Weatherford, Mineral Wells & North Western 2-8-0 "Consolidation" Locomotives in the USA
Class Details by Steve Llanso of Sweat House Media
Class 4 (Locobase 15117)
Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 43, pp. 150+. See also Chris Cravens, "WEATHERFORD, MINERAL WELLS AND NORTHWESTERN RAILWAY," Handbook of Texas Online ([
]), accessed April 08, 2013. Published by the Texas State Historical Association. Works number 39341 in February 1913.
Cravens tells us that the WMW&NW was chartered on 2 July 1889 to build a 25-mile (40.3 km) railway from Weatherford, Tex (west of Fort Worth) west to Mineral Wells. After the T&P bought the Mineral Wells, it financed an 18-mile (29 km) extension to Graford, which lay northwest of Mineral Wells. The new section opened in 1908.
The WMW&NW never owned very many locomotives (three was the maximum at any one time), so the 4 pulled any kind of duty that seemed to be called for. It was finally retired in June 1938.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 4 |
| Locobase ID | 15117 |
| Railroad | Weatherford, Mineral Wells & North Western |
| Country | USA |
| Whyte | 2-8-0 |
| Number in Class | 1 |
| Road Numbers | 4 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1913 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 15.83 / 4.82 |
| Engine Wheelbase (ft / m) | 23.67 / 7.21 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.67 |
| Overall Wheelbase (engine & tender) (ft / m) | 51.92 / 15.83 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 132,000 / 59,874 |
| Engine Weight (lbs / kg) | 148,000 / 67,132 |
| Tender Loaded Weight (lbs / kg) | 90,000 / 40,823 |
| Total Engine and Tender Weight (lbs / kg) | 238,000 / 107,955 |
| Tender Water Capacity (gals / ML) | 4500 / 17.05 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 10 / 9 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 55 / 27.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 57 / 1448 |
| Boiler Pressure (psi / kPa) | 200 / 1380 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 20" x 26" / 508x660 |
| Tractive Effort (lbs / kg) | 31,018 / 14069.54 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.26 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 268 - 2.25" / 57 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 12.67 / 3.86 |
| Firebox Area (sq ft / m2) | 146 / 13.56 |
| Grate Area (sq ft / m2) | 29 / 2.69 |
| Evaporative Heating Surface (sq ft / m2) | 1912 / 177.63 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1912 / 177.63 |
| Evaporative Heating Surface/Cylinder Volume | 202.33 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5800 |
| Same as above plus superheater percentage | 5800 |
| Same as above but substitute firebox area for grate area | 29,200 |
| Power L1 | 5312 |
| Power MT | 354.88 |