British Rail Class D2/7

A Hudswell Clarke industrial diesel locomotive similar to the British Rail Class D2/7

Type and origin
Power type	Diesel-mechanical
Builder	Hudswell Clarke
Serial number	D898–D902, D938–D942
Build date	1955–1956

Specifications
Configuration	0-6-0 DM
UIC class	C
Gauge	4 ft 8 ¹⁄₂ in (1,435 mm) standard gauge
Wheel diameter	3 ft 6 in (1.067 m)
Loco weight	36.35 long tons (36.93 t; 40.71 short tons)
Prime mover	Gardner 8L3
Transmission	Mechanical, SSS Powerflow three-speed gearbox
MU working	Not fitted
Train heating	None
Train brakes	None

Performance figures
Maximum speed	14 mph (23 km/h)
Power output	Engine: 204 bhp (152 kW)
Tractive effort	16,100 lbf (71.6 kN)

Career
Operators	British Railways
Class	D2/7; later 2/14; no TOPS class
Numbers	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.

Appearance

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.

Modelling

A kit is available from Invertrain ^[2] in 7 mm Scale ( O Gauge)

Mercian Models ^[3] make kits for this locomotive and the very similar industrial version, in both 4 mm and 7 mm scale.

References

Sources

Ian Allan ABC of British Railways Locomotives, winter 1962/3 edition, page 199

British railway locomotives and miscellany, 1948 to present

Diesel shunters	01 01/5 02 03 04 05 06 07 08 09 10 11 12 13

Diesel shunters (pre-TOPS)	11001 11104 15107 13000 D1/1 D1/2 D1/3 D1/4 D2/1 D2/2 D2/3 D2/4 D2/5 D2/6 D2/7 D2/8 D2/9 D2/10 D2/11 D2/12 D3/1 D3/2 D3/3 D3/4 D3/5 D3/6 D3/7 D3/8 D3/9 D3/10 D3/11 D3/12 D3/13 D3/14

Main-line diesels:	14 15 16 17 18 20 21 (I) 21 (II) 22 (I) 23 24 25 26 27 28 29 30 31 33 35 37 38 40 41 (I) 41 (II) 41 (III) 42 43 (I) 43 (II) 44 45 46 47 48 (I) 48 (II) 50 51 52 53 55 56 57 58 59 60 61 62 65 66 67 68 70 (II)

Main-line diesels (pre-TOPS)	10000–10001 10100 10201–10203 10800 D8/1 D8/2 D10/1 D10/2 D10/3 D11/1 D11/2 D11/3 D11/4 D11/5 D12/1 D12/2 D12/3 D13/1 D14/1 D14/2 D15/1 D15/2 D16/1 D16/2 D17/1 D17/2 D20/1 D20/2 D22/1 D22/2 D23/1 D25/1 D27/1 D33/1

Electrics	22 (II) 70 (I) 71 72 73 74 75 76 77 80 81 82 83 84 85 86 87 88 (I) 88 (II) 89 90 91 92 93

Electrics (pre-TOPS)	AL1 AL2 AL3 AL4 AL5 AL6 EB1 EE1 EF1 EM1 EM2 ES1 HA HB JA JB

Departmental	97 97/6 Eastern Southern Other Series

Prototypes	15097–15099 18000 18100 D0226/D0227 D0260 D0280 D2999 DHP1 DP1 DP2 GT3 HS4000 Janus Taurus

Steam locomotives	98

Ships	99

Lists: Diesel locomotives Electric locomotives Miscellaneous locomotives Diesel multiple units Electric multiple units Departmental multiple units

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British Rail Class D2/7

Appearance

Modelling

See also

References

Sources