Tanks in World War I
The continued need for four men to drive the tank was solved with the Mark V which used Wilson's epicyclic gearing in 1918. Also in 1918 the French produced the Renault FT, the result of a co-operation between Estienne and Louis Renault. As mentioned before, it had the innovative turret position, and was operated by two men. At just 8 tons it was half the weight of the Medium A "Whippet" but the version with the cannon had more firepower. It was conceived for mass production, and the FT became the most produced tank of World War I by a wide margin, with over 3,000 delivered to the French Army. Large numbers were used by the Americans and several were also lent to the British.
Praga RV
Praga RV engine had a cylinders work volume of 3468cc and supplied at 2600rpm. The fuel consumption was up to 35 liters per 100 km. The car had 3 axles, of which both back axles were driven. It had 4 gears and 1 reverse gear. The truck was rated for 2000 kg payload. The Praga RV was capable to travel at speed for 390 km without refueling of 137 liters fuel tank. When carrying infantry, typical capacity was 8-12 men, 7-11 in trunk and one in cabin besides driver. Also, it was capable to pull the 3-ton trailer. With trailer, Praga RV fuel consumption do increase to 49 liters per 100 km.