Crankcase Sections
Crankcase is foundation of an engine. It contains the bearings and bearing supports in which the crankshaft revolves. C rankcase supporting itself and provide a tight enclosure for the lubricating oil and various external and internal mechanisms of the engine. Provides support for attachment of the cylinder assemblies, and the powerplant to the aircraft. Rigid and strong to prevent misalignment of the crankshaft and its bearings. Made of Cast or forged aluminum alloy because it is light and strong. Crankcase is subjected to many variations of mechanical loads and other forces. Since the cylinders are fastened to the crankcase, the tremendous forces placed on the cylinder tend to pull the cylinder off the crankcase. The unbalanced centrifugal and inertia forces of the crankshaft acting through the main bearings subject the crankcase to bend...