Burma Railways 4-4-4 Locomotives in Burma


Class Details by Steve Llanso of Sweat House Media

Class C (Locobase 13915)

Burma Railways locomotive diagrams posted on Flicker by Florian Grupp, last accessed 3 March 2012.


Class unknown (Locobase 10126)

Data from "Oil-burning Tank Engine for the Burma Railways," The Locomotive & Railway Carriage & Wagon Review, Volume IV (15 October 1899), p. 154; and Nielson diagram No 1429. Boiler pressure is an estimate.

Small tank with a small footprint. In addition to the oil in the tank, which was burned using the Holden System, the bunker held 8 cwt (896 lb) of coal.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassCunknown
Locobase ID13915 10126
RailroadBurma RailwaysBurma Railways
CountryBurmaBurma
Whyte4-4-4T4-4-4T
Number in Class41
Road Numbers141, 203, 205, 207
GaugeMetre105 cm
Number Built41
BuilderNeilson, Reid
Year1898
Valve GearStephensonJoy
Locomotive Length and Weight
Driver Wheelbase (ft / m) 6.58 / 3.05 6.58 / 2.01
Engine Wheelbase (ft / m)26.08 / 7.9526.17 / 7.98
Ratio of driving wheelbase to overall engine wheelbase 0.25 0.25
Overall Wheelbase (engine & tender) (ft / m)26.08 / 7.9526.17 / 7.98
Axle Loading (Maximum Weight per Axle) (lbs / kg)22,512 / 10,21116,688 / 7570
Weight on Drivers (lbs / kg)33,600 / 15,24134,608 / 15,698
Engine Weight (lbs / kg)80,640 / 36,57881,872 / 37,137
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)80,640 / 36,57881,872 / 37,137
Tender Water Capacity (gals / ML)1860 / 7.051152 / 4.36
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.30 / 3240 / 908.40
Minimum weight of rail (calculated) (lb/yd / kg/m)28 / 1429 / 14.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)53 / 134653 / 1346
Boiler Pressure (psi / kPa)150 / 10.30150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)14" x 20" / 356x50814" x 20" / 356x508
Tractive Effort (lbs / kg)9430 / 4277.389430 / 4277.38
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.56 3.67
Heating Ability
Tubes (number - dia) (in / mm)76 - 1.875" / 48145 - 1.625" / 41
Flues (number - dia) (in / mm)10 - 5" / 127
Flue/Tube length (ft / m) 9.83 / 3 9.56 / 2.91
Firebox Area (sq ft / m2)105 / 9.7560 / 5.57
Grate Area (sq ft / m2)12 / 1.1112 / 1.11
Evaporative Heating Surface (sq ft / m2)600 / 55.74650 / 60.39
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)600 / 55.74650 / 60.39
Evaporative Heating Surface/Cylinder Volume168.38182.41
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation18001800
Same as above plus superheater percentage18001800
Same as above but substitute firebox area for grate area15,7509000
Power L141833532
Power MT548.92450.00

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