Central de Aragon 2-6-0 Locomotives in Spain

Class Details by Steve Llanso of Sweat House Media

Class 21/130-2091 (Locobase 5523)

Data from [], the web site of the Spanish National Railway.(21 April 2003). Justo Arenillas in "Las locomotoras belgas en el Madrid-Caceres-Portugal", Lineas Del Tren (as reproduced on [], viewed 28 April 2003)

Arenillas commented that the design, although possessing small drivers to scale the steep grades that left the port of Escandon between Sagunto and Teruel, would be better regarded as mixed-traffic machines rather than purely freight engines.

Arenillas also observed that the look of these Belgian Moguls was "completely different, strange enough, and as a result much less elegant than the British Moguls" bought by other railroads capitalized by British money (the Lorca-Baza-Aguilas, Bobadilla-Algeciras, or the Santiago-Pontevedra & Carril).

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID5523
RailroadCentral de Aragon
Number in Class10
Road Numbers21-30/130-2091 a 130-2100
Number Built10
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.81 / 3.60
Engine Wheelbase (ft / m)18.70 / 5.70
Ratio of driving wheelbase to overall engine wheelbase 0.63
Overall Wheelbase (engine & tender) (ft / m)40.26 / 12.27
Axle Loading (Maximum Weight per Axle) (lbs / kg)27,558 / 12,500
Weight on Drivers (lbs / kg)81,571 / 37,000
Engine Weight (lbs / kg)104,279 / 47,300
Tender Loaded Weight (lbs / kg)79,366 / 36,000
Total Engine and Tender Weight (lbs / kg)183,645 / 83,300
Tender Water Capacity (gals / ML)3699 / 14.01
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 4.40 / 4
Minimum weight of rail (calculated) (lb/yd / kg/m)45 / 22.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)53.10 / 1349
Boiler Pressure (psi / kPa)142.10 / 9.80
High Pressure Cylinders (dia x stroke) (in / mm)18.7" x 23.62" / 475x600
Tractive Effort (lbs / kg)18,788 / 8522.10
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.34
Heating Ability
Tubes (number - dia) (in / mm)210 - 1.772" / 45
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12.80 / 3.90
Firebox Area (sq ft / m2)102.26 / 9.50
Grate Area (sq ft / m2)18.84 / 1.75
Evaporative Heating Surface (sq ft / m2)1349 / 125.25
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1349 / 125.25
Evaporative Heating Surface/Cylinder Volume179.67
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2677
Same as above plus superheater percentage2677
Same as above but substitute firebox area for grate area14,531
Power L13116
Power MT252.65

All material Copyright © SteamLocomotive.com
Wes Barris