Praga V3S
There are two twin assembled drive beam axles at the rear. Their differentials are powered from the gearbox via cardan shafts. Differentials are fitted with axle locks controlled mechanically from the driver,s seat what allows prevention of the tire spinning on one side, so the truck can be relieved. Momentum from the differential is leaded via half-axle into the wheel reduction which is step-down gear. It allows increase of momentum and increase of clear height (the wheel on axle is offset downwards, Front and Rear Portal Axle) Momentum from there is leaded towards the wheel hub where there is wheel there. Front beam axle is driving and the axle shaft is furnished with kinetic joints due to steering. Wheel reduction is fixed on swivel pin and powered by the mentioned axle shaft. Wheel reductions are connected via connecting rod with two units of ball pivots due to steering. The axle has no axle lock and is also powered via cardan. Transition: Primary gearbox is four gears, no synchronized, mechanically engaged. The last gear is engaged by the jaw clutch. Engagement is provided by the three sliding forks. First fork is for reverse, second for the first and second gear and third for the third and fourth gear. The forks slide on the three guiding bars. Primary gearbox is tied together with reduction gearbox, which allows to engage terrain reduction, only front axle reduction and eventually the auxiliary driving systems (winch, generator or pump). Everything is mechanically engaged.