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London, Tilbury & Southend class 79
The class 79 of the London, Tilbury & Southend Railway was a 4-4-2T tank locomotive for fast suburban trains. It was designed by Thomas Whitelegg on the basis of his class 37, that has in turn been designed based on W...
| London, Tilbury & Southend class 79Remove | |
|---|---|
| Variant | Standard |
| Built | 1909, 1923-1930 |
| Manufacturers | Robert Stephenson & Co.;Nasmyth, Wilson & Co.;Derby |
| Wheel arrangement | 2B1 t |
| Gauge | 1435 mm |
| Length | |
| Service mass | 72292 kg |
| Top speed | 105 km/h |
| Power | |
| Engine |
General
| Property | London, Tilbury & Southend class 79 Standard Remove |
|---|---|
| Built | 1909, 1923-1930 |
| Manufacturers | Robert Stephenson & Co., Nasmyth, Wilson & Co., Derby |
| Wheel arrangement | 4-4-2T (Atlantic) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | London, Tilbury & Southend class 79 Standard Remove |
|---|---|
| Wheelbase | 9.39 m |
| Service mass | 72.3 t |
| Rigid wheelbase | 2.67 m |
| Water capacity | 8,184 l |
| Fuel capacity | 2.8 t (coal) |
Boiler
| Property | London, Tilbury & Southend class 79 Standard Remove |
|---|---|
| Grate area | 1.837 m² |
| Firebox surface | 11.055 m² |
| Tube heating surface | 92.996 m² |
| Evaporative heating surface | 104.052 m² |
| Total heating surface | 104.1 m² |
Power plant
| Property | London, Tilbury & Southend class 79 Standard Remove |
|---|---|
| Driver diameter | 1,981 mm |
| Boiler pressure | 11.7 bar |
| Expansion type | simple expansion |
| Cylinders | two, 483 x 660 mm |
Power
| Property | London, Tilbury & Southend class 79 Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 522 kW (710 PS) |
| Top speed | 105 km/h |
| Starting effort | 77.3 kN |
Calculated values
| Property | London, Tilbury & Southend class 79 Standard Remove |
|---|---|
| Optimal speed | 42 km/h |
| Power-to-weight ratio | 7.2 kW/t |
| Heating Surface Equivalent | 159.3 m² |
| Cylinder volume/HSE | 1 : 1,516.40 |
| Tractive force/Heating surface | 1 : 15.52 |
| Grate area/Heating surface | 1 : 56.64 |
| Firebox/Tube surface | 1 : 8.41 |
