The Vincent Black Shadow was announced in February 1948 with a claimed top speed of 125 mph, roughly 201 km/h. That manufacturer’s promise gave the new model a distinctive place in postwar motorcycling. Vincent had already promoted its Rapide as a fast production motorcycle.
The 1952 Series C combined a 998 cc V-twin, about 55 horsepower and a four-speed gearbox. The engine and oil-tank structure provided mounting points for the suspension assemblies. Black enamel on the engine and an unusually large speedometer helped define the model’s appearance.
The launch unfolded in stages: research into factory records distinguishes the February 1948 prototype from the first production Black Shadow built in April. That detail traces the transition from a workshop development to a motorcycle offered to customers.