LSWR H16 class

The LSWR H16 class were five 4-6-2 tank locomotives designed by Robert Urie for the London and South Western Railway (LSWR) in 1921–1922. They were the last new design for the LSWR and their only Pacific-type design.

LSWR H16 class
H16 class 4-6-2T No. 30517 takes an empty stock train from Waterloo through Vauxhall on Saturday 25 August 1962
Type and origin Power type Steam Builder LSWR Eastleigh Works Build date November 1921 – February 1922 Total produced 5
Specifications Configuration: ​  • Whyte 4-6-2T  • UIC 2′C1′ h2t Gauge 4 ft 8 ^1⁄2 in (1,435 mm) Leading dia. 3 ft 7 in (1.092 m) Driver dia. 5 ft 7 in (1.702 m) Trailing dia. 3 ft 7 in (1.092 m) Length 46 ft 0 in (14.02 m) Width 9 ft 2 in (2.79 m) Height 13 ft 3 ^1⁄4 in (4.04 m) Axle load 19.80 long tons (20.12 t) Loco weight 96.40 long tons (97.95 t) Fuel type Coal Fuel capacity 3.50 long tons (3.56 t) Water cap 2,000 imp gal (9,100 l; 2,400 US gal) Firebox:  • Firegrate area 27 sq ft (2.5 m^2) Boiler pressure 180 psi (1.24 MPa) Heating surface:  • Tubes and flues 1,267 sq ft (117.7 m^2)  • Firebox 139 sq ft (12.9 m^2) Superheater: ​  • Type Eastleigh (later Maunsell)  • Heating area 231 sq ft (21.5 m^2) Cylinders Two, outside Cylinder size 21 in × 28 in (533 mm × 711 mm)
Performance figures Tractive effort 28,200 lbf (125.4 kN)
Career Operators London and South Western Railway → Southern Railway → British Railways Class LSWR / SR: H16 Power class LSWR/ SR: A BR: 5F (later 6F) Numbers LSWR: 516–520 SR: E516–E520 → 516–520 BR: 30516–30520 Nicknames Green Tanks Withdrawn 1962 Disposition All scrapped

Background

As part of the project to construct a marshalling yard at Feltham in West London, Urie produced two locomotive designs, the G16 "Black Tanks" to shunt the new yard, and the H16 "Green Tanks" to work transfer freights to the London area yards of the other railway companies.

Construction history

Year	Order	Quantity	LSWR numbers	Notes
1921–22	H16	5	516–520

Livery and numbering

LSWR and Southern Railway

When originally built they were numbered 516–520. On passing to the Southern Railway, they had their LSWR numbers prefixed with an ‘E’. The locomotives lost the prefix between 1931–32. The Southern Railway painted the H16 class in passenger green paint, rather than goods engine black.[1]

H16 class 4-6-2T No. 30520 ( on empty stock duty at Clapham Junction 1960.

Post-1948 (nationalisation)

All five engines were passed to British Railway who renumbered them 30516–30520. All were withdrawn in 1962, and scrapped.

References

Notes

1. Russell (1991). p. 262

Bibliography

• Russell, J.H (1991). A Pictorial Record of Southern Locomotives. OPC Haynes. pp. 262–263.