LNWR Dreadnought Class

Specifications
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.

Type and origin
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

LNWR Dreadnought class
LNWR Dreadnought class
	No. 507 Marchioness of Stafford
Power type
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
Configuration:;
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.
Operators
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.

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