Dundee Coal & Coke Ltd Beyer-Garratt Locomotives in South_Africa


Class Details by Steve Llanso of Sweat House Media

Class 5 (Locobase 538)

Data from "Dundee Coal Co., Ltd. South Africa-Design 1118", Beyer-Garrrat Patent Articulated Locomotives (Manchester, England: Beyer-Peacock & Company Limited, 1931), archived on flickr's Historical Railway Images at [], et seq, p. 52. Works number was 6353 in 1927.

This Prairie Garratt (works # 6353) went to a the Dundee Coal & Coke firm, which was in Natal State, Union of South Africa. BP's 1931 report said that this engine went to work on the 11-mile(17.7 km) line between the colliery and Waschbank Station on the Natal Main Line. Its right-of-way was laid with 60 lb/yard (30 kg/metre) rail, presented a ruling grade of 1 in 79 (1.27%) and curves as tight as 300 ft radius. Dundee reported that they'd fixed the trailing load at 1,250 short tons (1,116 long tons), which allowed the colliery to move its daily output of 5,000 tons with "practically half the number of trains."

Later the 5 moved on to the Transvaal Navigation Collieries.

Principal Dimensions by Steve Llanso of Middle Run Media

Class5
Locobase ID538
RailroadDundee Coal & Coke Ltd
CountrySouth Africa
Whyte2-6-2+2-6-2
Number in Class1
Road Numbers5
Gauge3'6"
Number Built1
BuilderBeyer, Peacock
Year1927
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)16 / 4.88
Engine Wheelbase (ft / m)35.50 / 10.82
Ratio of driving wheelbase to overall engine wheelbase 0.45
Overall Wheelbase (engine & tender) (ft / m)59.25 / 18.06
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)183,008 / 83,011
Engine Weight (lbs / kg)257,040 / 116,592
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)257,040 / 116,592
Tender Water Capacity (gals / ML)4200 / 15.91
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 7.40 / 6.70
Minimum weight of rail (calculated) (lb/yd / kg/m)51 / 25.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42.50 / 1080
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)17" x 22" / 432x559 (4)
Tractive Effort (lbs / kg)45,778 / 20764.58
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.00
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)171.50 / 15.93
Grate Area (sq ft / m2)41.90 / 3.89
Evaporative Heating Surface (sq ft / m2)2007 / 186.46
Superheating Surface (sq ft / m2)448 / 41.62
Combined Heating Surface (sq ft / m2)2455 / 228.08
Evaporative Heating Surface/Cylinder Volume173.63
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation7542
Same as above plus superheater percentage8900
Same as above but substitute firebox area for grate area36,427
Power L17607
Power MT549.83

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