Several 4-8-4 Locomotives in Spain
Class Details by Steve Llanso of Sweat House Media
Class 242-0205/242-0211 y 242-221 (Locobase 3340)
Data from [
] and
[] (28 April 2003) reproduced the diagrama with all dimensions and weights ,
Four railroads bought locomotives of this exact design. Medina a Zamora y de Orense a Vigo (Oeste) obtained four (MTM works numbers 147, 149, 152, 163 in 1923), FC Estado 2, Alcaniz a Puebla de Hijar 1. and Murcia a Mula y Caravaca 1.
NB: RENFE's 1947 diagram shows the exterior diameter of the 143 small tubes and 22 large tubes, but gives the following heating surface areas based on the tubes' interior diameters: tubes and flues , 143.20 sq m (1,636 sq ft) and, including firebox area, 156.70 sq m (1,687 sq ft).
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 242-0205/242-0211 y 242-221 |
| Locobase ID | 3340 |
| Railroad | Several |
| Country | Spain |
| Whyte | 4-8-4T |
| Number in Class | 8 |
| Road Numbers | 965-968, 3 and 6, 1, 5/242-0205 a 242-0211 y0242 |
| Gauge | 5'6" |
| Number Built | 8 |
| Builder | MTM |
| Year | 1923 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 16.24 / 4.95 |
| Engine Wheelbase (ft / m) | 39.80 / 12.13 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.41 |
| Overall Wheelbase (engine & tender) (ft / m) | 39.80 / 12.13 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 33,069 / 15,000 |
| Weight on Drivers (lbs / kg) | 132,277 / 60,000 |
| Engine Weight (lbs / kg) | 216,053 / 98,000 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 216,053 / 98,000 |
| Tender Water Capacity (gals / ML) | 2859 / 10.83 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3.90 / 4 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 55 / 27.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 59.10 / 1501 |
| Boiler Pressure (psi / kPa) | 174 / 1200 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 21.65" x 25.59" / 550x650 |
| Tractive Effort (lbs / kg) | 30,017 / 13615.50 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.41 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 143 - 1.969" / 50 |
| Flues (number - dia) (in / mm) | 22 - 5.236" / 133 |
| Flue/Tube length (ft / m) | 15.75 / 4.80 |
| Firebox Area (sq ft / m2) | 145.31 / 13.50 |
| Grate Area (sq ft / m2) | 33.37 / 3.10 |
| Evaporative Heating Surface (sq ft / m2) | 1781 / 165.46 |
| Superheating Surface (sq ft / m2) | 490 / 45.52 |
| Combined Heating Surface (sq ft / m2) | 2271 / 210.98 |
| Evaporative Heating Surface/Cylinder Volume | 163.34 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5806 |
| Same as above plus superheater percentage | 7084 |
| Same as above but substitute firebox area for grate area | 30,846 |
| Power L1 | 10,874 |
| Power MT | 724.93 |