| British Rail Class D2/7 | |
|---|---|
| A Hudswell Clarke industrial diesel locomotive similar to the 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 |
British Rail Class D2/7 was a locomotive commissioned by British Rail in England. It was a diesel powered locomotive in the pre-TOPS period built by Hudswell Clarke with a Gardner engine. The mechanical transmission, using a scoop control fluid coupling and three-speed Power-flow SSS (synchro-self-shifting) gearbox [1], was a Hudswell Clarke speciality.
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The D2/7 was of old-fashioned appearance with a full-height engine casing and a small, steam locomotive-type chimney. The later British Rail Class D2/12, although mechanically similar, was of more modern appearance.
A kit is available from Invertrain [2] in 7mm Scale ( O Gauge)
Mercian Models [3] make kits for this locomotive and the very similar industrial version, in both 4mm and 7mm scale.
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