Franklin 4A-235-B3 is a four cylinder, four stroke, clockwise rotation, air-cooled piston engine, designed for light aircraft operation and used as direct drive power unit.

POWER AND ROTATION:
Take off: 123 hp at 2800 r.p.m.
Max. Continuous: 123 hp at 2800 r.p.m.
COMPRESSION RATIO: 8,5:1
DISPLACEMENT: 235 inch3
RPM MAXIMUM LIMIT: 2800 r.p.m.
RPM IDLE: 750-950 r.p.m.
WEIGHT OF DRY ENGINE: 104,3 kg