NBR J class

NBR J Class LNER Classes D29 & D30
Type and origin Power type Steam Designer William P. Reid Builder North British Locomotive Company and NBR Cowlairs Works Build date 1909-1920 Total produced 43 locomotives (16 type D29 & 27 type D30)
Specifications Configuration: ​  • Whyte 4-4-0 Gauge 4 ft 8+1⁄2 in (1,435 mm) Leading dia. 3 ft 6 in (1.07 m) Driver dia. 6 ft 6 in (1.98 m) Length 46 ft 8.5 in (14.24 m) Axle load 18.4 long tons (18.7 t) Loco weight 54.8 long tons (55.7 t) D29, 57.3 long tons (58.2 t) D30/1, 57.8 long tons (58.7 t) D30/2 Tender weight 46.0 long tons (46.7 t) Fuel type coal Firebox: ​  • Grate area 21.13 square feet (1.963 m2) Boiler 5 ft 0 in (1.52 m) diameter Boiler pressure 190 psi (1.3 MPa) D29, 165 psi (1.14 MPa) D30 Heating surface: ​  • Firebox 139.7 square feet (12.98 m2)  • Tubes 1,478.3 square feet (137.34 m2) D29, 871.3 square feet (80.95 m2) D30/1 677.0 square feet (62.90 m2) D30/2 Cylinders 2 Cylinder size 19 in × 26 in (480 mm × 660 mm) D29, 20 in × 26 in (510 mm × 660 mm) D30 Valve gear Stephenson
Performance figures Tractive effort 19,434 lbf (86.45 kN) D29 18,700 lbf (83 kN) D30
Career Operators NBR, LNER, BR Class NBR J; LNER D29 and D30 Power class BR: 3P Numbers 243-245, 338-340, 359-363, 400, 409-428, 497-501, 895-899, 990 Nicknames Scott class Retired 1960 Disposition All engines scrapped

The NBR J Class (LNER Classes D29 & D30), commonly known as the Scott class, were a class of

Overview

The Original J Class locomotives were based on the

Six locomotives were built in 1909 by the North British Locomotive Company and a further ten were built in 1911 by the North British Railway at its Cowlairs railway works, followed by two further identical locomotives with superheaters.^[1] The NBR always referred to these locomotives as J Class, but the LNER classified the initial 16 locomotives D29, and the two superheated locomotives as D30.^[2] A further 25 superheated locomotives were built between 1914 and 1920 and the LNER classified these as D30/2.^[3]

Accidents and incidents

• On 3 January 1917, locomotive No. 421 Jingling Geordie overran signals and was in a head-on collision with an express passenger train at Ratho, Lothian. Twelve people were killed and 44 were seriously injured. Irregular operating procedures were a major contributory factor in the accident. These were subsequently stopped.^[4]

• On 10 December 1937, No. 9896 Dandie Dinmont was hauling a
  Glasgow Queen Street express train whine it was involved in an accident at Castlecary, North Lanarkshire. The train was running late in whiteout conditions, when another express train, hauled by LNER Class A1 4-6-2 No. 2744 Grand Parade, plowed into the back the first express. 35 people were killed and another 179 people were injured. ^[5][6][7][8]

British Railways numbers[9] were:

• D29, 62401-62413 (with gaps)
• D30, 62417-62442 (62433 missing)

NBR no. 898 was named after

Wikimedia Commons has media related to NBR J Class / LNER Classes D29 & D30.