Data from Lionel Wiener, "Note sur les locomotives articuleees", Excepted from Revue Generale des Chemins de fer et des Tramways (May-June 1903), p. 22; and
Although the SAR's articulated locomotives were chiefly of the Garratt or Mallet layout, a few classes used other forms. This present group used the Kitson-Meyer arrangement of both sets of drivers leading their cylinders under a common frame and boiler with Belpaire firebox. Each engine unit pivoted on a center post as near as possible to the center of the unit; the two pivots were set 25 ft 6 in (7.77 m) apart. The engine steamed poorly and were retired after only a few years.
Principal Dimensions by Steve Llanso of Sweat House Media | |
|---|---|
| Class | KM |
| Locobase ID | 3625 |
| Railroad | Central South African (SAR) |
| Country | South Africa |
| Whyte | 0-6-0+0-6-0T |
| Number in Class | 1 |
| Road Numbers | 1600 |
| Gauge | 3'6" |
| Number Built | 1 |
| Builder | Kitson & Co |
| Year | 1904 |
| Valve Gear | Trick |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 17 / 5.18 |
| Engine Wheelbase (ft / m) | 34 / 10.36 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.50 |
| Overall Wheelbase (engine & tender) (ft / m) | 34 / 10.36 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 33,160 / 15,041 |
| Weight on Drivers (lbs / kg) | 188,720 / 85,602 |
| Engine Weight (lbs / kg) | 188,720 / 85,602 |
| Tender Loaded Weight (lbs / kg) | 84,780 / 38,456 |
| Total Engine and Tender Weight (lbs / kg) | 273,500 / 124,058 |
| Tender Water Capacity (gals / ML) | 3600 / 13.64 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 6.60 / 6 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 52 / 26 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 48 / 1219 |
| Boiler Pressure (psi / kPa) | 185 / 12.80 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 24" / 406x610 (4) |
| Tractive Effort (lbs / kg) | 40,256 / 18259.84 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.69 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 239 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 12 / 3.66 |
| Firebox Area (sq ft / m2) | 135.60 / 12.60 |
| Grate Area (sq ft / m2) | 34 / 3.16 |
| Evaporative Heating Surface (sq ft / m2) | 1862 / 172.99 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1862 / 172.99 |
| Evaporative Heating Surface/Cylinder Volume | 166.69 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 6290 |
| Same as above plus superheater percentage | 6290 |
| Same as above but substitute firebox area for grate area | 25,086 |
| Power L1 | 3365 |
| Power MT | 235.86 |