Crown Agents for the Colonies 0-4-0 Locomotives in Ceylon


Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 20301)

Data from "Narrow Gauge Locomotive for Ceylon", The Locomotive Magazine, Vol 20 (15 September 1914), p. 237.

This engine was designed to burn wood and run on very light rail under very tight axle loading constraints. LM's report said that the answer lay in putting all of the valve motion outside the frames, which opened up the inside to shift the firebox forward "well over the driving axle".

Principal Dimensions by Steve Llanso of Sweat House Media

Classunknown
Locobase ID20301
RailroadCrown Agents for the Colonies
CountryCeylon
Whyte0-4-0T
Number in Class2
Road Numbers
Gauge3'6"
Number Built2
BuilderWG Bagnall
Year1906
Valve GearBagnall Price
Locomotive Length and Weight
Driver Wheelbase (ft / m) 4.75 / 1.45
Engine Wheelbase (ft / m) 4.75 / 1.45
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m) 4.75 / 1.45
Axle Loading (Maximum Weight per Axle) (lbs / kg)16,352 / 7417
Weight on Drivers (lbs / kg)32,480 / 14,733
Engine Weight (lbs / kg)32,480 / 14,733
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)32,480 / 14,733
Tender Water Capacity (gals / ML)360 / 1.36
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)27 / 13.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)30 / 762
Boiler Pressure (psi / kPa)150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)10" x 15" / 254x381
Tractive Effort (lbs / kg)6375 / 2891.65
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.09
Heating Ability
Tubes (number - dia) (in / mm)79 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)7 / 2.13
Firebox Area (sq ft / m2)36 / 3.34
Grate Area (sq ft / m2) 6.30 / 0.59
Evaporative Heating Surface (sq ft / m2)298 / 27.69
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)298 / 27.69
Evaporative Heating Surface/Cylinder Volume218.55
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation945
Same as above plus superheater percentage945
Same as above but substitute firebox area for grate area5400
Power L12629
Power MT356.89

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