British Rail Class 16

NBL Type 1 British Rail Class 16
No. D8403 in green livery with all-yellow front end at Stratford MPD in 1966
Type and origin Power type Diesel-electric Builder North British Locomotive Company Serial number 27671–27680 Build date 1958 Total produced 10
Specifications Configuration: ​  • UIC Bo′Bo′  • Commonwealth Bo-Bo Gauge 4 ft 8 1⁄2 in (1,435 mm) standard gauge Wheel diameter 3 ft 7 in (1.092 m) Minimum curve 3.5 chains (70.41 m) Wheelbase 28 ft 6 in (8.69 m) Length 42 ft 6 in (12.95 m) Width 8 ft 8+1⁄2 in (2.654 m) Height 12 ft 8 in (3.861 m) Loco weight 68 long tons (69 t; 76 short tons) Fuel capacity 400 imp gal (1,800 L; 480 US gal) Prime mover Paxman 16YHXL Displacement 78.4 L (4,780 cu in) Generator GEC WT 881 (plus GEC auxiliary generator Traction motors 4 x GEC WT 441, nose suspended, with single reduction gear drive Cylinders 16 Cylinder size 7 in (178 mm) bore 7+3⁄4 in (197 mm) stroke Transmission Diesel electric MU working ● Red Circle Train heating None; through steam pipe Train brakes Vacuum
Performance figures Maximum speed 60 mph (97 km/h) Power output Engine: 800 hp (597 kW) At rail: 627 hp (468 kW) Tractive effort Maximum: 42,000 lbf (186.8 kN) Brakeforce 31 long tons-force (310 kN)
Career Operators British Railways Numbers D8400–D8409 Axle load class Route availability 4 Retired 1968 Disposition All scrapped

The British Rail Class 16, originally known as the North British Type 1 was a type of diesel locomotive ordered under British Railways' 1955 Modernisation Plan. Like other Type 1 designs, they were relatively small locomotives intended primarily for local freight traffic.