Consolidated Main Reef Mine Beyer-Garratt Locomotives in South_Africa
Class Details by Steve Llanso of Sweat House Media
Class 2 (Locobase 537)
Data from Gavin Hamilton's excellent compilation of Garratt data posted at [
] (6 September 2005); and A[rthur] E[dward] Durrant, Garratt Locomotives of the World (revised edition) (Newton Abbott, UK: David & Charles, 1981), p. 143. Works number was 6780 in 1935.
Prairie Garratt (works # 6780) for a mine located in Langlaagte,Transvaal State, Union of South Africa Durrant speculated that the 2 "may have been too powerful"; the CMRM soon sold the engine to New Raleigh Colliery, then by the New Clydesdale Colliery until scrapped in 1978.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 2 |
| Locobase ID | 537 |
| Railroad | Consolidated Main Reef Mine |
| Country | South Africa |
| Whyte | 2-6-2+2-6-2 |
| Number in Class | 1 |
| Road Numbers | 2/1/5 |
| Gauge | 3'6" |
| Number Built | 1 |
| Builder | Beyer, Peacock |
| Year | 1935 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 31,360 / 14,225 |
| 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) | |
| Tender Water Capacity (gals / ML) | 4200 / 15.91 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 7.70 / 7 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 51 / 25.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 42 / 1067 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 22" / 432x559 (4) |
| Tractive Effort (lbs / kg) | 46,323 / 21011.78 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.95 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 172 / 15.99 |
| Grate Area (sq ft / m2) | 41.90 / 3.89 |
| Evaporative Heating Surface (sq ft / m2) | 2007 / 186.52 |
| Superheating Surface (sq ft / m2) | 448 / 41.64 |
| Combined Heating Surface (sq ft / m2) | 2455 / 228.16 |
| 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 | 36,533 |
| Power L1 | 7520 |
| Power MT | 543.54 |