Cape Government 2-6-0 Locomotives in South_Africa


Class Details by Steve Llanso of Sweat House Media

Class Class 01 (Locobase 4905)

Data from D F Holland, Steam Locomotives of the South African Railroads, Volume I: 1859-1910 (New York: Drake Publishers, 1972), p. 29. Works numbers were 1571-1580. Also see [] comes the account of these Mogul tender engines.

Obviously very small engines, these only hinted at the powerful narrow-gaugers to come; later engines with inclined cylinders appear in Locobase 12866. According to Holland, the class proved quite versatile, seeing service "...on all parts of the Western systems from Cape Town right up into the Karoo and, while considered as goods locomotives, were used on all classes of traffic, as well as shunting.

At Union (1910), this class was grouped with several other odds and ends under the Class 01 heading.


Class Class 01 (Locobase 12866)

Data from D F Holland, Steam Locomotives of the South African Railroads, Volume I: 1859-1910 (New York: Drake Publishers, 1972), p. 29. Works numbers were 1844-1849, 2026-2027, and 2039-2040.

Essentially repeats of the 1875 Beyers, this class had inclined cylinders and very slightly longer tubes.


Class Class 01 (Locobase 20239)

Data from D F Holland, Steam Locomotives of the South African Railroads, Volume I: 1859-1910 (New York: Drake Publishers, 1972), p. 29. Works numbers were 1844-1849, 2026-2027, and 2039-2040.

Essentially repeats of the 1875 Beyers, this class had inclined cylinders and very slightly longer tubes.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassClass 01Class 01Class 01
Locobase ID4905 12866 20239
RailroadCape GovernmentCape GovernmentCape Government
CountrySouth AfricaSouth AfricaSouth Africa
Whyte2-6-02-6-02-6-0
Number in Class10108
Road NumbersW7-W16W27-W32, W39-W42M17-M24
Gauge3'6"3'6"3'6"
Number Built10108
BuilderBeyer, PeacockBeyer, PeacockKitson & Co
Year187518791876
Valve GearStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.17 7.17 / 2.19 7.17 / 2.19
Engine Wheelbase (ft / m)10.7510.75 / 3.2810.75 / 3.28
Ratio of driving wheelbase to overall engine wheelbase 0.67 0.67 0.67
Overall Wheelbase (engine & tender) (ft / m)37.67 / 11.4837.67 / 11.4837.67 / 11.48
Axle Loading (Maximum Weight per Axle) (lbs / kg)12,544 / 562511,928 / 541011,928 / 5410
Weight on Drivers (lbs / kg)36,62435,980 / 16,32035,980 / 16,320
Engine Weight (lbs / kg)44,968 / 20,41245,444 / 20,61345,444 / 20,613
Tender Loaded Weight (lbs / kg)39,98439,984 / 18,13639,984 / 18,136
Total Engine and Tender Weight (lbs / kg)84,952 / 20,41285,428 / 38,74985,428 / 38,749
Tender Water Capacity (gals / ML)20402040 / 7.732040 / 7.73
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 2.80 2.80 / 3 2.80 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)20 / 1020 / 1020 / 10
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)39 / 99139 / 99139 / 991
Boiler Pressure (psi / kPa)130 / 9130 / 9140 / 9.70
High Pressure Cylinders (dia x stroke) (in / mm)12" x 20" / 305x50812" x 20" / 305x50812" x 20" / 305x508
Tractive Effort (lbs / kg)8160 / 3701.328160 / 3701.328788 / 3986.17
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.49 4.41 4.09
Heating Ability
Tubes (number - dia) (in / mm)116 - 1.75" / 0116 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.44 9.56 / 2.91 9.56 / 2.91
Firebox Area (sq ft / m2)4444 / 4.0949 / 4.55
Grate Area (sq ft / m2) 9.50 / 0.88 9.50 / 0.8810 / 0.93
Evaporative Heating Surface (sq ft / m2)536 / 49.81545 / 50.65532 / 49.42
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)536 / 49.81545 / 50.65532 / 49.42
Evaporative Heating Surface/Cylinder Volume204.74208.17203.21
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation123512351400
Same as above plus superheater percentage123512351400
Same as above but substitute firebox area for grate area572057206860
Power L1244024692701
Power MT440.64453.85496.50

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