Great Indian Peninsula 4-6-0 Locomotives in India

Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 20828)

Data from "Express Locomotive for the Great Indian Peninsula Ry", Locomotive Magazine, Volume XXVII [27] (15 July 1921), p. 169. Works numbers were 3367-3370

Designed by Messrs Robert White & Partners, Consulting Engineers, Westminster, this quartet of Ten-wheelers included "Hero", a memorial locomotives honoring the GIPR employees lost inthe Great War. LM described the design as a standard GIP broad gauge express passenger engine with piston valves and Belpaire firebox. The latter was delivered with a flat frame burner, but could be converted for coal firing.

Although similar to other HPS engines, this batch showed less superheater area from its Robinson design and the inside-admission piston valves were of the Robinson patent variety. .

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID20828
RailroadGreat Indian Peninsula
Number in Class4
Road Numbers
Number Built4
BuilderVulcan Foundry
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)14.25 / 4.34
Engine Wheelbase (ft / m)27.25 / 8.31
Ratio of driving wheelbase to overall engine wheelbase 0.52
Overall Wheelbase (engine & tender) (ft / m)51.67 / 15.75
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)120,064 / 54,460
Engine Weight (lbs / kg)162,960 / 73,918
Tender Loaded Weight (lbs / kg)109,960 / 49,877
Total Engine and Tender Weight (lbs / kg)272,920 / 123,795
Tender Water Capacity (gals / ML)4800 / 18.18
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)2000 / 7570
Minimum weight of rail (calculated) (lb/yd / kg/m)67 / 33.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)74 / 1880
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)20.5" x 26" / 521x660
Tractive Effort (lbs / kg)20,081 / 9108.60
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.98
Heating Ability
Tubes (number - dia) (in / mm)99 - 2.25" / 0
Flues (number - dia) (in / mm)24 - 5.5" / 0
Flue/Tube length (ft / m)15.87
Firebox Area (sq ft / m2)152 / 14.12
Grate Area (sq ft / m2)32 / 2.97
Evaporative Heating Surface (sq ft / m2)1599 / 148.55
Superheating Surface (sq ft / m2)314 / 29.17
Combined Heating Surface (sq ft / m2)1913 / 177.72
Evaporative Heating Surface/Cylinder Volume160.99
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5120
Same as above plus superheater percentage5939
Same as above but substitute firebox area for grate area28,211
Power L110,301
Power MT567.44

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