (224 kW) supercharged (XO-540-7), powered the Northrop N-9MB.
O-540
Military designation for the 8ACG-538, 8ACSA-538 and 8ACGSA-538 engines

Applications

Data from:[2]

See also

Related development


Related lists

Notes

  1. ↑ "Franklin, Aircooled Motors, Doman-Marks (US); Franklin Aircraft Engines, WSK-PZL (Poland) Part 2: O-315 through O-805".
  2. ↑ "Franklin, Aircooled Motors, Doman-Marks (US); Franklin Aircraft Engines, WSK-PZL (Poland) Part 1: Introduction and O-110 through O-300".

References

Further reading

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