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Bristol & Exeter Pearson 9 feet 4-2-4T
The broad gauge Bristol & Exeter Railway took over the “Flying Dutchman”, which started from London-Paddington, on the last section between Bristol and Exeter. To accommodate this fastest train in the world, eight tan...
| Bristol & Exeter Pearson 9 feet 4-2-4TRemove | |
|---|---|
| Variant | rebuilt 8 ft 10 in |
| Built | 1876 |
| Manufacturers | Swindon |
| Wheel arrangement | 2A2 t |
| Gauge | 2140 mm |
| Length | 10211 mm |
| Service mass | 50498 kg |
| Top speed | 129 km/h |
| Power | |
| Engine |
General
| Property | Bristol & Exeter Pearson 9 feet 4-2-4Trebuilt 8 ft 10 in |
|---|---|
| Built | 1876 |
| Manufacturers | Swindon |
| Wheel arrangement | 4-2-4T (Huntington) |
| Gauge | 2,140 mm |
Dimensions and weights
| Property | Bristol & Exeter Pearson 9 feet 4-2-4Trebuilt 8 ft 10 in |
|---|---|
| Length | 10.21 m |
| Wheelbase | 7.77 m |
| Service mass | 50.5 t |
| Adhesion mass | 18.8 t |
| Rigid wheelbase | 1.68 m |
| Axle load | 18.8 t |
| Water capacity | 6,500 l |
| Fuel capacity | 2 t (coal) |
Boiler
| Property | Bristol & Exeter Pearson 9 feet 4-2-4Trebuilt 8 ft 10 in |
|---|---|
| Grate area | 2.146 m² |
| Firebox surface | 13.564 m² |
| Tube heating surface | 101.172 m² |
| Evaporative heating surface | 114.735 m² |
| Total heating surface | 114.7 m² |
Power plant
| Property | Bristol & Exeter Pearson 9 feet 4-2-4Trebuilt 8 ft 10 in |
|---|---|
| Driver diameter | 2,692 mm |
| Boiler pressure | 8.3 bar |
| Expansion type | simple expansion |
| Cylinders | two, 457 x 610 mm |
Power
| Property | Bristol & Exeter Pearson 9 feet 4-2-4Trebuilt 8 ft 10 in |
|---|---|
| Power source | steam |
| Estimated power | 298 kW (405 PS) |
| Top speed | 129 km/h |
| Starting effort | 33.3 kN |
Calculated values
| Property | Bristol & Exeter Pearson 9 feet 4-2-4Trebuilt 8 ft 10 in |
|---|---|
| Factor of adhesion | 1 : 5.54 |
| Optimal speed | 55 km/h |
| Power-to-weight ratio | 5.9 kW/t |
| Heating Surface Equivalent | 182.6 m² |
| Cylinder volume/HSE | 1 : 1,096.43 |
| Adhesive weight/Total | 1 : 2.69 |
| Tractive force/Heating surface | 1 : 6.06 |
| Grate area/Heating surface | 1 : 53.46 |
| Firebox/Tube surface | 1 : 7.46 |
