In 1967, the Moscow Experimental Mechanical Plant has mastered the small-scale production of swamp snowmobile B-1 "VITYAZ", prepared by the Special Design Office "Gazstroymashina "in collaboration with KB ZIL. An important feature of this vehicle - the low ground pressure - only 0.13 kg/cm2.In "VITYAZ" along each side instead of the usual track-circuits was are two rubber rope endless belt with the compounds in the form of forged steel.
Truckee are both supporting and leading elements of the caterpillars. Tapes are very strong - to break each of them to force at least 40 tons. To reduce the wear track and compensate for the difference between a step in their engagement with asterisks, stars made of rubber-cord. Road wheels on "VITYAZ" equipped car tires size 8.25 x15.
When create a design of this all-terrain vehicle used standard parts that have been applied at the time in automotive technology: the engine, cab, frame, gearbox, drive shaft, the conical couple of the main gear, body and brake chambers - the ZIL-130; spools pneumatic control - bus Zil-127 and so on. During the tests, "VITYAZ" showed higher permeability than some tracked vehicles.
However, it is not adapted to overcome water obstacles. In the winter "Knight" can move through the snow of any depth. B-1 is very good truck for the construction of the so-called winter roads for the first frost. Passing through the swamp, he squeezes out water that quickly freezes, forming ice, he can develop a speed of up to 27 kilometers per hour, and when moving through the marsh, deep snow - 10 miles per hour.