De Beers Consolidated Mines Ltd 0-4-2 Locomotives in South_Africa
Class Details by Steve Llanso of Sweat House Media
Class Olive (Locobase 12593)
Data and information from the excellent "Old Steam Locomotives in South Africa" site, published by Leith Paxton & David Bourne, [
], last accessed 17 May 2011. Paxton and Bourne credit Sergio Paliaga with most of the information and Bryn Morgan for filling "some of the missing links". See also "Narrow Gauge Tank Locomotive for Kimberley Mines", Locomotive, Volume XVII (15 April 1911), p. 77. Works numbers were 1814-1817 in 1907.
The site shows Bagnall's description of the "Kimberley", noting that it was specially designed for narrow-gauge alignments of between 18" and 30" gauge. The well tank rode between the axles, the bunker over a radial truck. The authors note how large the locomotive is for a foot-and-a-half (457-mm) gauge - its extreme width was 6 ft 6 inches.
The engine was later preserved at "The Big Hole" museum dedicated to the Kimberley mines.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Olive |
| Locobase ID | 12593 |
| Railroad | De Beers Consolidated Mines Ltd |
| Country | South Africa |
| Whyte | 0-4-2WT |
| Number in Class | 4 |
| Road Numbers | |
| Gauge | 18 in |
| Number Built | 4 |
| Builder | WG Bagnall |
| Year | 1907 |
| Valve Gear | Bagnall Price |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5 / 1.52 |
| Engine Wheelbase (ft / m) | 8.83 / 2.69 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.57 |
| Overall Wheelbase (engine & tender) (ft / m) | 8.83 / 2.69 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 36,400 / 16,511 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 144 / 0.55 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 26 / 660 |
| Boiler Pressure (psi / kPa) | 140 / 970 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12" x 15" / 305x406 |
| Tractive Effort (lbs / kg) | 9886 / 4484.22 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 121 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 8.25 / 2.51 |
| Firebox Area (sq ft / m2) | 30 / 2.79 |
| Grate Area (sq ft / m2) | 7 / 0.65 |
| Evaporative Heating Surface (sq ft / m2) | 500 / 46.47 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 500 / 46.47 |
| Evaporative Heating Surface/Cylinder Volume | 254.65 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 980 |
| Same as above plus superheater percentage | 980 |
| Same as above but substitute firebox area for grate area | 4200 |
| Power L1 | 2008 |
| Power MT | |