GNR Class N1

The Great Northern Railway (GNR) Class N1 is an 0-6-2T side tank steam locomotive designed by Henry Ivatt and introduced in 1906. They were all withdrawn from service between 1947 and 1959. None has survived.

No. 9463 fitted with condensing gear at Harringay 11 October 1946

GNR Class N1 LNER Class N1[1]
Nos. 9459 and 9479 at Bradford Hammerton Street Depot in 1947
Type and origin Power type Steam Designer Henry Ivatt Builder Doncaster Works Build date 1906–1912 Total produced 56
Specifications Configuration: ​  • Whyte 0-6-2T  • UIC C1 n2t, eleven later C1 h2t Gauge 4 ft 8 ^1⁄2 in (1,435 mm) Driver dia. 5 ft 8 in (1.727 m) Trailing dia. 3 ft 8 in (1.118 m) Wheelbase First: 23 ft 3 in (7.09 m) Remainder: 23 ft 9 in (7.24 m) Length First: 35 ft 7 ^1⁄2 in (10.86 m) Remainder: 36 ft 7 ^1⁄2 in (11.16 m) Axle load 18.00 long tons (18.29 t) Adhesive weight First: 51.20 long tons (52.02 t) Remainder: 51.35 long tons (52.17 t) Loco weight First: 64.70 long tons (65.74 t) Remainder: 65.85 long tons (66.91 t) Fuel type Coal Fuel capacity 4.00 long tons (4.06 t) Water cap 1,600 imp gal (7,300 l; 1,900 US gal) Firebox:  • Firegrate area 19 sq ft (1.8 m^2) Boiler LNER diagram 7 Boiler pressure 170 psi (1.2 MPa) Cylinders Two, inside Cylinder size 18 in × 26 in (457 mm × 660 mm) Valve gear Stephenson Valve type Slide valves
Performance figures Tractive effort 17,900 lbf (79.62 kN)
Career Operators Great Northern Railway London and North Eastern Railway British Railways Class GNR/LNER: N1 Power class LNER: 2 BR: 2MT Numbers GNR: 190, 1551–1605 LNER: 3190, 4551–4605; 9430–9485 BR: 69430–69485 Axle load class LNER/BR: Route availability 5 Withdrawn 1947–1959 Disposition All scrapped

The majority of the class were fitted with condensing apparatus and worked in the London area, from King's Cross and Hornsey depots, on empty coach trains and on cross-London exchange freight trains.

In 1914, the Crewe works built an armoured train which used a Class N1 engine. The engine was covered by 14mm steel plate, and featured observation apertures to the front and side, closed by sliding steel shutters.[2]

References

1. Boddy et al. 1977, pp. 45, 55–56.
2. Osborne, Mike (2017). If the Kaiser Comes - Defence Against A German Invasion of Britain in the First World War. England: Fonthill Media Limited. p. 90. ISBN 9781781555750.

• Boddy, M. G.; Brown, W. A.; Fry, E. V.; Hennigan, W.; Hoole, Ken; Manners, F.; Neve, E.; Platt, E. N. T.; Proud, P.; Yeadon, W. B. (March 1977). Fry, E. V. (ed.). Locomotives of the L.N.E.R., Part 9A: Tank Engines—Classes L1 to N19. Kenilworth: RCTS. ISBN 0-901115-40-1.
• Casserley, H.C. & Johnston, Stuart W. (1974) [1966]. Locomotives at the Grouping 2: London & North Eastern Railway. Shepperton, Surrey: Ian Allan Limited. p. 73. ISBN 0-7110-0553-2.
• Ian Allan ABC of British Railways Locomotives, 1948 edition, part 4, page 53.

External links

• LNER Encyclopedia