Data from Gavin Hamilton's excellent compilation of Garratt data posted at [] (6 September 2005); "'58' Class Locomotive" East African Railways and Harbours Magazine, Volume 3, No. 1 (February 1956), p. 22. Works numbers were 7290-7307 in 1949.
Data from Gavin Hamilton's excellent compilation of Garratt data posted at [] 6 September 2005); and "'59 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 7632-7658, 7700-7706 in 1959. Named after mountains in East Africa.
Data from Gavin Hamilton's excellent compilation of Garratt data posted at [] . (6 September 2005); and "'60' class", East African Railways and Harbours Magazine, Volume 2, No 4 (August 1955), p. 129.
Principal Dimensions by Steve Llanso of Sweat House Media | |||
---|---|---|---|
Class | 58 | 59 | 60 |
Locobase ID | 4331 | 693 | 692 |
Railroad | East African Railways | East African Railways | East African Railways |
Country | Kenya | Kenya | Kenya |
Whyte | 4-8-4+4-8-4 | 4-8-2+2-8-4 | 4-8-2+2-8-4 |
Number in Class | 18 | 34 | 29 |
Road Numbers | 89-106 | 5901-5934 | 6000-6029 |
Gauge | Metre | Metre | Metre |
Number Built | 18 | 34 | 29 |
Builder | Beyer, Peacock | Beyer, Peacock | several |
Year | 1949 | 1955 | 1954 |
Valve Gear | Walschaert | Walschaert | Walschaert |
Locomotive Length and Weight | |||
Driver Wheelbase (ft / m) | 30 / 9.14 | 30 / 9.14 | 25.83 / 7.87 |
Engine Wheelbase (ft / m) | 70.42 / 21.46 | 92.55 / 28.21 | |
Ratio of driving wheelbase to overall engine wheelbase | 0.43 | 0.32 | |
Overall Wheelbase (engine & tender) (ft / m) | 87.92 / 26.80 | 104.12 / 31.74 | 78.08 / 23.80 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 26,320 / 11,939 | 47,040 / 21,337 | 24,864 / 11,278 |
Weight on Drivers (lbs / kg) | 210,560 / 95,509 | 357,347 / 162,090 | 196,672 / 89,209 |
Engine Weight (lbs / kg) | 417,200 / 189,239 | 563,763 / 255,719 | 342,384 / 155,303 |
Tender Loaded Weight (lbs / kg) | |||
Total Engine and Tender Weight (lbs / kg) | 417,200 / 189,239 | 563,763 / 255,719 | 342,384 / 155,303 |
Tender Water Capacity (gals / ML) | 7200 / 27.27 | 10,320 / 39.09 | 5534 / 20.96 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2850 / 10787.30 | 3240 / 12263.40 | 2160 / 8175.60 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 44 / 22 | 74 / 37 | 41 / 20.50 |
Geometry Relating to Tractive Effort | |||
Driver Diameter (in / mm) | 54 / 1372 | 54 / 1372 | 48 / 1219 |
Boiler Pressure (psi / kPa) | 220 / 15.20 | 225 / 15.50 | 200 / 13.80 |
High Pressure Cylinders (dia x stroke) (in / mm) | 16.5" x 26" / 419x660 (4) | 20.5" x 28" / 521x711 (4) | 16" x 24" / 406x610 (4) |
Tractive Effort (lbs / kg) | 49,025 / 22237.39 | 83,350 / 37806.97 | 43,520 / 19740.36 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.29 | 4.29 | 4.52 |
Heating Ability | |||
Tubes (number - dia) (in / mm) | 220 - 1.875" / 48 | 285 - 2" / 51 | 176 - 2" / 51 |
Flues (number - dia) (in / mm) | 38 - 5.25" / 133 | 50 - 5.5" / 140 | 32 - 5.28" / 134 |
Flue/Tube length (ft / m) | 11.92 / 3.63 | 15 | 12.95 / 3.95 |
Firebox Area (sq ft / m2) | 234 / 21.74 | 247 / 22.95 | 170 / 15.79 |
Grate Area (sq ft / m2) | 48.50 / 4.51 | 72 / 6.69 | 48.75 / 4.53 |
Evaporative Heating Surface (sq ft / m2) | 2215 / 205.78 | 3560 / 330.74 | 1925 / 178.84 |
Superheating Surface (sq ft / m2) | 477 / 44.31 | 747 / 69.40 | 370 / 34.37 |
Combined Heating Surface (sq ft / m2) | 2692 / 250.09 | 4307 / 400.14 | 2295 / 213.21 |
Evaporative Heating Surface/Cylinder Volume | 172.12 | 166.41 | 172.33 |
Computations Relating to Power Output (More Information) | |||
Robert LeMassena's Power Computation | 10,670 | 16,200 | 9750 |
Same as above plus superheater percentage | 12,591 | 18,954 | 11,310 |
Same as above but substitute firebox area for grate area | 60,746 | 65,023 | 39,440 |
Power L1 | 11,813 | 10,903 | 8745 |
Power MT | 989.48 | 538.12 | 784.23 |