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Great North of Scotland No. 28 to 36
William Cowan joined the Great North of Scotland in 1857 as Chief Engineer and soon had to order new locomotives due to growth in traffic. The three locomotives delivered by Robert Stephenson & Co. in 1861 were among ...
General
| Property | Great North of Scotland No. 28 to 36Remove |
|---|---|
| Built | 1861, 1863 |
| Manufacturers | Robert Stephenson & Co. |
| Wheel arrangement | 4-4-0 (American) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Great North of Scotland No. 28 to 36Remove |
|---|---|
| Service weight | 35.1 t |
| Adhesive weight | 15.7 t |
| Axle load | 7.9 t |
Boiler
| Property | Great North of Scotland No. 28 to 36Remove |
|---|---|
| Grate area | 0.952 m² |
| Firebox surface | 6.262 m² |
| Tube heating surface | 83.427 m² |
| Evaporative heating surface | 89.689 m² |
| Total heating surface | 89.7 m² |
Power plant
| Property | Great North of Scotland No. 28 to 36Remove |
|---|---|
| Driver diameter | 1,549 mm |
| Boiler pressure | 9.7 bar |
| Expansion type | simple expansion |
| Cylinders | two, 406 x 559 mm |
Power
| Property | Great North of Scotland No. 28 to 36Remove |
|---|---|
| Power source | steam |
| Estimated power | 149 kW (203 PS) |
| Starting effort | 48.9 kN |
Calculated values
| Property | Great North of Scotland No. 28 to 36Remove |
|---|---|
| Factor of adhesion | 1 : 3.16 |
| Optimal speed | 19 km/h |
| Power-to-weight ratio | 4.3 kW/t |
| Heating Surface Equivalent | 121.0 m² |
| Cylinder volume/HSE | 1 : 1,198.12 |
| Adhesive weight/Total | 1 : 2.23 |
| Tractive force/Heating surface | 1 : 11.38 |
| Grate area/Heating surface | 1 : 94.21 |
| Firebox/Tube surface | 1 : 13.32 |
