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Great Indian Peninsula class D/4
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India | 1912
6 produced
Image of locomotive
Vulcan Foundry

The class D/4 of the Great Indian Peninsula Railway was a 4-6-0 locomotive for passenger and mail service with a driver diameter of 74 inches. Essentially, it was a superheated version of the BESA HP standard design. Compared to this, the boiler pressure had been reduced by 20 psi and the cylinder diameter was increased from 19 to 20.5 inches. To make space for the superheater, roughly half of the tubes were removed in favour of flues. Only six locomotives of this class were built and also used for very long distance mail trains. One of these ran from Calcutta to Howrah and ran 1,349 miles (2,170 km) in 44 1/4 hours.

General
Built1912
ManufacturerVulcan Foundry
Wheel arr.4-6-0 (Ten-wheeler) 
Gauge5 ft 6 in (Indian broad gauge)
Dimensions and Weights
Wheelbase27 ft 3 in
Rigid wheelbase14 ft 3 in
Total wheelbase51 ft 8 in
Service weight159,040 lbs
Adhesive weight115,360 lbs
Total weight263,200 lbs
Axle load38,528 lbs
Water capacity4,804 us gal
Fuel capacity17,920 lbs (coal)
Boiler
Grate area32 sq ft
Firebox area152 sq ft
Tube heating area1,447 sq ft
Evaporative heating area1,599 sq ft
Superheater area407 sq ft
Total heating area2,006 sq ft
Power Plant
Driver diameter74 in
Boiler pressure160 psi
Expansion typesimple
Cylinderstwo, 20 1/2 x 26 in
Power
Power sourcesteam
Estimated power1,150 hp (858 kW)
Starting effort20,081 lbf
Calculated Values
steam locomotive
passenger
last changed: 04/2025
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