Data from [] holding of Baldwin narrow-gauge export locomotives (visited 22 Feb 2003). See also DeGolyer, Vol 78, pp. 427+ and Vol 79, pp. 557+. Works number was 58850 in November 1925 and 60009 in May 1927.
This Mountain tank looks like a smaller edition of the North Natal Navigation Collieries Santa Fe tank profiled in Locobase 3249. Maximum grade on Vryheid's 60 lb/yard (30 kg/metre) rail was 1.67% and minimum curve radii was 300 feet (91.4 metres) or 19.1 degrees. The radial valve gear actuated 8" (203 mm) piston valves.
2 eventually served Coronation-Amalgamated's joint venture Blesbok Colliery in Mpumalanga after it opened in 1948 at the coal seam just south of Witbank and east of Pretoria.
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | 1 |
Locobase ID | 5406 |
Railroad | Vryheid Coronation, Ltd |
Country | South Africa |
Whyte | 4-8-2T |
Number in Class | |
Road Numbers | 1-2 |
Gauge | 3'6" |
Number Built | |
Builder | Baldwin |
Year | 1925 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 11.50 / 3.51 |
Engine Wheelbase (ft / m) | 28.25 / 8.61 |
Ratio of driving wheelbase to overall engine wheelbase | 0.41 |
Overall Wheelbase (engine & tender) (ft / m) | 28.25 / 8.61 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 120,100 / 54,477 |
Engine Weight (lbs / kg) | 168,100 / 76,249 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | |
Tender Water Capacity (gals / ML) | 2200 / 8.33 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3 / 3 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 50 / 25 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 42 / 1067 |
Boiler Pressure (psi / kPa) | 190 / 1310 |
High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 22" / 457x559 |
Tractive Effort (lbs / kg) | 27,409 / 12432.53 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.38 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 239 - 2" / 51 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 14 / 4.27 |
Firebox Area (sq ft / m2) | 105 / 9.75 |
Grate Area (sq ft / m2) | 30.20 / 2.81 |
Evaporative Heating Surface (sq ft / m2) | 1857 / 172.52 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 1857 / 172.52 |
Evaporative Heating Surface/Cylinder Volume | 286.59 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 5738 |
Same as above plus superheater percentage | 5738 |
Same as above but substitute firebox area for grate area | 19,950 |
Power L1 | 4889 |
Power MT | 358.98 |