Fig. 197.—Application of R. E. P. Five-Cylinder Fan-Shape Air-Cooled Motor to Early Monoplane.
Fig. 198.—The Canton and Unné Nine-Cylinder Water-Cooled Radial Engine.
The method by which the piston strokes are made to occur at precise intervals involves a somewhat lengthy and detailed technical explanation. It is sufficient to say that an epicyclic train of gears, one of which is rigidly attached to the crank-case so it cannot rotate is used, while other gears make a connection between the fixed gear and with another gear which is exactly the same size as the fixed gear attached to the crank-case and which is formed integrally with the connecting rod carrier. The action of the gearing is such that the cage carrying the big end retaining pins does not rotate independently of the crank-shaft, though, of course, the crank-shaft or rather crank-pin bearings must turn inside of the big end carrier cage.
Fig. 199.—Sectional View Showing Construction of Canton and Unné Water-Cooled Radial Cylinder Engine.