British Rail Class D3/11

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.

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
Top 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
Railroad(s)British Railways
ClassD3/11; later 3/11
Number15101–15106
Axle load classRoute availability 5
Retired1967
DispositionAll scrapped


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