Central Provinces 2-8-4 Locomotives in India


Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 20470)

Data from "Central Provinces Railways (India)", Locomotive Magazine, Volume XXII [22] (15 April 1916), p. 68.

LM reported that the CPR ran through "very fertile country largely devoted to growing cotton and grain" from Murtajapur's station on the Nagpur branch of the Great Indian Peninsula Railway. Skinny-gauge lines extended in opposite directions from Murtajapur in central India to "Ellichpur" (later -- Achalpur) 48 miles/77 km to the northeast, and Murtajapur to "Yeotmal" (later Yavatmal) which lay 70 miles/113 km to the southeast. Yavatmal was a cotton headquarters that lay at 1,500 ft (457 m) above sea level.

The long-boilered 8-coupled tank used a Belpaire firebox and outside constant-lead radial valve gear. It was small even for the 762-mm gauge, but its trailing load came to less than 50 tons as three carriages weighed 9-11 tons (9.9-12.1 short tons).

Other Internet images show that this quartet represented a standard Hudswell design with locomotives operating both in industrial settings and in other non-British countries such as Iraq.

Principal Dimensions by Steve Llanso of Middle Run Media
Classunknown
Locobase ID20470
RailroadCentral Provinces
CountryIndia
Whyte2-8-4T
Number in Class4
Road Numbers
Gauge2'6"
Number Built4
BuilderHudswell, Clarke
Year1916
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.50 / 2.90
Engine Wheelbase (ft / m)26.25 / 8
Ratio of driving wheelbase to overall engine wheelbase 0.36
Overall Wheelbase (engine & tender) (ft / m)26.25 / 8
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)52,528 / 23,826
Engine Weight (lbs / kg)89,936 / 40,794
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)22 / 11
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)34 / 864
Boiler Pressure (psi / kPa)160 / 1100
High Pressure Cylinders (dia x stroke) (in / mm)13.5" x 18" / 343x457
Tractive Effort (lbs / kg)13,122 / 5952.05
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.00
Heating Ability
Tubes (number - dia) (in / mm)111 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)13.08 / 3.99
Firebox Area (sq ft / m2)68.25 / 6.34
Grate Area (sq ft / m2)15 / 1.39
Evaporative Heating Surface (sq ft / m2)830 / 77.11
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)830 / 77.11
Evaporative Heating Surface/Cylinder Volume278.33
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2400
Same as above plus superheater percentage2400
Same as above but substitute firebox area for grate area10,920
Power L13561
Power MT597.83

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