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London, Midland & Scottish Ivatt class 2 2-6-2T
To replace various older tank locomotives in mixed service, Ivatt chose the 2-6-2T wheel arrangement, as this was also very successful on the GWR's “Small Prairies”. He took the 2-6-2T of his predecessor Stanier and m...
| London, Midland & Scottish Ivatt class 2 2-6-2TRemove | |
|---|---|
| Variant | Standard |
| Built | 1946-1952 |
| Manufacturers | Crewe;Derby |
| Wheel arrangement | 1C1 t |
| Gauge | 1435 mm |
| Length | 11821 mm |
| Service mass | 64262 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | London, Midland & Scottish Ivatt class 2 2-6-2T Standard Remove |
|---|---|
| Built | 1946-1952 |
| Manufacturers | Crewe, Derby |
| Wheel arrangement | 2-6-2T (Prairie) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | London, Midland & Scottish Ivatt class 2 2-6-2T Standard Remove |
|---|---|
| Length | 11.82 m |
| Wheelbase | 9.22 m |
| Service mass | 64.3 t |
| Rigid wheelbase | 4.19 m |
| Water capacity | 6,136 l |
| Fuel capacity | 3 t (coal) |
Boiler
| Property | London, Midland & Scottish Ivatt class 2 2-6-2T Standard Remove |
|---|---|
| Grate area | 1.626 m² |
| Firebox surface | 9.383 m² |
| Tube heating surface | 85.796 m² |
| Evaporative heating surface | 95.179 m² |
| Superheater surface | 12.403 m² |
| Total heating surface | 107.6 m² |
Power plant
| Property | London, Midland & Scottish Ivatt class 2 2-6-2T Standard Remove |
|---|---|
| Driver diameter | 1,524 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | simple expansion |
| Cylinders | two, 406 x 660 mm |
Power
| Property | London, Midland & Scottish Ivatt class 2 2-6-2T Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 634 kW (862 PS) |
| Starting effort | 83.9 kN |
Calculated values
| Property | London, Midland & Scottish Ivatt class 2 2-6-2T Standard Remove |
|---|---|
| Optimal speed | 47 km/h |
| Power-to-weight ratio | 9.9 kW/t |
| Heating Surface Equivalent | 166.9 m² |
| Cylinder volume/HSE | 1 : 1,026.55 |
| Tractive force/Heating surface | 1 : 16.29 |
| Grate area/Heating surface | 1 : 66.16 |
| Firebox/Tube surface | 1 : 9.14 |
| Total/Superheater | 1 : 7.67 |
