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South African class MJ1
The class MJ1 was created in World War I when the SAR had found out that not only German manufacturers were now out of reach, but also British companies didn't have huge capacities. This became especially apparent wit...
| South African class MJ1Remove | |
|---|---|
| Variant | |
| Built | 1918 |
| Manufacturers | Montreal Locomotive Works |
| Wheel arrangement | (1C)C ma |
| Gauge | 1067 mm |
| Length | 20907 mm |
| Service mass | 89920 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | South African class MJ1Remove |
|---|---|
| Built | 1918 |
| Manufacturers | Montreal Locomotive Works |
| Wheel arrangement | 2-6-6-0 |
| Gauge | 1,067 mm |
Dimensions and weights
| Property | South African class MJ1Remove |
|---|---|
| Length | 20.91 m |
| Wheelbase | 9.96 m |
| Total wheelbase | 18.50 m |
| Service mass | 89.9 t |
| Adhesion mass | 82.3 t |
| Total mass | 141.5 t |
| Rigid wheelbase | 2.54 m |
| Axle load | 14.3 t |
| Water capacity | 19,321 l |
| Fuel capacity | 10.2 t (coal) |
Boiler
| Property | South African class MJ1Remove |
|---|---|
| Grate area | 3.716 m² |
| Firebox surface | 12.635 m² |
| Tube heating surface | 177.073 m² |
| Evaporative heating surface | 189.708 m² |
| Superheater surface | 38.369 m² |
| Total heating surface | 228.1 m² |
Power plant
| Property | South African class MJ1Remove |
|---|---|
| Driver diameter | 1,080 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | compound |
| Cylinders | four, HP: 419 x 610 mm and LP: 660 x 610 mm |
Power
| Property | South African class MJ1Remove |
|---|---|
| Power source | steam |
| Estimated power | 969 kW (1,317 PS) |
| Starting effort | 165.8 kN |
| Starting effort simple | 198.9 kN |
Calculated values
| Property | South African class MJ1Remove |
|---|---|
| Factor of adhesion | 1 : 4.87 |
| Optimal speed | 35 km/h |
| Power-to-weight ratio | 10.8 kW/t |
| Heating Surface Equivalent | 329.6 m² |
| Cylinder volume/HSE | 1 : 1,143.73 |
| Adhesive weight/Total | 1 : 1.09 |
| Tractive force/Heating surface | 1 : 15.18 |
| Grate area/Heating surface | 1 : 61.38 |
| Firebox/Tube surface | 1 : 14.01 |
| Total/Superheater | 1 : 4.94 |
