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 Middle Run Media | |
---|---|
Class | WD Heavy-Metre/EC4/54 |
Locobase ID | 511 |
Railroad | War Department |
Country | Kenya |
Whyte | 4-8-2+2-8-4 |
Number in Class | 6 |
Road Numbers | 74418-74424/5401-5406 |
Gauge | Metre |
Number Built | 6 |
Builder | Beyer, Peacock |
Year | 1943 |
Valve Gear | Walschaert |
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 / 1240 |
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 Volume | 161.25 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 9234 |
Same as above plus superheater percentage | 10,711 |
Same as above but substitute firebox area for grate area | 44,266 |
Power L1 | 6785 |
Power MT | 476.99 |