Indian Midland 4-4-0 Locomotives in India


Class Details by Steve Llanso of Sweat House Media

Class 251 (Locobase 10604)

Data from "Two Interesting Kitson Locomotives," The Locomotive Magazine, Vol XIII (15 January 1907), pp. 14. Boiler pressure is an estimate.

These were express engines on a 1,112-mile railway that in a few years would be taken over by the Great Indian Peninsula Railway. The large cab with extended eave gave the design an American look, notwithstanding the inside cylinders, clean boiler with polished brass dome, and splashers over both driving axles. All of the engines had names commemorating cities served by the railway.

Principal Dimensions by Steve Llanso of Sweat House Media

Class251
Locobase ID10604
RailroadIndian Midland
CountryIndia
Whyte4-4-0
Number in Class10
Road Numbers251-260
Gauge5'6"
Number Built10
BuilderKitson & Co
Year1900
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)22.08 / 6.73
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)
Engine Weight (lbs / kg)104,720 / 47,500
Tender Loaded Weight (lbs / kg)75,600 / 34,292
Total Engine and Tender Weight (lbs / kg)180,320 / 81,792
Tender Water Capacity (gals / ML)2400 / 9.09
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 8.80 / 8
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)78 / 1981
Boiler Pressure (psi / kPa)175 / 12.10
High Pressure Cylinders (dia x stroke) (in / mm)18.5" x 26" / 470x660
Tractive Effort (lbs / kg)16,970 / 7697.47
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)21.25 / 1.97
Evaporative Heating Surface (sq ft / m2)1238 / 115.06
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1238 / 115.06
Evaporative Heating Surface/Cylinder Volume153.05
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3719
Same as above plus superheater percentage3719
Same as above but substitute firebox area for grate area
Power L1
Power MT

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