LNWR Dreadnought Class

LNWR Dreadnought class
No. 507 Marchioness of Stafford
Type and origin Power type Steam Designer Francis Webb Builder Crewe Works Serial number 2975–2804, 2886–2905, 3012–3021 Build date 1884–1888 Total produced 40
Specifications Configuration: ​  • Whyte 2-2-2-0  • UIC 1AA n3v Gauge 4 ft 8+1⁄2 in (1,435 mm) Leading dia. 3 ft 6 in (1.067 m) + tyres Driver dia. 6 ft 0 in (1.829 m) + tyres Wheelbase: ​  • Engine 18 ft 1 in (5.51 m)  • Leading 8 ft 5 in (2.57 m)  • Drivers 9 ft 8 in (2.95 m) Loco weight 43 long tons (44 t) Boiler: ​  • Diameter 4 ft 2 in (1.27 m)  • Tube plates 11 ft 0 in (3.35 m) Boiler pressure 175 lbf/in2 (1.21 MPa) Heating surface 1,401.5 sq ft (130.20 m2) Cylinders Three: two HP (outside), one LP (inside) High-pressure cylinder 14 in × 24 in (356 mm × 610 mm) Low-pressure cylinder 30 in × 24 in (762 mm × 610 mm) Valve gear Joy, Slip-eccentric.
Career Operators London and North Western Railway Scrapped December 1903 – July 1905 Disposition All scrapped

The LNWR Dreadnought class was a class of 40 passenger three-cylinder compound 2-2-2-0 locomotives designed by F. W. Webb for the London and North Western Railway, and manufactured by them in their Crewe Works between 1884 and 1888. The railway also commissioned the Beyer, Peacock and Company to construct an additional locomotive of the design for the Pennsylvania Railroad.^[1]