East Indian 2-6-4 Locomotives in India


Class Details by Steve Llanso of Sweat House Media

Class BESA/PT (1906) (Locobase 2756)

Data from [link] (30 June 2003) and "Indian State Railways", The Locomotive, Volume 17 (15 April 1911), pp. 74; and "The Work of the British Engineering Standards Association as Applied to Locomotives and Rolling Stock: The Standardization of Locomotives for Indian Railways", Locomotive Magazine, Volume XXV [25] (15 August 1919), pp. 120-123. See also Cyril Hitchcock, "The Standardisation of Locomotives in India, 1910", Engineer, Volume 110 (28 October 1910), pp. 475; The Engineer's editors presented an emphatic dismissal of the notion of standarisation of types (e.g.: "Standard Goods", "Atlantic Passenger") in the same issue at p. 468. A rebuttal by "LS" appeared in the 11 November 1910 Engineer at p. 511.

These symmetrical Passenger Tanks had all inside motion that was, like the Belpaire boiler, identical to that of the British Engineering Standards Association SG (Standard Goods) 6-coupled freight engine. The PTs came in two sizes; this one used the smaller of the two SG boilers. (The same two boiler designs were used in the 4-4-0 SP design.)

See the HP 4-6-0 (Locobase 4241) for full description of the BESA intention and varying views of its utility.


Class BESA/PT (1910) (Locobase 20735)

Data from "The Work of the British Engineering Standards Association as Applied to Locomotives and Rolling Stock: The Standardization of Locomotives for Indian Railways", Locomotive Magazine, Volume XXV [25] (15 August 1919), pp. 120-123. See also Cyril Hitchcock, "The Standardisation of Locomotives in India, 1910", Engineer, Volume 110 (28 October 1910), pp. 475; The Engineer's editors presented an emphatic dismissal of the notion of standarisation of types (e.g.: "Standard Goods", "Atlantic Passenger") in the same issue at p. 468. A rebuttal by "LS" appeared in the 11 November 1910 Engineer at p. 511.

Locobase 2756 describes the first BESA Passenger Tank that appeared in 1906. Like the earlier design, the 1910 update all inside motion, Belpaire firebox, and Adams sliding-type rear bogie. Upgrading bridges and permanent way to accept higher axle loads allowed the incorporation of a larger boiler and firebox with more grate area.

See the HP 4-6-0 (Locobase 4241) for full description of the BESA intention and varying views of its utility.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassBESA/PT (1906)BESA/PT (1910)
Locobase ID2756 20735
RailroadEast IndianEast Indian
CountryIndiaIndia
Whyte2-6-4T2-6-4T
Number in Class
Road Numbers
Gauge5'6"5'6"
Number Built
Builder
Year19061910
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)12.83 / 3.9112.83 / 3.91
Engine Wheelbase (ft / m)34.25 / 10.4434.25 / 10.44
Ratio of driving wheelbase to overall engine wheelbase 0.37 0.37
Overall Wheelbase (engine & tender) (ft / m)34.25 / 10.4434.25 / 10.44
Axle Loading (Maximum Weight per Axle) (lbs / kg)33,60034,496 / 15,647
Weight on Drivers (lbs / kg)100,800 / 45,722103,712 / 47,043
Engine Weight (lbs / kg)172,480 / 78,236177,632 / 80,573
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)172,480 / 78,236177,632 / 80,573
Tender Water Capacity (gals / ML)2400 / 9.092400 / 9.09
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.30 / 3 3.30 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)56 / 2858 / 29
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)61.50 / 156261.50 / 1562
Boiler Pressure (psi / kPa)180 / 1240180 / 1240
High Pressure Cylinders (dia x stroke) (in / mm)18.5" x 26" / 470x66018.5" x 26" / 470x660
Tractive Effort (lbs / kg)22,138 / 10041.6422,138 / 10041.64
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.55 4.68
Heating Ability
Tubes (number - dia) (in / mm)236 - 1.75" / 44279 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.37 / 3.4711.37 / 3.47
Firebox Area (sq ft / m2)128 / 11.89150 / 13.94
Grate Area (sq ft / m2)25.30 / 2.3527 / 2.51
Evaporative Heating Surface (sq ft / m2)1358 / 126.161603 / 148.92
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1358 / 126.161603 / 148.92
Evaporative Heating Surface/Cylinder Volume167.88198.17
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation45544860
Same as above plus superheater percentage45544860
Same as above but substitute firebox area for grate area23,04027,000
Power L145575367
Power MT299.00342.26

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