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North Eastern classes Z and Z1
Vincent Raven designed the Atlantics of the class V2 in 1911 with a single expansion three-cylinder engine. He had ten saturated and ten superheated locomotives built, which had cylinders of different dimensions and w...
| North Eastern classes Z and Z1Remove | |
|---|---|
| Variant | |
| Built | 1911-1918 |
| Manufacturers | North British |
| Wheel arrangement | 2B1 |
| Gauge | 1435 mm |
| Length | 19593 mm |
| Service mass | 78236 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | North Eastern classes Z and Z1Remove |
|---|---|
| Built | 1911-1918 |
| Manufacturers | North British |
| Wheel arrangement | 4-4-2 (Atlantic) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | North Eastern classes Z and Z1Remove |
|---|---|
| Length | 19.59 m |
| Wheelbase | 8.99 m |
| Service mass | 78.2 t |
| Adhesion mass | 44.7 t |
| Total mass | 124.3 t |
| Rigid wheelbase | 2.31 m |
| Axle load | 20.3 t |
| Water capacity | 18,753 l |
| Fuel capacity | 5.6 t (coal) |
Boiler
| Property | North Eastern classes Z and Z1Remove |
|---|---|
| Grate area | 2.508 m² |
| Firebox surface | 17.187 m² |
| Tube heating surface | 120.588 m² |
| Evaporative heating surface | 137.775 m² |
| Superheater surface | 36.418 m² |
| Total heating surface | 174.2 m² |
Power plant
| Property | North Eastern classes Z and Z1Remove |
|---|---|
| Driver diameter | 2,083 mm |
| Boiler pressure | 12.1 bar |
| Expansion type | simple expansion |
| Cylinders | three, 419 x 660 mm |
Power
| Property | North Eastern classes Z and Z1Remove |
|---|---|
| Power source | steam |
| Estimated power | 783 kW (1,065 PS) |
| Starting effort | 85.7 kN |
Calculated values
| Property | North Eastern classes Z and Z1Remove |
|---|---|
| Factor of adhesion | 1 : 5.12 |
| Optimal speed | 56 km/h |
| Power-to-weight ratio | 10.0 kW/t |
| Heating Surface Equivalent | 296.5 m² |
| Cylinder volume/HSE | 1 : 921.64 |
| Adhesive weight/Total | 1 : 1.75 |
| Tractive force/Heating surface | 1 : 10.27 |
| Grate area/Heating surface | 1 : 69.45 |
| Firebox/Tube surface | 1 : 7.02 |
| Total/Superheater | 1 : 3.78 |
