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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...
General
| Property | Bristol & Exeter Pearson 9 feet 4-2-4T as built |
|---|---|
| Built | 1853 |
| Manufacturers | Rothwell & Co. |
| Wheel arrangement | 4-2-4T (Huntington) |
| Gauge | 2,140 mm (GWR broad gauge) |
Dimensions and weights
| Property | Bristol & Exeter Pearson 9 feet 4-2-4T as built |
|---|---|
| Wheelbase | 7.57 m |
| Rigid wheelbase | 1.75 m |
| Service weight | 42.7 t |
| Water capacity | 6,500 l |
| Fuel capacity | 2 t (coal) |
Boiler
| Property | Bristol & Exeter Pearson 9 feet 4-2-4T as built |
|---|---|
| Grate area | 11.613 m² |
| Evaporative heating surface | 99.871 m² |
| Total heating surface | 99.9 m² |
Power plant
| Property | Bristol & Exeter Pearson 9 feet 4-2-4T as built |
|---|---|
| Driver diameter | 2,743 mm |
| Boiler pressure | 8.3 bar |
| Expansion type | simple expansion |
| Cylinders | two, 419 x 610 mm |
Power
| Property | Bristol & Exeter Pearson 9 feet 4-2-4T as built |
|---|---|
| Power source | steam |
| Estimated power | 261 kW (355 PS) |
| Top speed | 129 km/h |
| Starting effort | 27.4 kN |
Calculated values
| Property | Bristol & Exeter Pearson 9 feet 4-2-4T as built |
|---|---|
| Optimal speed | 58 km/h |
| Power-to-weight ratio | 6.1 kW/t |
| Tractive force/Heating surface | 1 : 5.74 |
| Grate area/Heating surface | 1 : 8.60 |
