Punjab Public Works Department 0-6-4 Locomotives in India

Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 15290)

Data from DeGolyer, Vol 72, pp. 286. Works number 56324 was in March 1923.

Locobase can't say much about this unusual construction tank engine except that it weighed nearly the same as an early Vulcan Foundry class that came to the East Indian in 1904 (Locobase 6283). The Punjab locomotive had a bigger boiler and grate and was pressed to a higher degree.

The specifications required that the locomotive be able to negotiate a 16 degree curve (radius of 359 feet/109.5 metres) and be able to pull a load of 235 tons up a 2 1/2% grade for a mile (1.6 km).

Apparently the color scheme proposed by the PPWD demanded close attention. Although spelled out in detail in the specs, all of the details were lined out and replaced with a notation that the buyer would paint the locomotive after delivery.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID15290
RailroadPunjab Public Works Department
Number in Class1
Road Numbers
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)9 / 2.74
Engine Wheelbase (ft / m)22.50 / 6.86
Ratio of driving wheelbase to overall engine wheelbase 0.40
Overall Wheelbase (engine & tender) (ft / m)22.50 / 6.86
Axle Loading (Maximum Weight per Axle) (lbs / kg)35,840 / 16,257
Weight on Drivers (lbs / kg)107,000 / 48,534
Engine Weight (lbs / kg)152,000 / 68,946
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)152,000 / 68,946
Tender Water Capacity (gals / ML)2400 / 9.09
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 2.24 / 2
Minimum weight of rail (calculated) (lb/yd / kg/m)59 / 29.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 1067
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)17" x 24" / 432x610
Tractive Effort (lbs / kg)25,267 / 11460.93
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.23
Heating Ability
Tubes (number - dia) (in / mm)244 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.25 / 3.12
Firebox Area (sq ft / m2)118 / 10.96
Grate Area (sq ft / m2)27 / 2.51
Evaporative Heating Surface (sq ft / m2)1420 / 131.92
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1420 / 131.92
Evaporative Heating Surface/Cylinder Volume225.22
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4860
Same as above plus superheater percentage4860
Same as above but substitute firebox area for grate area21,240
Power L14017
Power MT248.30

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