Hornby Railroad Br Class The Kings Own Yorkshire Light InfantryThe production Deltics were a powerful Type 5 locomotive, designed for high speed express passenger services on the East Coast Main Line. When introduced in 1961, these were the most powerful diesel locomotives in the world. Powered by two big Napier diesel engines, these locomotives later known as Class 55s were capable of speeds of up to 117mph (188km h) and all were given names in the best tradition of East Coast express locomotives. Known