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 | |
|---|---|
| Class | 5 |
| Locobase ID | 538 |
| Railroad | Dundee Coal & Coke Ltd |
| Country | South Africa |
| Whyte | 2-6-2+2-6-2 |
| Number in Class | 1 |
| Road Numbers | 5 |
| Gauge | 3'6" |
| Number Built | 1 |
| Builder | Beyer, Peacock |
| Year | 1927 |
| Valve Gear | Walschaert |
| 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 / 1240 |
| 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 Volume | 173.63 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 7542 |
| Same as above plus superheater percentage | 8900 |
| Same as above but substitute firebox area for grate area | 36,427 |
| Power L1 | 7607 |
| Power MT | 549.83 |