British Rail Class 21
The British Rail Class 21, originally known as the North British Type 2 diesel-electric, was a type of diesel locomotive built by the North British Locomotive Company in Glasgow for British Railways in 1958-1960.
| North British Type 2 diesel-electric British Railways Class 21 | |
| 300px | |
| D6103 at Harringay West in 1959 | |
| Power type | Diesel-electric |
|---|---|
| Builder | North British Locomotive Company |
| Build date | 1958–1960 |
| Total production | 58 |
| Configuration | Bo-Bo |
| UIC classification | Bo'Bo' |
| Gauge | Lua error in package.lua at line 80: module 'Module:Track gauge/data' not found. |
| Wheel diameter | 3 ft 7 in (1.092 m) |
| Minimum curve | 3.5 chains (70 m) |
| Wheelbase | 37 ft 0 in (11.28 m) |
| Length | 51 ft 6 in (15.70 m) |
| Width | 8 ft 8 in (2.64 m) |
| Height | 12 ft 8 in (3.86 m) |
| Locomotive weight | 72.50 long tons (73.7 t) |
| Fuel capacity | 460 imp gal (2,100 L; 550 US gal) |
| Prime mover | MAN L12V18/21S |
| Traction motors | GEC WT440, 4 off |
| Transmission | DC generator, DC traction motors |
| Multiple working | D6100–D6137: ● Red circle D6138–D6157: ★ Blue star |
| Top speed | 75 mph (121 km/h) |
| Power output | Engine: 1,000 hp (746 kW) or 1,100 hp (820 kW) |
| Tractive effort | Maximum: 45,000 lbf (200.2 kN) |
| Train heating | Spanner 1,500 pounds (680 kg) per hour Steam generator |
| Locomotive brakeforce | 50 long tons-force (500 kN) |
| Train brakes | Vacuum |
| Career | British Railways |
| Number | D6100–D6157 |
| Axle load class | Route availability 6 (5 from 1969) |
| Retired | 1967–1968 |
| Disposition | 20 rebuilt to class 29, remainder scrapped |
- This is article is about diesel locomotives built 1958-1960. For 2007-era locomotives, see Vossloh G1206.
Starting in 2007, the classification has been reused for new Vossloh G1206 acquired by Euro Cargo Rail/EWS.
