Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 19, p. 165. Works number was 14207-14208 in January 1895.
This design was one of the largest of the time to use a Vauclain compound cylinder. The cylinder stroke was quite long and the piston valves a relatively generous 11 1/2" in (292 mm) diameter. Yet although it had five adhesion axles, it was about the size of a large North American Consolidation.
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | Dk 249 |
Locobase ID | 12130 |
Railroad | State TransCaucasus |
Country | Russia |
Whyte | 2-10-0 |
Number in Class | 2 |
Road Numbers | Dk 249-Dk 250 / Ye9998-9999 |
Gauge | 5' |
Number Built | 2 |
Builder | Burnham, Williams & Co |
Year | 1895 |
Valve Gear | Stephenson |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 17.92 / 5.46 |
Engine Wheelbase (ft / m) | 26.33 / 8.03 |
Ratio of driving wheelbase to overall engine wheelbase | 0.68 |
Overall Wheelbase (engine & tender) (ft / m) | 49.04 / 14.95 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 152,000 / 68,946 |
Engine Weight (lbs / kg) | 180,000 / 81,647 |
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) | 1800 / 6813 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 51 / 25.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 50 / 1270 |
Boiler Pressure (psi / kPa) | 180 / 1240 |
High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 28" / 381x711 |
Low Pressure Cylinders (dia x stroke) (in / mm) | 25" x 28" / 635x711 |
Tractive Effort (lbs / kg) | 28,350 / 12859.36 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.36 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 270 - 2" / 51 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 13.75 / 4.19 |
Firebox Area (sq ft / m2) | 165 / 15.33 |
Grate Area (sq ft / m2) | 33.90 / 3.15 |
Evaporative Heating Surface (sq ft / m2) | 2097 / 194.89 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 2097 / 194.89 |
Evaporative Heating Surface/Cylinder Volume | 366.17 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 6102 |
Same as above plus superheater percentage | 6102 |
Same as above but substitute firebox area for grate area | 29,700 |
Power L1 | 2755 |
Power MT | 199.79 |