The Mistral company introduced a range of four motor ploughs in the 1920s: the DC for large-scale cultivations, the 1.35 m wide DCV for use with cereal crops and vineyards, the 0.88 m wide DV for vineyard use only, and the 0.72 m wide Type E. The first three of these were equipped with a 30 hp engine and 1.5 m diameter rear wheels, while the Type E had a 12 hp engine and 1 m diameter wheels. Alongside these machines, Mistral also offered a conventional four-wheeled general-purpose tractor, the Type C, with a 30 hp engine. Towards the end of the 1920s, Mistral also built an unusual six-wheeled tractor, the Type F, which was demonstrated at the Buc trials in October 1928 and used a four-cylinder paraffin engine. This tractor resembled superficially the Scemia, in that the front axle was set quite far forward of the radiator. Its unique feature, however, was the two extra wheels placed between the rear wheels underneath the driving position, which the publicity of the time described as "variable depth wheels". These could be retracted using a wheel brace and were provided with plates desgined to increase traction. In addition, independent brakes were also provided on the main rear wheels to increase the manoeuvrability of the tractor. It is not known how sucessful this novel design proved, although the Mistral tractors disappeared for good in the 1930s.

(Click on images below to enlarge)

Mistral Type F (serial no. 181) minus the extra rear wheels at the Musee Maurice Dufresne, Azay-le-Rideau, France in 2007.


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