"Tank Locomotives for the De Beers Mines, South Africa", Locomotive Magazine, Volume XXVI [26] (14 February 1920), p. 42.
Although relatively generous with the data, the LM report has scant additional information other than the number supplied to De Beers was "some".
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | unknown |
| Locobase ID | 20759 |
| Railroad | De Beers Consolidated Mines Ltd |
| Country | South Africa |
| Whyte | 2-6-2T |
| Number in Class | |
| Road Numbers | |
| Gauge | 3'6" |
| Number Built | |
| Builder | WG Bagnall |
| Year | 1919 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 8.75 / 2.67 |
| Engine Wheelbase (ft / m) | 20.75 / 6.32 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.42 |
| Overall Wheelbase (engine & tender) (ft / m) | 20.75 / 6.32 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 69,440 / 31,497 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 960 / 3.64 |
| 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) | 36.50 / 927 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 13.5" x 18" / 343x457 |
| Tractive Effort (lbs / kg) | 12,223 / 5544.27 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 142 - 1.625" / 41 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9 / 2.74 |
| Firebox Area (sq ft / m2) | 78.50 / 7.29 |
| Grate Area (sq ft / m2) | 14 / 1.30 |
| Evaporative Heating Surface (sq ft / m2) | 623 / 57.88 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 623 / 57.88 |
| Evaporative Heating Surface/Cylinder Volume | 208.92 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2240 |
| Same as above plus superheater percentage | 2240 |
| Same as above but substitute firebox area for grate area | 12,560 |
| Power L1 | 3315 |
| Power MT | |