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East African class 59
The class 59 of the East African Railways wasn't only the most powerful and heaviest Garratt locomotive ever built for meter gauge , but most likely also heavier than all built for cape gauge and nearly as heavy as th...
General
| Property | East African class 59Remove |
|---|---|
| Built | 1955 |
| Manufacturers | Beyer, Peacock & Co. |
| Wheel arrangement | 4-8-2+2-8-4T (Double Mountain (Garratt)) |
| Gauge | 1,000 mm (Meter gauge) |
Dimensions and weights
| Property | East African class 59Remove |
|---|---|
| Length | 31.37 m |
| Wheelbase | 28.21 m |
| Rigid wheelbase | 4.57 m |
| Service weight | 255.7 t |
| Adhesive weight | 162.1 t |
| Axle load | 21.3 t |
| Water capacity | 32,555 l |
| Fuel capacity | 12,276 l (oil) |
Boiler
| Property | East African class 59Remove |
|---|---|
| Grate area | 6.689 m² |
| Firebox surface | 22.947 m² |
| Tube heating surface | 307.788 m² |
| Evaporative heating surface | 330.735 m² |
| Superheater surface | 69.399 m² |
| Total heating surface | 400.1 m² |
Power plant
| Property | East African class 59Remove |
|---|---|
| Driver diameter | 1,372 mm |
| Boiler pressure | 15.5 bar |
| Expansion type | simple expansion |
| Cylinders | four, 521 x 711 mm |
Power
| Property | East African class 59Remove |
|---|---|
| Power source | steam |
| Estimated power | 2,013 kW (2,737 PS) |
| Top speed | 69 km/h |
| Starting effort | 370.8 kN |
Calculated values
| Property | East African class 59Remove |
|---|---|
| Factor of adhesion | 1 : 4.29 |
| Optimal speed | 34 km/h |
| Power-to-weight ratio | 7.9 kW/t |
| Heating Surface Equivalent | 584.3 m² |
| Cylinder volume/HSE | 1 : 1,036.82 |
| Adhesive weight/Total | 1 : 1.58 |
| Tractive force/Heating surface | 1 : 19.35 |
| Grate area/Heating surface | 1 : 59.82 |
| Firebox/Tube surface | 1 : 13.41 |
| Total/Superheater | 1 : 4.77 |
