British Rail Class D3/11

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British Rail Class D3/11
Type and origin
Power typeDiesel-electric
BuilderBritish Railways’ Swindon Works
Order numberSwindon Lot 346
Build date1948
Total produced6
Specifications
Configuration:
​
 • Whyte0-6-0 DE
 • UICC
Gauge4 ft 8+1⁄2 in (1,435 mm)
Wheel diameter4 ft 0+1⁄2 in (1.232 m)
Minimum curve3.5 chains (70 m)
Wheelbase11 ft 6 in (3.51 m)
Length29 ft 1+1⁄2 in (8.88 m)
Width9 ft 0 in (2.74 m)
Height12 ft 5+5⁄8 in (3.80 m)
Loco weight46.45 long tons (47.20 t)
Fuel capacity659 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 moverEnglish Electric 6KT
GeneratorEnglish Electric 801B
Traction motorsEnglish Electric 506B, 2 off
MU workingNot fitted
Train heatingNone
Loco brakeAir
Train brakesNone
Performance figures
Maximum speed20 mph (32 km/h)
Power outputEngine: 350 bhp (260 kW),
At rail: 194 hp (145 kW)
Tractive effort38,500 lbf (171.3 kN)
Career
OperatorsBritish Railways
ClassD3/11; later 3/11
Numbers15101–15106
Axle load classRoute availability 5
Retired1967
DispositionAll 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.

See also[]

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