1973 March 73S

British manufacturer and Formula One constructor, March Engineering began operation in 1969 by its four founders, Max Mosley, Alan Rees, Graham Coaker, and Robin Herd. The name 'March' was chosen by using initials from their first or last names. Each of these individuals brought unique qualities and talents to the team. Herd was the designer, Rees was the team's manager, Coaker oversaw production, and Mosley handled the commercial side of the operation.

The purpose of the company was to provide chassis for customers competing in all racing categories. In 1969 the company built a Formula 3 car. A year later, they produced an F1 racer, the 701, which they used for team competition and to supply to privateers. In the non-championship Race of Champions, Jackie Stewart gave March its first F1 victory. He won the Spanish Grand Prix a month later.

In the years to come, the company would become more successful in more classes, except for the F1 program, than any other manufacturer. Their products appeared in Formula 2, Formula 3, Formula Ford 1600, and CanAm.

Although March had a surplus of BMW M-12 engines, the 73S chassis was also powered by Cosworth and Abarth engines. The M-12 engine, which was an evolution of the early 1960s M10 unit, produced around 300 horsepower.

Although the 73S does not have under-car aerodynamics, it did employ several other aerodynamic features such as a rear wing, front splitter, and wedge-shaped bodywork. The fiberglass body clothed the alloy tub and magnesium bulkhead. Magnesium was also used for the wheels and the uprights. The suspension was comprised of wishbones with outboard springs and dampers. The rear brakes were inboard.

By Daniel Vaughan | Feb 2017