Central de Aragon 0-4-0 Locomotives in Spain


Class Details by Steve Llanso of Sweat House Media

Class 31/020-0261 (Locobase 5545)

Data from [], the web site of the Spanish National Railway. visited 21 April 2003.

This side tank had an unusually shaped boiler that had a great deal of tumblehome (the sides sloping inward from bottom to top).

Principal Dimensions by Steve Llanso of Sweat House Media

Class31/020-0261
Locobase ID5545
RailroadCentral de Aragon
CountrySpain
Whyte0-4-0T
Number in Class2
Road Numbers31-32/030-0261 a 030-0262
Gauge5'6"
Number Built2
BuilderCouillet
Year1903
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.20 / 2.50
Engine Wheelbase (ft / m) 8.20 / 2.50
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m) 8.20 / 2.50
Axle Loading (Maximum Weight per Axle) (lbs / kg)27,558 / 12,500
Weight on Drivers (lbs / kg)55,116 / 25,000
Engine Weight (lbs / kg)55,116 / 25,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)55,116 / 25,000
Tender Water Capacity (gals / ML)792 / 3
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 0.50
Minimum weight of rail (calculated) (lb/yd / kg/m)46 / 23
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)41.30 / 1050
Boiler Pressure (psi / kPa)171.10 / 11.80
High Pressure Cylinders (dia x stroke) (in / mm)13.39" x 18.11" / 340x460
Tractive Effort (lbs / kg)11,434 / 5186.38
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.82
Heating Ability
Tubes (number - dia) (in / mm)140 - 1.772" / 45
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.19 / 2.80
Firebox Area (sq ft / m2)59.20 / 5.50
Grate Area (sq ft / m2)13.46 / 1.25
Evaporative Heating Surface (sq ft / m2)554 / 51.50
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)554 / 51.50
Evaporative Heating Surface/Cylinder Volume187.70
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2303
Same as above plus superheater percentage2303
Same as above but substitute firebox area for grate area10,129
Power L13392
Power MT271.36

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