LNER Class V2 4771 Green Arrow

Specifications
Specifications
Configuration:;
• Whyte	2-6-2
• UIC	1′C1′ h3
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	74 in (1,880 mm)
Axle load	22.4 t
Service weight	94.6 t
Total weight	145.1 long tons (147.4 t; 162.5 short tons)
Fuel type	Coal
Water cap.	19,094 L (5,044 U.S. gal)
Boiler pressure	220 psi (1,500 kPa)
Heating surface:
• Tubes	205.87 m2 (2,216.0 sq ft)
• Total surface	205.87 m2 (2,216.0 sq ft)
Superheater:;
• Heating area	63.17 m2 (680.0 sq ft)
Cylinders	3
Cylinder size	470 mm × 660 mm (19 in × 26 in)
Valve gear	Inside: Gresley conjugated, Outside: Walschaerts
Valve type	Piston valves
Train heating	Steam
Loco brake	Steam brake, Vacuum
Train brakes	Vacuum

London and North Eastern Railway 4771 *Green Arrow*
London and North Eastern Railway 4771 Green Arrow
	4771 Green Arrow at Crewe Works.
Power type
Type and origin
Power type	Steam
Designer	Sir Nigel Gresley
Builder	Doncaster Works
Serial number	1837
Build date	June 1936
Configuration:;
Specifications
Configuration:;
• Whyte	2-6-2
• UIC	1′C1′ h3
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	74 in (1,880 mm)
Axle load	22.4 t
Service weight	94.6 t
Total weight	145.1 long tons (147.4 t; 162.5 short tons)
Fuel type	Coal
Water cap.	19,094 L (5,044 U.S. gal)
Boiler pressure	220 psi (1,500 kPa)
Heating surface:
• Tubes	205.87 m2 (2,216.0 sq ft)
• Total surface	205.87 m2 (2,216.0 sq ft)
Superheater:;
• Heating area	63.17 m2 (680.0 sq ft)
Cylinders	3
Cylinder size	470 mm × 660 mm (19 in × 26 in)
Valve gear	Inside: Gresley conjugated, Outside: Walschaerts
Valve type	Piston valves
Train heating	Steam
Loco brake	Steam brake, Vacuum
Train brakes	Vacuum
Power output
Performance figures
Power output	2,382 hp (1,776 kW)
Tractive effort	33,730 lbf (150.0 kN)
Operators
Career
Operators	London and North Eastern Railway; British Railways;
Class	LNER Class V2
Numbers	637 (initial number), 4771 (as officially numbered), renumbered 800, renumbered 60800
Official name	Green Arrow
Retired	August 1962
Current owner	National Railway Museum
Disposition	Static Display, Awaiting Overhaul

The LNER Class V2 2-6-2 steam locomotive, number 4771 Green Arrow was built in June 1936 for the London and North Eastern Railway (LNER) at Doncaster Works to a design of Nigel Gresley. The first-built and sole surviving member of its class, it was designed for hauling express freight and passenger trains and named after an express freight service.