Data from "Dickson Engines for South Africa", Railway & Locomotive Engineering, Vol XIII, No. 1 (January 1900), p. 3. See also Jim Peden, Letter in response to "The origins of Orenstein & Koppel", Industrial Railway Record, #46 (February 1973), pp. 361-371.
These are almost certainly the 4 locomotives with works numbers 1079-1082 that were ordered by Arthur Koppel for export to the Cape Collieries in J F Webber's list of Dickson locomotives. According to a the letter in the IRR, the four locomotives were named J S Smit, J J Speier, L J Meyer, and C Birkenstock. If these are the engines, then they were taken over by the Cape Government Railways practically upon delivery to the continent and renumbered 50-53.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 1 |
| Locobase ID | 10807 |
| Railroad | Dundee-Vryheid |
| Country | South Africa |
| Whyte | 2-6-0T |
| Number in Class | 4 |
| Road Numbers | 1-4 / 50-53 |
| Gauge | 3'6" |
| Number Built | 4 |
| Builder | Dickson |
| Year | 1899 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 12.50 / 3.81 |
| Engine Wheelbase (ft / m) | 19 / 5.79 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.66 |
| Overall Wheelbase (engine & tender) (ft / m) | 19 / 5.79 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 62,000 / 28,123 |
| Engine Weight (lbs / kg) | 73,000 / 33,112 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1000 / 3.79 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.60 / 2 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 34 / 17 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 44 / 1118 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14" x 20" / 356x508 |
| Tractive Effort (lbs / kg) | 13,631 / 6182.92 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.55 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 168 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9.54 / 2.91 |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | |
| Evaporative Heating Surface (sq ft / m2) | |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | |
| Evaporative Heating Surface/Cylinder Volume | |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | |
| Same as above plus superheater percentage | |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |