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Highland Railway classes C “Small Ben” and U “Large Ben”
Starting in 1898, Peter Drummond had eight 4-4-0 locomotives built by Dübs, which were intended for passenger and express service and had inside cylinders. They were named after Scottish mountains, all of which start ...
| Highland Railway classes C “Small Ben” and U “Large Ben”Remove | |
|---|---|
| Variant | C (Small Ben) |
| Built | 1898-1906 |
| Manufacturers | Dübs & Co.;Lochgorm;North British |
| Wheel arrangement | 2B |
| Gauge | 1435 mm |
| Length | |
| Service mass | 46738 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Highland Railway classes C “Small Ben” and U “Large Ben”C (Small Ben) |
|---|---|
| Built | 1898-1906 |
| Manufacturers | Dübs & Co., Lochgorm, North British |
| Wheel arrangement | 4-4-0 (American) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Highland Railway classes C “Small Ben” and U “Large Ben”C (Small Ben) |
|---|---|
| Wheelbase | 6.86 m |
| Total wheelbase | 13.45 m |
| Service mass | 46.7 t |
| Adhesion mass | 31.7 t |
| Total mass | 84.8 t |
| Rigid wheelbase | 2.74 m |
| Axle load | 16.4 t |
| Water capacity | 13,639 l |
Boiler
| Property | Highland Railway classes C “Small Ben” and U “Large Ben”C (Small Ben) |
|---|---|
| Grate area | 1.886 m² |
| Firebox surface | 10.87 m² |
| Tube heating surface | 98.57 m² |
| Evaporative heating surface | 109.44 m² |
| Total heating surface | 109.4 m² |
Power plant
| Property | Highland Railway classes C “Small Ben” and U “Large Ben”C (Small Ben) |
|---|---|
| Driver diameter | 1,829 mm |
| Boiler pressure | 12.1 bar |
| Expansion type | simple expansion |
| Cylinders | two, 464 x 660 mm |
Power
| Property | Highland Railway classes C “Small Ben” and U “Large Ben”C (Small Ben) |
|---|---|
| Power source | steam |
| Estimated power | 485 kW (659 PS) |
| Starting effort | 79.6 kN |
Calculated values
| Property | Highland Railway classes C “Small Ben” and U “Large Ben”C (Small Ben) |
|---|---|
| Factor of adhesion | 1 : 3.91 |
| Optimal speed | 37 km/h |
| Power-to-weight ratio | 10.4 kW/t |
| Heating Surface Equivalent | 163.8 m² |
| Cylinder volume/HSE | 1 : 1,360.92 |
| Adhesive weight/Total | 1 : 1.47 |
| Tractive force/Heating surface | 1 : 15.19 |
| Grate area/Heating surface | 1 : 58.03 |
| Firebox/Tube surface | 1 : 9.07 |
