Design
In 1923 Marc de Caso designed the four cylinder compound pacific locomotive, with superheating, and a narrow firebox 3 m long. capable of output of 2,700 hp (2,000 kW). The appearance was due to Gaston Schaeffer who grouped all the outside pipes together and ran them along the boiler. Their boilers were superb, which is the reason why Andre Chapelon later based some of his locomotive boilers on this design.
The 231 C Nord 4-6-2, No 3. 1251—1290, was introduced in 1931 and it was built by Cail.
The locomotives were not equipped with mechanical stokers which made the job of the fireman harder as he had to throw the coal uniformly throughout the firebox. The cab was not enclosed, a characteristic found throughout the Chemin de Fer du Nord, and drivers gave it the nickname rendez-vous des courants d'air. The Nord specification tender was built to such a quality that the SNCF used the same design for its own tender locomotives twenty years later.
Read more about this topic: 231 C Nord
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