GNR Class N1

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GNR Class N1
LNER Class N1 [1]
Bradford Hammerton Street Locomotive Depot geograph-2370243-by-Ben-Brooksbank.jpg
Nos. 9459 and 9479 at Bradford Hammerton Street Depot in 1947
Type and origin
Power typeSteam
Designer Henry Ivatt
Builder Doncaster Works
Build date1906–1912
Total produced56
Specifications
Configuration:
   Whyte 0-6-2T
   UIC C1 n2t, eleven later C1 h2t
Gauge 4 ft 8+12 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+12 in (10.86 m)
  • Remainder:36 ft 7+12 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 typeCoal
Fuel capacity4.00 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 m2)
BoilerLNER diagram 7
Boiler pressure170 psi (1.2 MPa)
Cylinders Two, inside
Cylinder size 18 in × 26 in (457 mm × 660 mm)
Valve gear Stephenson
Valve typeSlide valves
Performance figures
Tractive effort 17,900 lbf (79.62 kN)
Career
Operators
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 classLNER/BR: Route availability 5
Withdrawn1947–1959
DispositionAll scrapped

The Great Northern Railway (GNR) Class N1 was 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 They were all withdrawn from service between 1947 and 1959.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 have survived.

No. 9463 fitted with condensing gear at Harringay 11 October 1946 Harringay with ex-GN Ivatt 0-6-2T geograph-2882454-by-Ben-Brooksbank.jpg
No. 9463 fitted with condensing gear at Harringay 11 October 1946

Most 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, Crewe Works built an armoured train which used a Class N1 engine. The engine was covered by a 14mm steel plate, and featured observation apertures to the front and side, closed by sliding steel shutters. [2] Two of the Ivatt tank engines No. 1587 and No. 1590 were loaned to Crewe to be fitted with armor plating and were named HMT Norna and HMT Alice respectively. They were sold back to the LNER in 1923 and had their armor plating removed. [3]

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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.
  3. Talbot, Edward (1987). A Pictorial Tribute to Crewe Works in the Age of Steam. Hayes/Oxford Publishing. pp. 93–94. Retrieved 27 September 2020.