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 Middle Run Media | |
|---|---|
| Class | 31/020-0261 |
| Locobase ID | 5545 |
| Railroad | Central de Aragon |
| Country | Spain |
| Whyte | 0-4-0T |
| Number in Class | 2 |
| Road Numbers | 31-32/030-0261 a 030-0262 |
| Gauge | 5'6" |
| Number Built | 2 |
| Builder | Couillet |
| Year | 1903 |
| Valve Gear | Walschaert |
| 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 wheelbase | 1 |
| 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 / 1180 |
| 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 Volume | 187.70 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2303 |
| Same as above plus superheater percentage | 2303 |
| Same as above but substitute firebox area for grate area | 10,129 |
| Power L1 | 3392 |
| Power MT | 271.36 |