LMS Stanier Class 8F 8233

LMS 8233

48773 on display inside the Engine House on the Severn Valley Railway.

Type and origin Power type Steam Designer William Stanier Builder North British Locomotive Company Serial number 24607 Build date 1940

Specifications Configuration 2-8-0 UIC class 1′D h2 Gauge 4 ft 8 1⁄2 in (1,435 mm) standard gauge Leading dia. 3 ft 3 1⁄2 in (1.003 m) Driver dia. 4 ft 8 1⁄2 in (1.435 m) Length 63 ft 0 1⁄2 in (19.22 m) Loco weight 72.10 long tons (73.26 t; 80.75 short tons) Fuel type Coal Fuel capacity 9 long tons (9.1 t; 10.1 short tons) Water cap 4,000 imp gal (18,000 l; 4,800 US gal) Firebox:  • Firegrate area 28 1⁄2 sq ft (2.65 m2) Boiler LMS type 3C Boiler pressure 225 lbf/in2 (1.55 MPa) Cylinders Two, outside Cylinder size 18 1⁄2 in × 28 in (470 mm × 711 mm) Valve gear Walschaerts Valve type Piston valves

Performance figures Tractive effort 32,440 lbf (144.30 kN)

Career Operators London, Midland and Scottish Railway → War Department → Iranian State Railways → Longmoor Military Railway → British Railways Power class LMS & BR: 7F, later 8F Numbers LMS: 8233 WD: 307 ISR: 41-109 LMR: 500 BR: 48773 Axle load class Route Availability 6 Withdrawn 4 August 1968 Current owner The Stanier 8F Locomotive Society Disposition Static Display

LMS Stanier Class 8F No. 8233, War Department Nos. 307, and later 70307, Iranian State Railways No. 41-109, Longmoor Military Railway 500, British Railways No. 48773, is a preserved British steam locomotive. Its owners claim that it is "possibly Britain's most travelled preserved locomotive".

8233 was originally built in 1940 by the North British Locomotive Company of Glasgow, Works No. 24607 on the orders of the War Department, which had adopted the LMS Stanier Class 8F as its own standard. However, the Fall of France saw that it was not sent to mainland Europe with the British Expeditionary Force, as originally intended. Instead, it became LMS No. 8233 and was based out of Toton, Holbeck and Westhouses sheds.

In 1941, No. 8233 was requisitoned by the War Department and sent to Persia (Iran), becoming Iranian State Railways No. 41-109, during which time, it derailed following a collision with a camel. In 1944, it was converted to oil-firing. In 1948 it was at Suez, needing a new firebox, and was almost scrapped, but was then returned to England in 1952 and overhauled at Derby Works. In 1954, the engine was not needed in the Middle East and went instead to the Longmoor Military Railway as WD. No. 500.