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Great Northern (UK) classes J5 and J4
The design of the J5 goes back to the design of Patrick Stirling's “Standard Goods” which were built from 1867 and are known as the class J7. As a direct development, the J6 was built from 1873, in which the boiler di...
General
| Property | Great Northern (UK) classes J5 and J4 J5 |
|---|---|
| Built | 1901-1903 |
| Manufacturers | Doncaster |
| Wheel arrangement | 0-6-0 (Six-coupled) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Great Northern (UK) classes J5 and J4 J5 |
|---|---|
| Wheelbase | 4.72 m |
| Rigid wheelbase | 4.72 m |
| Total wheelbase | 11.27 m |
| Service weight | 41.9 t |
| Adhesive weight | 41.9 t |
| Axle load | 15.4 t |
| Total weight | 77.4 t |
Boiler
| Property | Great Northern (UK) classes J5 and J4 J5 |
|---|---|
| Grate area | 1.51 m² |
| Firebox surface | 9.569 m² |
| Tube heating surface | 94.39 m² |
| Evaporative heating surface | 103.959 m² |
| Total heating surface | 104.0 m² |
Power plant
| Property | Great Northern (UK) classes J5 and J4 J5 |
|---|---|
| Driver diameter | 1,575 mm |
| Boiler pressure | 11.7 bar |
| Expansion type | simple expansion |
| Cylinders | two, 444 x 660 mm |
Power
| Property | Great Northern (UK) classes J5 and J4 J5 |
|---|---|
| Power source | steam |
| Estimated power | 447 kW (608 PS) |
| Starting effort | 82.6 kN |
Calculated values
| Property | Great Northern (UK) classes J5 and J4 J5 |
|---|---|
| Factor of adhesion | 1 : 4.98 |
| Optimal speed | 34 km/h |
| Power-to-weight ratio | 10.7 kW/t |
| Heating Surface Equivalent | 151.8 m² |
| Cylinder volume/HSE | 1 : 1,350.17 |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 16.58 |
| Grate area/Heating surface | 1 : 68.85 |
| Firebox/Tube surface | 1 : 9.86 |
