Nickel chrome crank shaft.| | of propeller, with double thrust ball bearings. | Overhead valves. White metal bearings. | _Features._-- | Types B and D geared to half crank shaft speed. H.T. magneto. | | | Bosch dual ignition. Mechanical inlets. | [Illustration] | Pistons after uncovering exhaust ports open | Mechanical inlets. Forced lubrication. | | the inlet ports. Air from blowers | Forced lubrication. | | scavenges. Strong mixture enters | _Features._-- _Features._-- | | immediately on compression stroke. | Steel cylinders (single). | | This is effected by a central mechanism. | Overhead valves (removable seats). Steel cylinders (steel and copper jackets). | | | Carburettor between cylinders. Overhead vertical valves. | | (N.B. Older types see previous editions.) | Nickel chrome crank shaft, on 3 bearings. Cast-steel crank case. | | | Nickel chrome crank shaft, white metal | | [Illustration] | [Illustration] bearings. | | | --------------------------------------------------+----------------------------------------------------+-----------------------------------------------------------+---------------------------------------------------- ~FRENCH.~