Aden Railway 4-6-0 Locomotives in Aden


Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 14421)

Data from "Rolling Stock for the Aden Railway", Locomotive Magazine, Volume 34, No. 426 (15 February 1928), pp. 42-43; "Railways of Aden" in [link], an Israeli railway magazine that focuses on the Middle East; original article cite was Robert Mumford, "Indian Outpost in Arabia", Railway Magazine (February 1976), pp. 73-75.

When Aden was a British protectorate at the very southern tip of the Arabian Peninsula, the colony built a 29-mile (46.7 km), single track, metre-gauge railway. "[I]nitially," says Mumford, " it was used for supplying the British forces fighting against the Turks [in World War One]."

LM's report focused on water supply, beginning with the general observation tthat "Fresh water is scarce in Aden, being obtained chiefly by condensation ...Much of the water used by the locomotives is taken from a small river near Lahej." What water there was was stored in ancient storage reservoirs as well as wells further away from Aden and "delivered through an aqueduct seven miles long." Moreover, all foodstuffs had to be imported.

Because Aden was grouped with rest of Britain's Indian Empire, it was stocked with Anglo-British locomotive designs. Three East Bengal Railway 0-6-0s and three F1 0-6-0s from the Bombay, Baroda & Central stocked the AR.

The oil-burning Ten-wheeler outlined here was based on the Indian State Railways standard metre-gauge 4-6-0 and was the first of seven locomotives of all types on the AR. It used Holden's system of oil-burning in a Belpaire firebox.

Plans to extend the railway another 25 miles(40 km) to the protectorate's frontier never bore fruit Although busy during its heyday, the AR operated for only 13 years before being closed in 1929 for economic reasons.

A letter from Hugh Hughes in reply to the Mumford account (and reproduced in harakevet) clarifies and corrects the earlier story. Hughes reported that the 1 made its way back to India after the AR's closing and served the Eastern Bengal as their 325 from 1931 on. A change of flag occurred during the 1947 Partition of India when Bengal was taken into East Pakistan. East Pakistan's independence secured in 1971, its railway still operated the 325 in 1973.

Principal Dimensions by Steve Llanso of Middle Run Media
Class1
Locobase ID14421
RailroadAden Railway
CountryAden
Whyte4-6-0
Number in Class1
Road Numbers1
GaugeMetre
Number Built1
BuilderNasmyth Wilson
Year1922
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)12 / 3.66
Engine Wheelbase (ft / m)21.12 / 6.44
Ratio of driving wheelbase to overall engine wheelbase 0.57
Overall Wheelbase (engine & tender) (ft / m)42.19 / 12.86
Axle Loading (Maximum Weight per Axle) (lbs / kg)21,392
Weight on Drivers (lbs / kg)62,496 / 28,348
Engine Weight (lbs / kg)81,312 / 36,883
Tender Loaded Weight (lbs / kg)51,520 / 23,369
Total Engine and Tender Weight (lbs / kg)132,832 / 60,252
Tender Water Capacity (gals / ML)2400 / 9.09
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)617 / 2335.30
Minimum weight of rail (calculated) (lb/yd / kg/m)35 / 17.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 1219
Boiler Pressure (psi / kPa)180 / 1240
High Pressure Cylinders (dia x stroke) (in / mm)16" x 22" / 406x559
Tractive Effort (lbs / kg)17,952 / 8142.90
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.48
Heating Ability
Tubes (number - dia) (in / mm)90 - 1.75" / 44
Flues (number - dia) (in / mm)12 - 5.25" / 133
Flue/Tube length (ft / m) 9.92 / 3.02
Firebox Area (sq ft / m2)108 / 10.03
Grate Area (sq ft / m2)15 / 1.39
Evaporative Heating Surface (sq ft / m2)679 / 63.08
Superheating Surface (sq ft / m2)125 / 11.61
Combined Heating Surface (sq ft / m2)804 / 74.69
Evaporative Heating Surface/Cylinder Volume132.63
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2700
Same as above plus superheater percentage3132
Same as above but substitute firebox area for grate area22,550
Power L16593
Power MT697.73

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