Data from Baldwin Locomotive Works, Record of Recent Construction ((1903), No. 31, p. 30-31. See also DeGolyer, Volume 39, p. 297. Works numbers were 19456 in August 1901, 19649-19650 in October 1901. Much later the South African Railways added 36375, which was produced in April 1911.
Compared to other 2-foot Moguls, this was a powerhouse design with a big firebox. The 1911 spec state that these engines burned "colonial coal", 1 pound of which "evaporate[d] 5 1/2 lb of water."
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | 1 / NG7 |
Locobase ID | 984 |
Railroad | Hopefield (SAR) |
Country | South Africa |
Whyte | 2-6-0 |
Number in Class | 4 |
Road Numbers | 1-4/NG22-NG24, NG35 |
Gauge | 2' |
Number Built | 4 |
Builder | Burnham, Williams & Co |
Year | 1901 |
Valve Gear | |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 7 / 2.13 |
Engine Wheelbase (ft / m) | 12.83 / 3.91 |
Ratio of driving wheelbase to overall engine wheelbase | 0.55 |
Overall Wheelbase (engine & tender) (ft / m) | 36.62 / 11.16 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 38,800 / 17,599 |
Engine Weight (lbs / kg) | 43,800 / 19,867 |
Tender Loaded Weight (lbs / kg) | 30,200 / 13,699 |
Total Engine and Tender Weight (lbs / kg) | 74,000 / 33,566 |
Tender Water Capacity (gals / ML) | 1500 / 5.68 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 22 / 11 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 33 / 838 |
Boiler Pressure (psi / kPa) | 180 / 1240 |
High Pressure Cylinders (dia x stroke) (in / mm) | 11.75" x 16" / 298x406 |
Tractive Effort (lbs / kg) | 10,242 / 4645.70 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.79 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 68 - 2" / 51 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 10.79 / 3.29 |
Firebox Area (sq ft / m2) | 42.60 / 3.96 |
Grate Area (sq ft / m2) | 7.60 / 0.71 |
Evaporative Heating Surface (sq ft / m2) | 424 / 39.41 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 424 / 39.41 |
Evaporative Heating Surface/Cylinder Volume | 211.15 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 1368 |
Same as above plus superheater percentage | 1368 |
Same as above but substitute firebox area for grate area | 7668 |
Power L1 | 3141 |
Power MT | 535.42 |