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British Rail Standard class 2 tank
The smallest tank locomotive of the BR standard program was the class 2 tank with a 2-6-2T wheel arrangement. It was derived from the LMS Ivatt class 2 2-6-2T and intended for mixed traffic. It had a smaller loading g...
General
| Property | British Rail Standard class 2 tankRemove |
|---|---|
| Built | 1953-1957 |
| Manufacturers | Crewe, Darlington |
| Wheel arrangement | 2-6-2T (Prairie) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | British Rail Standard class 2 tankRemove |
|---|---|
| Length | 11.82 m |
| Wheelbase | 9.22 m |
| Rigid wheelbase | 4.19 m |
| Service weight | 67.3 t |
| Adhesive weight | 41.9 t |
| Axle load | 14.2 t |
| Water capacity | 25,438 l |
| Fuel capacity | 0.7 t (coal) |
Boiler
| Property | British Rail Standard class 2 tankRemove |
|---|---|
| Grate area | 1.626 m² |
| Firebox surface | 9.383 m² |
| Tube heating surface | 85.842 m² |
| Evaporative heating surface | 95.226 m² |
| Superheater surface | 11.52 m² |
| Total heating surface | 106.7 m² |
Power plant
| Property | British Rail Standard class 2 tankRemove |
|---|---|
| Driver diameter | 1,524 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | simple expansion |
| Cylinders | two, 419 x 610 mm |
Power
| Property | British Rail Standard class 2 tankRemove |
|---|---|
| Power source | steam |
| Estimated power | 634 kW (862 PS) |
| Starting effort | 82.3 kN |
Calculated values
| Property | British Rail Standard class 2 tankRemove |
|---|---|
| Factor of adhesion | 1 : 4.99 |
| Optimal speed | 47 km/h |
| Power-to-weight ratio | 9.4 kW/t |
| Heating Surface Equivalent | 165.2 m² |
| Cylinder volume/HSE | 1 : 1,018.22 |
| Adhesive weight/Total | 1 : 1.61 |
| Tractive force/Heating surface | 1 : 16.11 |
| Grate area/Heating surface | 1 : 65.65 |
| Firebox/Tube surface | 1 : 9.15 |
| Total/Superheater | 1 : 8.27 |
