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Great Eastern class M15
Between 1884 and 1886, Worsdell had 40 tank locomotives built for the Great Eastern Railway for passenger service, which were called class M15. This first batch got Joy valve gear and due to their high consumption, th...
| Great Eastern class M15Remove | |
|---|---|
| Variant | 1884 variant |
| Built | 1884-1886 |
| Manufacturers | Stratford |
| Wheel arrangement | 1B1 t |
| Gauge | 1435 mm |
| Length | 10617 mm |
| Service mass | 52746 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Great Eastern class M151884 variant |
|---|---|
| Built | 1884-1886 |
| Manufacturers | Stratford |
| Wheel arrangement | 2-4-2T (Columbia) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Great Eastern class M151884 variant |
|---|---|
| Length | 10.62 m |
| Wheelbase | 7.01 m |
| Service mass | 52.7 t |
| Adhesion mass | 29.6 t |
| Rigid wheelbase | 7.01 m |
| Axle load | 15.9 t |
| Water capacity | 5,455 l |
| Fuel capacity | 2.3 t (coal) |
Boiler
| Property | Great Eastern class M151884 variant |
|---|---|
| Grate area | 1.433 m² |
| Firebox surface | 9.142 m² |
| Tube heating surface | 88.778 m² |
| Evaporative heating surface | 97.92 m² |
| Total heating surface | 97.9 m² |
Power plant
| Property | Great Eastern class M151884 variant |
|---|---|
| Driver diameter | 1,626 mm |
| Boiler pressure | 11 bar |
| Expansion type | simple expansion |
| Cylinders | two, 444 x 610 mm |
Power
| Property | Great Eastern class M151884 variant |
|---|---|
| Power source | steam |
| Estimated power | 317 kW (431 PS) |
| Starting effort | 69.5 kN |
Calculated values
| Property | Great Eastern class M151884 variant |
|---|---|
| Factor of adhesion | 1 : 4.18 |
| Optimal speed | 27 km/h |
| Power-to-weight ratio | 6.0 kW/t |
| Heating Surface Equivalent | 143.6 m² |
| Cylinder volume/HSE | 1 : 1,317.23 |
| Adhesive weight/Total | 1 : 1.78 |
| Tractive force/Heating surface | 1 : 14.82 |
| Grate area/Heating surface | 1 : 68.33 |
| Firebox/Tube surface | 1 : 9.71 |
