Rare WW2 KV-1S footage - КВ-1с серийный - Танк, танк клим ворошилов.

Rare WW2 KV-1S footage - КВ-1с серийный - Танк, танк клим ворошилов. является дальнейшим развитием серии тяжёлых танков КВ-1 The development of the KV-1S began after the two prototypes for the KV-3 were rejected. The Object 220 and 222 were based on a modified KV-1, the Object 220, had a longer hull, larger turret, and a 107 mm gun. The Object 222, was just a KV-1, but had a better turret layout. The KV-1 had serious weight problems and with each upgrade, it proofed to be still under-powered and the transmission proved often prone to break downs. The KV-1S needed to be much faster and lighter, so got a new gearbox, main clutch and improved engine, armor was reduced and a new cast turret was made thinner and it had smaller road wheels.