Norte 4-6-2 Locomotives in Spain

Class 3000/231-4001 (Locobase 3362)

Data from [] . See also diagram UG Type 147, Societe Alsacienne de Constructions Mecaniques from locomotive book supplied by Dany Machi up at [] as Diagrammes des machines SACM construites a GRAFENSTADEN (October 2007); the Duke of Sarragossa, ME, "Pacific Type Express Locomotives for the Northern Railway of Spain,", Locomotive Magazine, Volume 18 (15 November 1912), p. 137; and Pere Comas and Alfred Puig, Breve Historia de la Traccion Vapor en Norte, Trensim TS10H001, Noviembre de 2010. Information on the Duque of Zaragoza from Juan Peris Torner's Compartir Cononcimientos blog at [] . Works numbers were 6236-6241 in 1911 and 6648-6657 in 1913.

The Duque de Zaragoza, a member of the Royal Family, was an active and valued member of the Norte's engineering staff. He was known as a strong proponent of compound expansion. His detailed article on the 3000 class was originally written in French.

Belpaire-boilered de Glehn compound designed to pull a 220-train train at 75 km/h (46.5 mph) on the flat and 35 km/h (21.7 mph) climbing a 1 1/2% grade. Comas and Puig tell us that their trials saw them handily exceed these requirements. Graced with "una elegancia de lineas tipica de este constructor" (an elegance of line typical of this [SACM] builder), the locomotives pulled 320 tons up a 0.9% grade at 60 km/h (37.3 mph) and exceeded 90 km/h (55.9 mph) on the flat with the same load.

Tube and flue diameters are interior measurement; external diameters were 55 mm (2.04") and 133 mm (5.24"), respectively.

(NB: El Duque de Zaragoza's full name was Don JosT Mencos Rebolledo de Palafox, Duque de Zaragoza, Marquis de Lazon, Conde de Los Arcos y Marquis de Caizar, Grande de Espana,)

Zaragoza observed that the Segovia route was "a very hard one". From Madrid to la Canada, which crossed the Guadarrama range, the line ascended 770 m (2,526 ft) in 98 km (60.9 miles)