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Highland Railway class F “Duke”
David Jones had ten 4-4-0 express locomotives built by Dübs in 1874, which were first called the Bruce class and later renamed the Duke class when another class with that name was introduced. Between 1876 and 1888 the...
| Highland Railway class F “Duke”Remove | |
|---|---|
| Variant | Standard |
| Built | 1874, 1876-1888 |
| Manufacturers | Dübs & Co.;Lochgorm |
| Wheel arrangement | 2B |
| Gauge | 1435 mm |
| Length | |
| Service mass | 41658 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Highland Railway class F “Duke” Standard Remove |
|---|---|
| Built | 1874, 1876-1888 |
| Manufacturers | Dübs & Co., Lochgorm |
| Wheel arrangement | 4-4-0 (American) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Highland Railway class F “Duke” Standard Remove |
|---|---|
| Wheelbase | 6.55 m |
| Total wheelbase | 15.62 m |
| Service mass | 41.7 t |
| Adhesion mass | 27 t |
| Total mass | 72.1 t |
| Rigid wheelbase | 2.67 m |
| Axle load | 14.5 t |
| Water capacity | 8,184 l |
| Fuel capacity | 4.1 t (coal) |
Boiler
| Property | Highland Railway class F “Duke” Standard Remove |
|---|---|
| Grate area | 1.51 m² |
| Firebox surface | 9.174 m² |
| Tube heating surface | 104.911 m² |
| Evaporative heating surface | 114.085 m² |
| Total heating surface | 114.1 m² |
Power plant
| Property | Highland Railway class F “Duke” Standard Remove |
|---|---|
| Driver diameter | 1,918 mm |
| Boiler pressure | 9.7 bar |
| Expansion type | simple expansion |
| Cylinders | two, 457 x 610 mm |
Power
| Property | Highland Railway class F “Duke” Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 317 kW (431 PS) |
| Starting effort | 54.5 kN |
Calculated values
| Property | Highland Railway class F “Duke” Standard Remove |
|---|---|
| Factor of adhesion | 1 : 4.86 |
| Optimal speed | 35 km/h |
| Power-to-weight ratio | 7.6 kW/t |
| Heating Surface Equivalent | 160.0 m² |
| Cylinder volume/HSE | 1 : 1,251.35 |
| Adhesive weight/Total | 1 : 1.54 |
| Tractive force/Heating surface | 1 : 9.98 |
| Grate area/Heating surface | 1 : 75.55 |
| Firebox/Tube surface | 1 : 11.44 |
