Assam Railway & Trading Co 2-6-4 Locomotives in India


Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 6376)

Data from [link] (a page of the ca. 1920 Vulcan Foundry catalogue). In the same website's [link], two of the locomotives are shown as works numbers 3170-3173.

This was a very "British" quartet of suburban tanks for the metre gauge. They had the usual combination of Belpaire fireboxes and outside constant-lead radial valve gear, long water tanks, trucks with circular holes, and enclosed cabs.

Principal Dimensions by Steve Llanso of Middle Run Media
Classunknown
Locobase ID6376
RailroadAssam Railway & Trading Co
CountryIndia
Whyte2-6-4T
Number in Class4
Road Numbers
GaugeMetre
Number Built4
BuilderVulcan Foundry
Year1915
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)10 / 3.05
Engine Wheelbase (ft / m)27.08 / 8.25
Ratio of driving wheelbase to overall engine wheelbase 0.37
Overall Wheelbase (engine & tender) (ft / m)27.08 / 8.25
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)64,960 / 29,465
Engine Weight (lbs / kg)115,360 / 52,326
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)1800 / 6.82
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)3 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)36 / 18
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)43 / 1092
Boiler Pressure (psi / kPa)180 / 1240
High Pressure Cylinders (dia x stroke) (in / mm)15" x 22" / 381x559
Tractive Effort (lbs / kg)17,613 / 7989.13
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.69
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)100 / 9.29
Grate Area (sq ft / m2)12.75 / 1.18
Evaporative Heating Surface (sq ft / m2)1026 / 95.35
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1026 / 95.35
Evaporative Heating Surface/Cylinder Volume228.02
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2295
Same as above plus superheater percentage2295
Same as above but substitute firebox area for grate area18,000
Power L14375
Power MT445.44

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