Madras & Southern Mahratta 4-6-0 Locomotives in India


Class Details by Steve Llanso of Sweat House Media

Class 774 (Locobase 21005)

Data from "Madras & South Mahratta Railway Type 4.6.0", Locomotives Constructed by Kitson & Co,. Ltd (Leeds: n.d.). Works numbers were 4927-4930 in 1913.

Principal Dimensions by Steve Llanso of Middle Run Media
Class774
Locobase ID21005
RailroadMadras & Southern Mahratta
CountryIndia
Whyte4-6-0
Number in Class4
Road Numbers774-777
Gauge5'6"
Number Built4
BuilderKitson & Co
Year1913
Valve GearStephenson
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)57.25 / 17.45
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)112,448 / 51,006
Engine Weight (lbs / kg)150,752 / 68,380
Tender Loaded Weight (lbs / kg)102,032 / 46,281
Total Engine and Tender Weight (lbs / kg)252,784 / 114,661
Tender Water Capacity (gals / ML)4800 / 18.18
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 8.25 / 7.50
Minimum weight of rail (calculated) (lb/yd / kg/m)62 / 31
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)74 / 1880
Boiler Pressure (psi / kPa)180 / 1240
High Pressure Cylinders (dia x stroke) (in / mm)20" x 26" / 508x660
Tractive Effort (lbs / kg)21,503 / 9753.61
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.23
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)158 / 14.68
Grate Area (sq ft / m2)32 / 2.97
Evaporative Heating Surface (sq ft / m2)1775 / 164.90
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1775 / 164.90
Evaporative Heating Surface/Cylinder Volume187.75
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5760
Same as above plus superheater percentage5760
Same as above but substitute firebox area for grate area28,440
Power L16023
Power MT354.26

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