Colotti-Francis

Colotti Trasmissioni (Colotti Transmission) is an Italian mechanical engineering firm located in Modena, Italy. It specializes in gears, limited-slip differentials and transmission systems for racing cars.

Valerio Colotti, who is famous as the chassis designer/engineer of Maserati 250F, started his own company called Tec-Mec in 1958. One of the first achievements was the design and manufacture of differential gear set/housing for Rob Walker, which solidified his reputation in the Grand Prix circles.

After building a GP car for Jean Behra, which became known as Behra-Porsche, Colotti built his own Grand Prix car named Tec-Mec F415, based on Maserati 250F in 1959, with Fritz d'Orey as the driver who finished 10th at 1959 French Grand Prix. At about the same time, Alf Francis, the Chief Engineer at Rob Walker Racing, started working with Colotti, changing the Tec-Mec name to Colotti-Francis.

Colotti-Francis was responsible for a Formula Junior car named T.C.A.(Trips Colotti Automobili) built for Graf von Trips, but this project ended with Trips' death at 1961 Italian Grand Prix held at Monza, where his Ferrari 156 collided with Jim Clark's Lotus 21, when a 3rd-place finish would have secured Count Trips the first ever Grand Prix World Championship title for a German, which did not materialize until 1994.

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