Data from Wikipedia--[] 12/12/12,
JF Webber's list of Dickson locomotives (conveyed to Locobase by Allen Stanley in March 2004) gives the works numbers as 1288 (May 1901).
Arthur Koppel (of Berlin) ordered several of these Scranton (Pa)-built saddle tanks between 1897 and 1902 for delivery to South African gold mines. Most were built to the same design, although the data are only certain for the two shown here and one other that joined them at Lancaster Gold Mine in Roodepoort.
To further operations on the 600-mm gauge railways of Deutsch-Sndwest-Afrika (DSWA), later Namibia, the South African government bought these two locomotives. In the 1920s, the SAR put new boilers on the engines and added a two-axle tender.
After their careers ended at the SAR's Usakos workshops, the two went different ways. NG93 was sold to the Zebediela citrus estates in northern Transvaal in 1937; it was withdrawn in 1943. NG94 went further and lasted longer. It was sold to Igusi Timbers in Rhodesia where it ran until 1961. . , where it was finally withdrawn from service by 1943.[2][3]
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | NG2 |
Locobase ID | 995 |
Railroad | Rand Mines / South African Railways |
Country | South Africa |
Whyte | 0-4-2ST |
Number in Class | 2 |
Road Numbers | 1288 / NG93-NG94 |
Gauge | 2' |
Number Built | 2 |
Builder | Dickson |
Year | 1901 |
Valve Gear | Stephenson |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 4 / 1.22 |
Engine Wheelbase (ft / m) | 10.37 / 3.16 |
Ratio of driving wheelbase to overall engine wheelbase | 0.39 |
Overall Wheelbase (engine & tender) (ft / m) | 10.37 / 3.16 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 8960 / 4064 |
Weight on Drivers (lbs / kg) | 17,920 / 8128 |
Engine Weight (lbs / kg) | 24,640 / 11,177 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | 24,640 / 11,177 |
Tender Water Capacity (gals / ML) | 240 / 0.91 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 0.50 / 1 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 15 / 7.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 24.50 / 622 |
Boiler Pressure (psi / kPa) | 130 / 900 |
High Pressure Cylinders (dia x stroke) (in / mm) | 7" x 10" / 178x254 |
Tractive Effort (lbs / kg) | 2210 / 1002.44 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 8.11 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 60 - 1.5" / 38 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 6.75 / 2.06 |
Firebox Area (sq ft / m2) | 33 / 3.07 |
Grate Area (sq ft / m2) | 5.83 / 0.54 |
Evaporative Heating Surface (sq ft / m2) | 191 / 17.74 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 191 / 17.74 |
Evaporative Heating Surface/Cylinder Volume | 428.81 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 758 |
Same as above plus superheater percentage | 758 |
Same as above but substitute firebox area for grate area | 4290 |
Power L1 | 4243 |
Power MT | 1044.00 |