Mikado/MacArthur for the US Army's Transportation Corps in World War II for service on India's broad-gauge lines. Works numbers ran 69674-69713.
Based on the early-1930s standard Indian Railways XE (Locobase 4724) design, production of this 1945 batch came from Eddystone, Pa when British builders were swamped with work. It had a round-top firebox with four arch tubes contributing to direct heating surface area.
It's not clear to Locobase whether Baldwin's locomotives were fitted with the updates (Skefco roller bearings on the rod big ends, and a rear truck using the Cole pattern) described by Vulcan in its 1946 brochure.
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | 5'6" MacArthur - AWE (XE) |
Locobase ID | 959 |
Railroad | US Army - East Indian Railways |
Country | India |
Whyte | 2-8-2 |
Number in Class | 40 |
Road Numbers | |
Gauge | 5'6" |
Number Built | 40 |
Builder | Baldwin |
Year | 1942 |
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) | |
Weight on Drivers (lbs / kg) | 199,000 / 90,265 |
Engine Weight (lbs / kg) | 266,000 / 120,656 |
Tender Loaded Weight (lbs / kg) | 171,960 / 78,000 |
Total Engine and Tender Weight (lbs / kg) | 437,960 / 198,656 |
Tender Water Capacity (gals / ML) | 7200 / 27.27 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 15.40 / 14 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 83 / 41.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 61.50 / 1562 |
Boiler Pressure (psi / kPa) | 210 / 1450 |
High Pressure Cylinders (dia x stroke) (in / mm) | 23.5" x 30" / 597x762 |
Tractive Effort (lbs / kg) | 48,086 / 21811.47 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.14 |
Heating Ability | |
Tubes (number - dia) (in / mm) | |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 17.50 / 5.33 |
Firebox Area (sq ft / m2) | 286 / 26.58 |
Grate Area (sq ft / m2) | 60 / 5.58 |
Evaporative Heating Surface (sq ft / m2) | 3014 / 280.11 |
Superheating Surface (sq ft / m2) | 763 / 70.91 |
Combined Heating Surface (sq ft / m2) | 3777 / 351.02 |
Evaporative Heating Surface/Cylinder Volume | 200.13 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 12,600 |
Same as above plus superheater percentage | 15,120 |
Same as above but substitute firebox area for grate area | 72,072 |
Power L1 | 16,166 |
Power MT | 716.38 |