British Rail Class D16/2

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.

British Rail Class D16/2
10203 approaching Bletchley, 1954
Type and origin Power type Diesel-electric Builder BR Ashford Works (2), Brighton Works (1) Order number SR Order 3441 Build date 1950 (10201/10202) 1954 (10203)
Specifications Configuration: ​  • UIC 1Co'Co1' Gauge 4 ft 8 1⁄2 in (1,435 mm) Wheel diameter Driving: 3 ft 7 in (1.092 m) Idling: 3 ft 1 in (0.940 m) Minimum curve 4.5 chains (91 m) Wheelbase 55 ft 6 in (16.92 m) Length 63 ft 9 in (19.43 m) Width 9 ft 3 in (2.82 m) Height 13 ft 1 in (3.99 m) Loco weight 133 long tons (135 t) Fuel capacity 1,150 imp gal (5,200 L; 1,380 US gal) Prime mover English Electric 16SVT Traction motors English Electric 526A, 6 off Train heating Steam generator Train brakes Vacuum
Performance figures Top speed 90 mph (140 km/h) Power output 10201/2: 1,750 bhp (1,300 kW) 10203: 2,000 bhp (1,500 kW) Tractive effort 10201/2: 48,000 lbf (213.5 kN)
Career Railroad(s) British Railways Number 10201–10203 Axle load class RA 6