Data from [], the web site of the Spanish National Railway and Pere Comas and Alfred Puig, Breve Historia de la Traccion Vapor en Norte, Trensim TS10H001, Noviembre de 2010, pp. 18, 78. Works numbers were 1184-1195 in 1882, 1251-1261 in 1883, and 1357 in 1884.
Comas and Puig note that this class was the first bogie engines in Spain with widely separated driving axles, which opened space for a deeper firebox. The layout also conferred a much more stable ride, which allowed an increase in allowed speed to 70 km/h (43.5 mph).
Nine of the class remained in service long enough to be taken in RENFE in 1941.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 71/220-2011 |
| Locobase ID | 3400 |
| Railroad | Asturias a Galicia y Leon (Norte) |
| Country | Spain |
| Whyte | 4-4-0 |
| Number in Class | 24 |
| Road Numbers | 71-94/220-2011 a 220-2019 |
| Gauge | 5'6" |
| Number Built | 24 |
| Builder | Hartmann |
| Year | 1882 |
| Valve Gear | Allan |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.22 / 2.20 |
| Engine Wheelbase (ft / m) | 19.52 / 5.95 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.37 |
| Overall Wheelbase (engine & tender) (ft / m) | 47.88 / 14.60 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 29,101 / 13,200 |
| Weight on Drivers (lbs / kg) | 58,202 / 26,400 |
| Engine Weight (lbs / kg) | 87,523 / 39,700 |
| Tender Loaded Weight (lbs / kg) | 54,322 / 24,640 |
| Total Engine and Tender Weight (lbs / kg) | 141,845 / 64,340 |
| Tender Water Capacity (gals / ML) | 2191 / 8.30 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 6.10 / 6 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 49 / 24.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 61 / 1550 |
| Boiler Pressure (psi / kPa) | 145 / 1000 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16.93" x 22.44" / 430x570 |
| Tractive Effort (lbs / kg) | 12,996 / 5894.89 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.48 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 212 - 1.969" / 50 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11.81 / 3.60 |
| Firebox Area (sq ft / m2) | 85.90 / 7.98 |
| Grate Area (sq ft / m2) | 21.96 / 2.04 |
| Evaporative Heating Surface (sq ft / m2) | 1247 / 115.87 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1247 / 115.87 |
| Evaporative Heating Surface/Cylinder Volume | 213.28 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3184 |
| Same as above plus superheater percentage | 3184 |
| Same as above but substitute firebox area for grate area | 12,456 |
| Power L1 | 4227 |
| Power MT | 320.23 |