Data from [], last accessed 8 June 2006.
See Neill Mardell's SAR NG Class "The Lawleys" originally published in the May/June 1985 South African Railway Modelling Scene.
Also see [
Principal Dimensions by Steve Llanso of Sweat House Media | ||
---|---|---|
Class | F | NG6 Lawleys |
Locobase ID | 997 | 996 |
Railroad | Beira Railway | Beira Railway |
Country | Mozambique | Mozambique |
Whyte | 4-4-0 | 4-4-0 |
Number in Class | 4 | 9 |
Road Numbers | 261-263 | 261+ |
Gauge | 2' | 2' |
Number Built | 4 | 9 |
Builder | Falcon | Falcon |
Year | 1895 | 1897 |
Valve Gear | Stephenson | Stephenson |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 5.42 / 1.65 | 5.42 / 1.65 |
Engine Wheelbase (ft / m) | 12.37 / 3.77 | |
Ratio of driving wheelbase to overall engine wheelbase | 0.44 | |
Overall Wheelbase (engine & tender) (ft / m) | ||
Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
Weight on Drivers (lbs / kg) | ||
Engine Weight (lbs / kg) | 25,760 / 11,685 | 31,563 / 14,317 |
Tender Loaded Weight (lbs / kg) | 14,560 / 6604 | |
Total Engine and Tender Weight (lbs / kg) | 40,320 / 18,289 | |
Tender Water Capacity (gals / ML) | 600 / 2.27 | |
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) | 32 / 813 | 32 / 813 |
Boiler Pressure (psi / kPa) | 120 / 8.30 | 140 / 9.70 |
High Pressure Cylinders (dia x stroke) (in / mm) | 8" x 15" / 203x381 | 9" x 15" / 229x381 |
Tractive Effort (lbs / kg) | 3060 / 1387.99 | 4518 / 2049.33 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | ||
Heating Ability | ||
Tubes (number - dia) (in / mm) | ||
Flues (number - dia) (in / mm) | ||
Flue/Tube length (ft / m) | ||
Firebox Area (sq ft / m2) | 25 / 2.32 | 25 / 2.32 |
Grate Area (sq ft / m2) | 4.50 / 0.42 | 4.50 / 0.42 |
Evaporative Heating Surface (sq ft / m2) | 225 / 20.91 | 262 / 24.35 |
Superheating Surface (sq ft / m2) | ||
Combined Heating Surface (sq ft / m2) | 225 / 20.91 | 262 / 24.35 |
Evaporative Heating Surface/Cylinder Volume | 257.83 | 237.22 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 540 | 630 |
Same as above plus superheater percentage | 540 | 630 |
Same as above but substitute firebox area for grate area | 3000 | 3500 |
Power L1 | 2567 | 2616 |
Power MT |