Possible basic layout of a geared two cylinder 30cc engine. As shown the P&L, rods and carbs are based on A-90 items. The crankshaft shown is supported by 4 bearings with drum induction integral in the crank. The two cranks are geared together and are geared up so the seperate output shaft runs faster than the crankshafts so that conventional props can be used. The crankshafts run in reverse with the output shaft running in the conventional direction.
