War Department Beyer-Garratt Locomotives in Kenya

Class Details by Steve Llanso of Sweat House Media

Class WD Heavy-Metre/EC4/54 (Locobase 511)

Data from Gavin Hamilton's excellent compilation of Garratt data posted at [] (6 September 2005); and "'54' Class Locomotive" East African Railways and Harbours Magazine, Volume 2, No. 9 (June 1956), p. 22. 9 class", East African Railways and Harbours Magazine, Volume 2, No 3 (June 1955), p. 89. See also Archie Morrow in the [], visited November 2002). Works numbers were 7075-7081 in 1944.

Double Mountain Garratts for the War Department that operated on the Kenya Uganda Rly as class EC4 (Class 54). EAR&H's account said that the engines were based on the 2-8-2+2-8-2 Colonial Double Mikado Garratts, but modified to "suit East African conditions".

Archie Morrow, a transplanted Irish engine driver, commented about the class: "They were an extremely powerful engine ...but were lightly built, needing a lot of maintenance and could not stand up to being pooled. They were allocated to Nakuru in 1960 to work heavy freight between there and Eldoret and were given regular drivers. Mine was No.5402 and, after getting some lubrication problems sorted out, we were a dream team."

Principal Dimensions by Steve Llanso of Sweat House Media

ClassWD Heavy-Metre/EC4/54
Locobase ID511
RailroadWar Department
Number in Class6
Road Numbers74418-74424/5401-5406
Number Built6
BuilderBeyer, Peacock
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)25.50 / 7.77
Engine Wheelbase (ft / m)77.75 / 23.70
Ratio of driving wheelbase to overall engine wheelbase 0.33
Overall Wheelbase (engine & tender) (ft / m)77.75 / 23.70
Axle Loading (Maximum Weight per Axle) (lbs / kg)31,360 / 14,225
Weight on Drivers (lbs / kg)250,880 / 113,797
Engine Weight (lbs / kg)384,160 / 174,252
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)384,160 / 174,252
Tender Water Capacity (gals / ML)7200 / 27.27
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)2850 / 10787.30
Minimum weight of rail (calculated) (lb/yd / kg/m)52 / 26
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)45.50 / 1156
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)19" x 24" / 483x610 (4)
Tractive Effort (lbs / kg)58,268 / 26429.95
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.31
Heating Ability
Tubes (number - dia) (in / mm)282 - 2" / 51
Flues (number - dia) (in / mm)36 - 5.5" / 140
Flue/Tube length (ft / m)11.72 / 3.57
Firebox Area (sq ft / m2)212 / 19.70
Grate Area (sq ft / m2)51.30 / 4.77
Evaporative Heating Surface (sq ft / m2)2540 / 235.97
Superheating Surface (sq ft / m2)470 / 43.66
Combined Heating Surface (sq ft / m2)3010 / 279.63
Evaporative Heating Surface/Cylinder Volume161.25
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation9234
Same as above plus superheater percentage10,711
Same as above but substitute firebox area for grate area44,266
Power L16785
Power MT476.99

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