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Great Western Railway class 3300 “Bulldog” und 3441 “Bird”
For express trains on more hilly main lines, such as Devon and Cornwall, William Dean envisaged 4-4-0 locomotives with a driving wheel diameter of five feet and eight inches. Based on his Duke class, he built No. 3312...
General
| Property | Great Western Railway class 3300 “Bulldog” und 3441 “Bird” Bulldog superheated |
|---|---|
| Built | 1898-1909 |
| Manufacturers | Swindon |
| Wheel arrangement | 4-4-0 (American) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Great Western Railway class 3300 “Bulldog” und 3441 “Bird” Bulldog superheated |
|---|---|
| Length | 17.13 m |
| Wheelbase | 6.78 m |
| Rigid wheelbase | 2.59 m |
| Total wheelbase | 14.12 m |
| Service weight | 52.6 t |
| Adhesive weight | 35 t |
| Axle load | 17.9 t |
| Total weight | 90 t |
| Water capacity | 15,910 l |
| Fuel capacity | 6.1 t (coal) |
Boiler
| Property | Great Western Railway class 3300 “Bulldog” und 3441 “Bird” Bulldog superheated |
|---|---|
| Grate area | 1.891 m² |
| Firebox surface | 11.316 m² |
| Tube heating surface | 106.374 m² |
| Evaporative heating surface | 117.69 m² |
| Superheater surface | 7.637 m² |
| Total heating surface | 125.3 m² |
Power plant
| Property | Great Western Railway class 3300 “Bulldog” und 3441 “Bird” Bulldog superheated |
|---|---|
| Driver diameter | 1,727 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | simple expansion |
| Cylinders | two, 457 x 660 mm |
Power
| Property | Great Western Railway class 3300 “Bulldog” und 3441 “Bird” Bulldog superheated |
|---|---|
| Power source | steam |
| Estimated power | 783 kW (1,065 PS) |
| Starting effort | 93.7 kN |
Calculated values
| Property | Great Western Railway class 3300 “Bulldog” und 3441 “Bird” Bulldog superheated |
|---|---|
| Factor of adhesion | 1 : 3.66 |
| Optimal speed | 51 km/h |
| Power-to-weight ratio | 14.9 kW/t |
| Heating Surface Equivalent | 189.5 m² |
| Cylinder volume/HSE | 1 : 1,144.01 |
| Adhesive weight/Total | 1 : 1.51 |
| Tractive force/Heating surface | 1 : 15.61 |
| Grate area/Heating surface | 1 : 66.28 |
| Firebox/Tube surface | 1 : 9.40 |
| Total/Superheater | 1 : 15.41 |
