British Rail Class 15
|
|
| BR Class 15 | ||
|---|---|---|
| TOPS numbers | None | |
| Early numbers | D8200-D8243 | |
| Builder | British Thomson-Houston / Clayton | |
| Introduced | 1957-61 | |
| Wheel Arrangement | Bo-Bo | |
| Weight | 68 te | 69 t |
| Height | 12 ft 6 in | 3.8 m |
| Width | 9 ft 2 in | 2.8 m |
| Length | 42 ft | 12.8 m |
| Wheel Dia. | 3 ft 3 in | 1.0 m |
| Bogie Wheel Base | 8 ft 6 in | 2.6 m |
| Bogie Pivot Centres | 22 ft 6 in | 6.9 m |
| Minimum radius | 3 ½ chains | 70.4 m |
| Maximum speed | 60 mph | 97 km/h |
| Engine output | 800 hp 627 hp at rail | 597 kW 468 kW |
| Max. Tractive Effort | 37,500 lbf | 167 kN |
| Cont. Tractive Effort | ||
| Brake type | Vacuum | |
| Brake force | 31 te | 309 kN |
| Route availability | 4 | |
| Fuel Tank | 400 imp gal | 1.8 m³ |
| Multiple Coupling | Blue Star | |
| Heating type | None; through steam pipe | |
| Boiler Water Capacity | None | |
Ordered under the Modernisation Scheme as Type 1 locomotives for local passenger and freight traffic in the London area. Fitted with an off-centre cab. This class was troubled by poor liability and was scrapped relatively early (all withdrawn by March 1971).
The engine was a Paxman 16YHXL with 7 in (178 mm) cylinder bore and 7 ¾ in (197 mm) cylinder stroke. The traction motors were4 x BTH 137BZ, nose suspended with single reduction gear drive. The Main Generator was a BTH RTB10858 and the Auxilary Generator was a BTH RTB7420.