Franklin 2 series

The Franklin 2 series of American two-cylinder air-cooled horizontally opposed aircraft engines were produced in the 1930s and 1940s.

Variants
Data from:

O-110

 * 2A4-45:45 hp at 2,650rpm
 * 2A4-49:49 hp at 3,000rpm
 * 2A-110:60 hp at 3,000rpm
 * 2AL-112: alternative designation of the 2A4-45
 * PZL-F2A: The Franklin 2 series produced under licence in Poland

O-120

 * 2A-120:60 hp at 3,200rpm
 * PZL-F2A-120-C1:Production in Poland of the 2A-120

Applications
Data from:
 * Bellanca 7ACA Champion
 * Lockheed Little Dipper
 * PZL-126 Mrówka
 * Sportavia RF 5S
 * VTC SSV-17
 * Wallis WA-116/F
 * Wallis WA-121/F
 * WSK-PZL Krosno KR-02 Krokodyl
 * PZL SZD-45-2 Ogar