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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...
General
| Property | Highland Railway class F “Duke”Remove |
|---|---|
| Built | 1874, 1876-1888 |
| Manufacturers | Dübs & Co., Lochgorm |
| Wheel arrangement | 4-4-0 (American) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Highland Railway class F “Duke”Remove |
|---|---|
| Wheelbase | 6.55 m |
| Rigid wheelbase | 2.67 m |
| Total wheelbase | 15.62 m |
| Service weight | 41.7 t |
| Adhesive weight | 27 t |
| Axle load | 14.5 t |
| Total weight | 72.1 t |
| Water capacity | 8,184 l |
| Fuel capacity | 4.1 t (coal) |
Boiler
| Property | Highland Railway class F “Duke”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”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”Remove |
|---|---|
| Power source | steam |
| Estimated power | 317 kW (431 PS) |
| Starting effort | 54.5 kN |
Calculated values
| Property | Highland Railway class F “Duke”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 |
