Data from Baldwin data cards for two orders for Class 12-42-F, 20. See also DeGolyer, Vol 77, pp. 600+. Works numbers were 61350-61351 in May 1930 and 61749 in September 1933.
Exactly duplicating the Baldwin light Decapods (see, e.g., Locobases 1396-1397) that had gone into service in several southern roads during the 1920s, these were the first D & S locomotives that were ordered directly by that road. (One other note: the 202 was the only steam engine Baldwin delivered to a North American customer in 1933.)
Firebox heating surface included 25 sq ft (2.3 sq m) in four arch tubes. Piston valves measured 12" (305 mm) in diameter.
The D & S was a North Carolina shortline that began life as the Cape Fear & Northern in 1892, but was built between Durham and Dunn (in an arc west of Raleigh) in 1903.
The new-built trio never operated elsewhere for the 21-24 years that they remained in service. They were joined by a sister deck in the form of ex-Alabama, Tennessee & Northern 403 in 1947 and all were retired in 1954.
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | 200 |
Locobase ID | 11370 |
Railroad | Durham & Southern |
Country | USA |
Whyte | 2-10-0 |
Number in Class | 3 |
Road Numbers | 200-202 |
Gauge | Std |
Number Built | 3 |
Builder | Baldwin |
Year | 1930 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 19.67 / 6 |
Engine Wheelbase (ft / m) | 28.25 / 8.61 |
Ratio of driving wheelbase to overall engine wheelbase | 0.70 |
Overall Wheelbase (engine & tender) (ft / m) | 60.59 / 18.47 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 38,000 / 17,237 |
Weight on Drivers (lbs / kg) | 190,000 / 86,183 |
Engine Weight (lbs / kg) | 212,000 / 96,162 |
Tender Loaded Weight (lbs / kg) | 141,500 / 64,183 |
Total Engine and Tender Weight (lbs / kg) | 353,500 / 160,345 |
Tender Water Capacity (gals / ML) | 7000 / 26.52 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 12 / 11 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 63 / 31.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 56 / 1422 |
Boiler Pressure (psi / kPa) | 190 / 1310 |
High Pressure Cylinders (dia x stroke) (in / mm) | 24" x 28" / 610x711 |
Tractive Effort (lbs / kg) | 46,512 / 21097.51 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.08 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 167 - 2.25" / 57 |
Flues (number - dia) (in / mm) | 28 - 5.375" / 137 |
Flue/Tube length (ft / m) | 17 / 5.18 |
Firebox Area (sq ft / m2) | 197 / 18.31 |
Grate Area (sq ft / m2) | 54.30 / 5.05 |
Evaporative Heating Surface (sq ft / m2) | 2343 / 217.75 |
Superheating Surface (sq ft / m2) | 553 / 51.39 |
Combined Heating Surface (sq ft / m2) | 2896 / 269.14 |
Evaporative Heating Surface/Cylinder Volume | 159.82 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 10,317 |
Same as above plus superheater percentage | 12,277 |
Same as above but substitute firebox area for grate area | 44,542 |
Power L1 | 10,046 |
Power MT | 582.83 |