British Rail Class D3/11

Type and origin
Power type	Diesel-electric
Builder	British Railways’ Swindon Works
Order number	Swindon Lot 346
Build date	1948
Total produced	6

Specifications
Configuration	0-6-0 DE
UIC class	C
Gauge	4 ft 8 ¹⁄₂ in (1,435 mm)
Wheel diameter	4 ft 0 ¹⁄₂ in (1.232 m)
Minimum curve	3.5 chains (70 m)
Wheelbase	11 ft 6 in (3.51 m)
Length	29 ft 1 ¹⁄₂ in (8.88 m)
Width	9 ft 0 in (2.74 m)
Height	12 ft 5 ⁵⁄₈ in (3.80 m)
Loco weight	46.45 long tons (47.20 t)
Fuel capacity	659 imp gal (3,000 l; 791 US gal)
Lubricant cap	65 imp gal (300 l; 78 US gal)
Coolant cap	140 imp gal (640 l; 170 US gal)
Prime mover	English Electric 6KT
Generator	English Electric 801B
Traction motors	English Electric 506B, 2 off
MU working	Not fitted
Train heating	None
Loco brake	Air
Train brakes	None

Performance figures
Maximum speed	20 mph (32 km/h)
Power output	Engine: 350 bhp (260 kW), At rail: 194 hp (145 kW)
Tractive effort	38,500 lbf (171.3 kN)

Career
Operators	British Railways
Class	D3/11; later 3/11
Numbers	15101–15106
Axle load class	Route availability 5
Retired	1967
Disposition	All scrapped

British Rail Class D3/11 was a locomotive commissioned by the Great Western Railway, but delivered to its successor British Rail in England. It was a diesel powered locomotive in the pre-TOPS period.

Statistics

Great Western number range: 502-507 (not carried)
BR 1948 number range: 15101-15106
Former class codes: D3/11, later 3/11
Built by: BR Swindon
Years introduced: 1948
Wheel arrangement: 0-6-0
Weight: 46 long tons 9 cwt
Height: 12 ft 5⅝ in
Length: 29 ft 1½ in
Width: 9 ft 0 in (2.74 m)
Wheelbase: 11 ft 6 in (3.51 m)
Wheel diameter: 4 ft 0½ in
Min curve negotiable: 3½ chains
Engine type: English Electric 6KT
Engine output: 350 hp (260 kW)
Power at rail: 194 hp (145 kW)
Tractive effort: 33,500 lbf (149,000 N)
Cylinder bore: 10 in
Cylinder stroke: 12 in
Maximum speed: 20 mph (32 km/h)
Brake type: Air on loco, no train brakes
Route availability: 5
Heating type: Not fitted
Multiple coupling type: Not fitted
Main generator type: EE801B
Aux generator type: EE??
Traction motor type: EE506B
No of traction motors: 2
Gear ratio: 21.7:1
Fuel tank capacity: 659 gal
Cooling water capacity: 140 gal
Lub oil capacity: 65 gal
Sanding equipment: Pneumatic

References

Strickland, David C. (1982). Locomotive Directory, every single one there has ever been. Camberely, Surrey: Diesel & Electric Group. p. 62. ISBN 0-906375-10-X.

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 D3/11

Statistics

References

See also