Public Works Department 0-6-0 Locomotives in India

Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 20422)

Data from "Tank Locomotive for the Indian Public Works Department", Locomotive Magazine, Volume XXI [21] (15 December 1915), p. 266.

LM's report says nothing about its intended work environment, but the narrow gauge and small dimensions, as well as the owner, suggest an industrial setting. The heavy plate frame hid most of the valve gear's components, even though both the cylinders and valves were outside. The pistons drove the rear axle. The tall steam dome sat precisely over the middle axle and the side tanks extended from firebox to smokebox. A tall capped stack and open cab with canopy top completed the picture.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID20422
RailroadPublic Works Department
Number in Class3
Road Numbers
Number Built3
BuilderYorkshire Engine
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 4.62 / 1.41
Engine Wheelbase (ft / m) 4.62 / 1.41
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m) 4.62 / 1.41
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)24,920 / 11,304
Engine Weight (lbs / kg)24,920 / 11,304
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)24,920 / 11,304
Tender Water Capacity (gals / ML)240 / 0.91
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)14 / 7
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)24 / 610
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)8.5" x 12" / 216x305
Tractive Effort (lbs / kg)4913 / 2228.50
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.07
Heating Ability
Tubes (number - dia) (in / mm)62 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)25.10 / 2.33
Grate Area (sq ft / m2) 4.20 / 0.39
Evaporative Heating Surface (sq ft / m2)297 / 27.59
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)297 / 27.59
Evaporative Heating Surface/Cylinder Volume376.84
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation672
Same as above plus superheater percentage672
Same as above but substitute firebox area for grate area4016
Power L13431
Power MT910.60

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