Darjeeling & Himalaya 0-4-2 Locomotives in India

Class Details by Steve Llanso of Sweat House Media

Class Edward VII (Locobase 10477)

Data from "Narrow Gauge Tank Locomotive for India," The Locomotive Magazine, Vol X (15 November 1904), p. 199. Works number was 4826.

This small tank operated on a recently opened extension of the D J. Its running gear wasw covered by a set of panels, which suggests the railway ran along the road.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassEdward VII
Locobase ID10477
RailroadDarjeeling & Himalaya
Number in Class1
Road Numbers
Number Built1
BuilderSharp, Stewart
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 4.25 / 1.30
Engine Wheelbase (ft / m) 9.33 / 2.84
Ratio of driving wheelbase to overall engine wheelbase 0.46
Overall Wheelbase (engine & tender) (ft / m) 9.33 / 2.84
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)
Engine Weight (lbs / kg)28,000 / 12,701
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)28,000 / 12,701
Tender Water Capacity (gals / ML)240 / 0.91
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 0.80 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)30 / 762
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)8" x 14" / 203x356
Tractive Effort (lbs / kg)4062 / 1842.49
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)28 / 2.60
Grate Area (sq ft / m2) 7.16 / 0.67
Evaporative Heating Surface (sq ft / m2)215 / 19.97
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)215 / 19.97
Evaporative Heating Surface/Cylinder Volume263.97
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1146
Same as above plus superheater percentage1146
Same as above but substitute firebox area for grate area4480
Power L13487
Power MT

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