The Especialidades Mecánicas Sato workshops, based at Calle Goya no. 79 in Madrid, were owned by Juan Torres Martán.
In October 1952 Ardilla of Barcelona ceased production and the works were moved in December to Madrid, with the name changed to "Raid". In 1954 the motorcycles were completely redesigned by Natalio Horcajo García, and were fitted with a new engine and suspension. These were built until 1956, and the results were widely acclaimed.
In 1955-56 Senor Garcia was involved with the development of the IMFAP microcar, with two prototypes fitted with 372cc Raid twins.
In 1956 the Sato workshops returned to Barcelona. Motorcycle production continued until 1962, by which time they were using a modified chassis and Hispano Villiers engines.
Sources: Autopasion18.com; https spanish.motorcycles; et al.
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