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Great Western Railway Klassen 4100 “Badminton”, 4120 “Atbara” and 4149 “Flower”
Based on the Duke class, William Dean developed another 4-4-0 locomotive with larger wheels to be used on flatter routes with express trains. It can be described as a smaller-wheeled sister model to the Bulldog class ...
| Great Western Railway Klassen 4100 “Badminton”, 4120 “Atbara” and 4149 “Flower”Remove | |
|---|---|
| Variant | |
| Built | 1897-1899 |
| Manufacturers | Swindon |
| Wheel arrangement | 2B |
| Gauge | 1435 mm |
| Length | |
| Service mass | 52987 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Great Western Railway Klassen 4100 “Badminton”, 4120 “Atbara” and 4149 “Flower”Remove |
|---|---|
| Built | 1897-1899 |
| Manufacturers | Swindon |
| Wheel arrangement | 4-4-0 (American) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Great Western Railway Klassen 4100 “Badminton”, 4120 “Atbara” and 4149 “Flower”Remove |
|---|---|
| Wheelbase | 7.09 m |
| Service mass | 53 t |
| Adhesion mass | 32.9 t |
| Total mass | 86 t |
| Rigid wheelbase | 2.74 m |
| Axle load | 17.3 t |
| Water capacity | 13,639 l |
| Fuel capacity | 5.1 t (coal) |
Boiler
| Property | Great Western Railway Klassen 4100 “Badminton”, 4120 “Atbara” and 4149 “Flower”Remove |
|---|---|
| Grate area | 1.7 m² |
| Firebox surface | 11.269 m² |
| Tube heating surface | 77.082 m² |
| Evaporative heating surface | 88.351 m² |
| Total heating surface | 88.4 m² |
Power plant
| Property | Great Western Railway Klassen 4100 “Badminton”, 4120 “Atbara” and 4149 “Flower”Remove |
|---|---|
| Driver diameter | 2,032 mm |
| Boiler pressure | 12.4 bar |
| Expansion type | simple expansion |
| Cylinders | two, 457 x 660 mm |
Power
| Property | Great Western Railway Klassen 4100 “Badminton”, 4120 “Atbara” and 4149 “Flower”Remove |
|---|---|
| Power source | steam |
| Estimated power | 503 kW (684 PS) |
| Starting effort | 71.7 kN |
Calculated values
| Property | Great Western Railway Klassen 4100 “Badminton”, 4120 “Atbara” and 4149 “Flower”Remove |
|---|---|
| Factor of adhesion | 1 : 4.50 |
| Optimal speed | 43 km/h |
| Power-to-weight ratio | 9.5 kW/t |
| Heating Surface Equivalent | 144.7 m² |
| Cylinder volume/HSE | 1 : 1,498.59 |
| Adhesive weight/Total | 1 : 1.61 |
| Tractive force/Heating surface | 1 : 16.94 |
| Grate area/Heating surface | 1 : 51.97 |
| Firebox/Tube surface | 1 : 6.84 |
