GNR Class N1
LNER Class N1[1]
PowertypeSteam
DesignerHenry Ivatt
BuilderDoncaster Works
Builddate1906–1912
Totalproduction56
Whytetype0-6-2T
UicclassC1 n2t, eleven later C1 h2t
Driverdiameter5 ft 8 in (1.727 m)
Trailingdiameter3 ft 8 in (1.118 m)
Length
  • First: 35 ft 7+1⁄2 in (10.86 m)
  • Remainder: 36 ft 7+1⁄2 in (11.16 m)
Wheelbase
  • First: 23 ft 3 in (7.09 m)
  • Remainder: 23 ft 9 in (7.24 m)
Axleload18.00 long tons (18.29 t)
Weightondrivers
  • First: 51.20 long tons (52.02 t)
  • Remainder: 51.35 long tons (52.17 t)
Locoweight
  • First: 64.70 long tons (65.74 t)
  • Remainder: 65.85 long tons (66.91 t)
FueltypeCoal
Fuelcap4.00 long tons (4.06 t)
Watercap1,600 imp gal (7,300 L)
BoilerLNER diagram 7
Boilerpressure170 psi (1.2 MPa)
Firearea19 sq ft (1.8 m2)
CylindercountTwo, inside
Cylindersize18 by 26 in (457 by 660 mm)
ValvegearStephenson
ValvetypeSlide valves
Tractiveeffort17,900 lbf (79.62 kN)
Operator
OperatorclassGNR/LNER: N1
Fleetnumbers
  • GNR: 190, 1551–1605
  • LNER: 3190, 4551–4605; 9430–9485
  • BR: 69430–69485
AxleloadclassLNER/BR: Route availability 5
Powerclass
  • LNER: 2
  • BR: 2MT
Withdrawndate1947–1959
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 They were all withdrawn from service between 1947 and 1959.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.

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]

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.[dead link]
  • Ian Allan ABC of British Railways Locomotives, 1948 edition, part 4, page 53.