British Rail Class D2/7 facts for kids
Quick facts for kids British Rail Class D2/7 |
|
| Power type | Diesel-mechanical |
|---|---|
| Builder | Hudswell Clarke |
| Serial number | D898–D902, D938–D942 |
| Build date | 1955–1956 |
| Configuration | 0-6-0 DM |
| UIC classification | C |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Wheel diameter | 3 ft 6 in (1.067 m) |
| Locomotive weight | 36.35 long tons (36.93 t) |
| Prime mover | Gardner 8L3 |
| Transmission | Mechanical, SSS Powerflow three-speed gearbox |
| Multiple working | Not fitted |
| Top speed | 14 mph (23 km/h) |
| Power output | Engine: 204 bhp (152 kW) |
| Tractive effort | 16,100 lbf (71.6 kN) |
| Train heating | None |
| Train brakes | None |
| Career | British Railways |
| Class | D2/7; later 2/14; no TOPS class |
| Number | 11116–11120, 11144–11148; D2500–D2509 from 1958 to 1962 |
| Axle load class | Route availability 4 |
| Retired | 1967 |
| Disposition | All scrapped |
The British Rail Class D2/7 was a type of diesel locomotive used by British Rail in England. These trains were built in the mid-1950s. They were known for their special mechanical gearbox.
Contents
Building These Locomotives
These locomotives were built by a company called Hudswell Clarke. They were made between 1955 and 1956. Each D2/7 locomotive had an engine made by Gardner.
A total of ten D2/7 locomotives were built. They were given numbers like 11116 to 11120 and 11144 to 11148. Later, their numbers changed to D2500 to D2509.
How the D2/7 Worked
The D2/7 locomotives used a special type of mechanical transmission. This means they had a gearbox, much like a car. It was a three-speed Power-flow SSS gearbox. The "SSS" stood for "synchro-self-shifting." This type of gearbox was a unique feature of trains built by Hudswell Clarke.
These locomotives were designed to be quite powerful for their size. They could produce about 204 horsepower from their engine. Their top speed was around 14 miles per hour (23 km/h). This speed was good for their main job.
What They Were Used For
The British Rail Class D2/7 locomotives were primarily used for shunting. Shunting is the job of moving railway wagons around in train yards. They would connect wagons, move them to different tracks, and help build up trains. Their relatively low top speed was perfect for this kind of work.
They were also used for light freight duties. This meant pulling smaller loads of goods over short distances.
The End of the Line
The D2/7 locomotives did not stay in service for very long. They were all retired by British Rail in 1967. After they were retired, all of them were scrapped. This means they were taken apart and their materials were recycled.
External photographs
See also
In Spanish: British Rail Clase D2/7 para niños
