Madrid, Zaragoza & Alicante 4-6-4 Locomotives in Spain

Class 620/232-0201 (Locobase 3364)

Data from [], the web site of the Spanish National Railway and Maurice Demoulin, Locomotive Actuelle ... (Paris: Librairie Polytechnique Ch.Beranger, 1906), p 286.

Pere Comas, whose Paleontologia Vaporosa posts on the family tree of Spanish 4-8-0s are referenced in Locobase 3382, says MZA expresses still suffered from a shortage of power on the better than 1% grades they encountered. Such grades and the growing weight of the trains demanded double-heading by the 4-6-2 Pacifics and these "small, but strong" (pequenos pero bravas) "Cercanius Maffeirensis" tanks, which operated on the suburban Catalonian lines. The greater demands eventually led to the introduction of the 4-8-2 Mountains.

Demoulin describes the design, noting that it has a Belpaire firebox.

Class 632/232-0221 (Locobase 3365)

Data from [], the web site of the Spanish National Railway.

Pere Comas, whose Paleontologia Vaporosa posts on the family tree of Spanish 4-8-0s are referenced in Locobase 3382, says MZA expresses still suffered from a shortage of power on the better than 1% grades they encountered. Double-heading required by the 4-6-2 Pacifics and these "small, but strong" (pequenos pero bravas) "Cercanius Maffeirensis" tanks, which operated on the suburban Catalonian lines. The greater demands eventually led to the introduction of the 4-8-2 Mountains.