CANNON !!

Cannon uses gunpowder or other explosive-based propellants to launch a projectile. The Jaivana cannon is the world's biggest wheeled cannon ever made. It is located in India. It was built in 1720, Jaivan rests on a high 4 wheeled carriage. The front wheels are 2.74 m in diameter and the rear wheels are 1.37 m in diameter. The length of the barrel of the cannon is 20 feet 2 inches and it weighs 50 tons. The circumference near the tip of the barrel is 7 feet 4 inches and that of the rear is 9 feet 4 inches. The diameter of the bore of the barrel is 11 inches and the thickness of the barrel at the tip is 8-1/2 inches. The thickness gradually increases towards the rear of the barrel. A 776 mm long elevating screw was used for raising and lowering the barrel. Reportedly, it took four elephants to swivel it around on its axis. The cannon uses about 100 kg of gun powder fired a shot ball weighing 50 kg. The uses and range of the cannon and cannonballs vary over different sources. Some say the Jaivana Cannon was only fired once by the Maharajah Jai Singh, as a test-fire in 1720. Others say that it was fired many times, indicated by the fire marks on the inside of the barrel. The most exaggerated was it had a range of 40 km with the Maharajah's test fire; other sources say it is 35, 22 and 11 km.