Data from [], the web site of the Spanish National Railway. See also the PDF of the Via Libre's Material Motor series, accessed as [] on 4 March 2007. Works numbers were 204-209 in 1925.
Delivered to the S-FP in 1925, this class of Mikado tanks proved too heavy for the right of way and were soon sent to la Compa'fa de de los Ferrocarriles de Madrid a Cáceres y Portugal, where they were renumbered 651-656. But financial strains in the latter company led in 1928 to their being taken over by the Oeste, where they were renumbered again to 851-856.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 141-0211 |
| Locobase ID | 3377 |
| Railroad | Salamanca-Frontera Portuguesa (SFP) |
| Country | Spain |
| Whyte | 2-8-2T |
| Number in Class | 6 |
| Road Numbers | 851-856/141-0211 a 141-0216 |
| Gauge | 5'6" |
| Number Built | 6 |
| Builder | MTM |
| Year | 1931 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 16.49 / 5.03 |
| Engine Wheelbase (ft / m) | 33.71 / 10.28 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.49 |
| Overall Wheelbase (engine & tender) (ft / m) | 33.71 / 10.28 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 28,660 / 13,000 |
| Weight on Drivers (lbs / kg) | 114,640 / 52,000 |
| Engine Weight (lbs / kg) | 168,653 / 76,500 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 2640 / 10 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 5.50 / 5 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 48 / 24 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 61 / 1550 |
| Boiler Pressure (psi / kPa) | 171.10 / 1180 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 19.69" x 25.59" / 500x650 |
| Tractive Effort (lbs / kg) | 23,654 / 10729.29 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.85 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 121 - 1.969" / 50 |
| Flues (number - dia) (in / mm) | 21 - 5.236" / 133 |
| Flue/Tube length (ft / m) | 13.91 / 4.24 |
| Firebox Area (sq ft / m2) | 107.64 / 10 |
| Grate Area (sq ft / m2) | 27.77 / 2.58 |
| Evaporative Heating Surface (sq ft / m2) | 1265 / 117.50 |
| Superheating Surface (sq ft / m2) | 350 / 32.50 |
| Combined Heating Surface (sq ft / m2) | 1615 / 150 |
| Evaporative Heating Surface/Cylinder Volume | 140.27 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4751 |
| Same as above plus superheater percentage | 5797 |
| Same as above but substitute firebox area for grate area | 22,469 |
| Power L1 | 9554 |
| Power MT | 734.92 |