0-6-2T locomotives designed by Sir Nigel Gresley for suburban services in and around London
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GNR Class N2 LNER Class N2[1]
No. 9505 at Harringay
Type and origin
Power type
Steam
Designer
Nigel Gresley
Builder
N2/1: Doncaster Works (10), North British Locomotive Company (50)
N2/2: Beyer, Peacock and Company (12)
N2/3: Doncaster Works (6), Yorkshire Engine Company (6)
N2/4: Hawthorn Leslie and Company (20), Yorkshire Engine Company (3)
Build date
1920–1929
Total produced
107 (N2/1: 60, N2/2: 12, N2/3: 12, N2/4: 23)
Specifications
Configuration:
• Whyte
0-6-2T
• UIC
C1 h2t
Gauge
4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.
5 ft 8 in (1.727 m)
Trailing dia.
3 ft 8 in (1.118 m)
Wheelbase
23 ft 9 in (7.24 m)
Length
N2/1, /2, /3: 37 ft 10+3⁄4 in (11.55 m)
N2/4: 37 ft 11+3⁄4 in (11.576 m)
Axle load
19.00–20.00 long tons (19.30–20.32 t; 21.28–22.40 short tons)
Adhesive weight
55.75–56.90 long tons (56.64–57.81 t; 62.44–63.73 short tons)
Loco weight
70.25–71.45 long tons (71.38–72.60 t; 78.68–80.02 short tons)
Fuel type
Coal
Fuel capacity
4.00 long tons (4.06 t; 4.48 short tons)
Water cap.
2,000 imp gal (9,100 L; 2,400 US gal)
Firebox:
• Grate area
19.00 sq ft (1.765 m2)
Boiler
LNER diagram 7
Boiler pressure
170 psi (1.2 MPa)
Cylinders
Two, inside
Cylinder size
19 in × 26 in (483 mm × 660 mm)
Valve gear
Stephenson
Valve type
8-inch (203 mm) piston valves
Performance figures
Tractive effort
19,945 lbf (88.72 kN)
Career
Operators
Great Northern Railway
London and North Eastern Railway
British Railways
Class
GNR/LNER: N2
Power class
LNER: 2
BR: 3MT
Axle load class
LNER/BR: Route availability 6
Withdrawn
1955–1962
Disposition
One preserved, remainder scrapped
The Great Northern Railway (GNR) Class N2 is an 0-6-2T side tank steam locomotive designed by Nigel Gresley and introduced in 1920. Further batches were built by the London and North Eastern Railway from 1925. They had superheaters and piston valves driven by Stephenson valve gear.
Some locomotives were fitted with condensing apparatus for working on the Metropolitan Railway Widened Lines between King's Cross and Moorgate.
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