LSWR T1 class

LSWR T1 class
T1 class Nº 1 at Winchester (City) station, October 1947
Type and origin Power type Steam Designer William Adams Builder LSWR Nine Elms Locomotive Works Build date 1888–1896 Total produced 50
Specifications Configuration: ​  • Whyte 0-4-4T  • UIC B2'nt Gauge 4 ft 8 1⁄2 in (1,435 mm) Driver dia. 5 ft 7 in (1.702 m) Trailing dia. 3 ft 0 in (0.914 m) Wheelbase 23 ft 0 in (7.01 m) Length 35 ft 1 1⁄2 in (10.71 m) Axle load 18.50 long tons (18.80 t) Adhesive weight 35.95 long tons (36.53 t) Loco weight 55.00 long tons (55.88 t) Fuel type Coal Fuel capacity 2.00 long tons (2.03 t) Water cap 1,200 imperial gallons (5,500 l; 1,400 US gal) Boiler pressure 160 psi (1.10 MPa) Cylinders Two, inside Cylinder size 18 in × 26 in (457 mm × 660 mm)
Performance figures Tractive effort 17,099 lbf (76.1 kN)
Career Operators LSWR · SR · BR Class T1 Power class LSWR/SR: K, BR: 1P Withdrawn 1931–1951 Disposition All but a single boiler scrapped

The London and South Western Railway T1 class was a class of fifty 0-4-4T steam tank locomotives designed for suburban passenger work, designed by William Adams and built between 1888–1896.

The class were numbered 1–20, 61–80 and 358–367. In typical London and South Western Railway fashion, they reused the numbers of retired or duplicated engines. The class remained largely intact until the 1930s, being scheduled to be withdrawn by 1940, however due the Second World War a few remained in traffic (around eight examples) until the early British Railways years, the final one (30007) being withdrawn in May 1951.

No complete T1 locomotives were saved for preservation, however a boiler from a withdrawn locomotive was found in a factory in Essex and was subsequently purchased for use on a 'new' T1 locomotive. Since September 2004, this boiler has been stored on the Avon Valley Railway.