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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 ...
General
| Property | Great Western Railway Klassen 4100 “Badminton”, 4120 “Atbara” and 4149 “Flower” Remove |
|---|---|
| Built | 1900-1902 |
| Manufacturers | Swindon |
| Wheel arrangement | 4-4-0 (American) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Great Western Railway Klassen 4100 “Badminton”, 4120 “Atbara” and 4149 “Flower” Remove |
|---|---|
| Wheelbase | 7.09 m |
| Rigid wheelbase | 2.74 m |
| Service weight | 52.4 t |
| Adhesive weight | 34.1 t |
| Axle load | 17.7 t |
| Total weight | 90 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 | 1.977 m² |
| Firebox surface | 11.529 m² |
| Tube heating surface | 143.062 m² |
| Evaporative heating surface | 154.591 m² |
| Total heating surface | 154.6 m² |
Power plant
| Property | Great Western Railway Klassen 4100 “Badminton”, 4120 “Atbara” and 4149 “Flower” Remove |
|---|---|
| Driver diameter | 2,045 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 | 597 kW (812 PS) |
| Starting effort | 71.2 kN |
Calculated values
| Property | Great Western Railway Klassen 4100 “Badminton”, 4120 “Atbara” and 4149 “Flower” Remove |
|---|---|
| Factor of adhesion | 1 : 4.70 |
| Optimal speed | 51 km/h |
| Power-to-weight ratio | 11.4 kW/t |
| Heating Surface Equivalent | 212.2 m² |
| Cylinder volume/HSE | 1 : 1,021.69 |
| Adhesive weight/Total | 1 : 1.54 |
| Tractive force/Heating surface | 1 : 9.62 |
| Grate area/Heating surface | 1 : 78.19 |
| Firebox/Tube surface | 1 : 12.41 |
