The British experts assess the German Beetle first negative. Anyway, they do not give it much attention. This can not be said of the responsible for the to 80 percent destroyed factory. Here are the senior officer, Major Ivan Hirst, who put much effort into cleaning up and the resumption of production. This reached in March 1946 1,000 pieces.
Up to some already in parts existing models shortly after the War II, all Beetles will be equipped with the more powerful engine of the former Kommandeurswagen (commander car). It is always the same four-stroke engine, each withtwo opposed cylinders whose pistons alternately move toward away from each other (Boxer engine).
A longitudinally divided into two parts crankcase made of aluminum magnesium alloy (electron) contains above the crankshaft and below the cast iron camshaft. Each two single cylinders from gray cast will be supported on this casing, each by a cylinder head made of aluminum alloy on each engine side with eight studs. In particular, the cylinder is due to the air-blower cooling, heavily ribbed. The crankshaft drop-forged of a block has a center bearing and at the front end two instead of one main bearing.
The camshaft at the bottom drives with each cam two tappets on the right and left. These transmit the movement through tappets to rockers in the cylinder heads. Tappet protective tubes, the elongated before mounting the cylinder heads and will be provided with extra soft seals, lead oil from the heads back to the oil sump. The cylinder head screws also ensure here for the corresponding squeezing and hence tightness. The cylinder head screws also here ensure for the corresponding crushing pressure and hence tightness. In the cylinder head, there are shrunken valve seat rings and valve guides depending on the heat of iron or copper alloy.
In the cylinders steel lamination pistons made of aluminum are heat-regulated. They are connected with the crankshaft by forged conrods. The lubrication happens through spray nozzles at the connecting rod. To the cylinder heads the oil flows through the push rods made of light metal. Outwardly, the rooms of the rocker shaft are sealed by the sheet metal caps, with its cork seals are kept through almost without tools foldaway spring clips.
Figure 3 above shows clearly the left, partially cut side of the cylinder. So the rocker shaft will be visible with the two valves of the fourth cylinder. Even the valve adjustment screws can be seen. At the carburetor, the intake pipe ends in the middle between the two cylinders and divides only in the cylinder head. Right and left flows out the exhaust. The exhaust pipes of the front cylinders additionally increase the temperature of the cooling air, which subsequently will be used for interior heating.
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