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British Rail class 20 and English Electric type 1
The Class 20, officially known as the English Electric Type 1, was the first mass-produced British mainline diesel locomotive. It was at the top end of power class 1 with a maximum of 1,000 hp and was intended for lig...
| British Rail class 20 and English Electric type 1Remove | |
|---|---|
| Variant | Standard |
| Built | 1957-1962, 1965-1968 |
| Manufacturers | English Electric;Robert Stephenson & Hawthorns |
| Wheel arrangement | BoBo |
| Gauge | 1435 mm |
| Length | 14256 mm |
| Service mass | 73155 kg |
| Top speed | 121 km/h |
| Power | |
| Engine | English Electric 8SVT Mk.II |
General
| Property | British Rail class 20 and English Electric type 1 Standard Remove |
|---|---|
| Built | 1957-1962, 1965-1968 |
| Manufacturers | English Electric, Robert Stephenson & Hawthorns |
| Wheel arrangement | B-B |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | British Rail class 20 and English Electric type 1 Standard Remove |
|---|---|
| Length | 14.26 m |
| Wheelbase | 9.91 m |
| Service mass | 73.2 t |
| Adhesion mass | 73.2 t |
| Rigid wheelbase | 2.59 m |
| Axle load | 18.3 t |
Power plant
| Property | British Rail class 20 and English Electric type 1 Standard Remove |
|---|---|
| Engine | English Electric 8SVT Mk.II |
| Engine type | V8 diesel |
Power
| Property | British Rail class 20 and English Electric type 1 Standard Remove |
|---|---|
| Power source | diesel-electric |
| Indicated power | 746 kW (1,014 PS) |
| Top speed | 121 km/h |
| Starting effort | 186.8 kN |
Calculated values
| Property | British Rail class 20 and English Electric type 1 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 3.84 |
| Power-to-weight ratio | 10.2 kW/t |
| Adhesive weight/Total | 1 : 1.00 |
