British Rail Class D16/2

British Rail Class D16/2
10203 approaching Bletchley, 1954
Type and origin
Power typeDiesel-electric
BuilderBR Ashford Works (2), Brighton Works (1)
Order numberSR Order 3441
Build date1950 (10201/10202)
1954 (10203)
Specifications
Configuration:
​
 • UIC1Co'Co1'
Gauge4 ft 8 1⁄2 in (1,435 mm)
Wheel diameterDriving: 3 ft 7 in (1.092 m)
Idling: 3 ft 1 in (0.940 m)
Minimum curve4.5 chains (91 m)
Wheelbase55 ft 6 in (16.92 m)
Length63 ft 9 in (19.43 m)
Width9 ft 3 in (2.82 m)
Height13 ft 1 in (3.99 m)
Loco weight133 long tons (135 t)
Fuel capacity1,150 imp gal (5,200 L; 1,380 US gal)
Prime moverEnglish Electric 16SVT
Traction motorsEnglish Electric 526A, 6 off
Train heatingSteam generator
Train brakesVacuum
Performance figures
Top speed90 mph (140 km/h)
Power output10201/2: 1,750 bhp (1,300 kW)
10203: 2,000 bhp (1,500 kW)
Tractive effort10201/2: 48,000 lbf (213.5 kN)
Career
Railroad(s)British Railways
Number10201–10203
Axle load classRA 6

British Railways Class D16/2 was a class of prototype diesel locomotive built by BR at Ashford Works and introduced in 1950–1951, with a third example being introduced in 1954. They had been designed by Oliver Bulleid for the Southern Railway before the 1948 nationalisation but did not appear until after nationalisation. The diesel engine and transmission were supplied by the English Electric company but the Bulleid influence was obvious. The box-like body style closely resembled Bulleid's electric locomotives and was quite different from the usual English Electric style, typified by British Rail Class D16/1.


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