Rand Mines / South African Railways 0-4-2 Locomotives in South_Africa


Class Details by Steve Llanso of Sweat House Media

Class NG2 (Locobase 995)

Data from Wikipedia--[link] 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 NG93 was sold to the Zebediela citrus estates in northern Transvaal in 1937; it was withdrawn in 1943.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 , where it was finally withdrawn from service by 1943.[2][3]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
ClassNG2
Locobase ID995
RailroadRand Mines / South African Railways
CountrySouth Africa
Whyte0-4-2ST
Number in Class2
Road Numbers1288 / NG93-NG94
Gauge2'
Number Built2
BuilderDickson
Year1901
Valve GearStephenson
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 Volume428.81
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation758
Same as above plus superheater percentage758
Same as above but substitute firebox area for grate area4290
Power L14243
Power MT1044.00

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