LMS Stanier Class 8F

The London, Midland and Scottish Railway (LMS) Stanier Class 8F is a class of steam locomotives designed for hauling heavy freight. 852 were built between 1935 and 1946 (not all to LMS order), as a freight version of William Stanier's successful Black Five, and the class saw extensive service overseas during and after the Second World War.

LMS Stanier Class 8F
Stanier 8F No. 48476 at Lostock Hall shed, late July 1968
Type and origin
Power typeSteam
DesignerWilliam Stanier
Builder
- (50)
Build date1935–1946
Total produced852
Specifications
Configuration:
  Whyte2-8-0
  UIC1′D h2
Gauge4 ft 8+12 in (1,435 mm) standard gauge
Leading dia.3 ft 3+12 in (1.003 m)
Driver dia.4 ft 8+12 in (1.435 m)
Wheelbase52 ft 7+34 in (16.046 m)
Length63 ft 0+12 in (19.22 m)
Loco weight72.10 long tons (73.26 t; 80.75 short tons)
Fuel typeCoal
Fuel capacity9 long tons (9.1 t; 10.1 short tons)
Water cap.4,000 imp gal (18,000 L; 4,800 US gal)
Firebox:
  Grate area28+12 sq ft (2.65 m2)
BoilerLMS type 3C
Boiler pressure225 lbf/in2 (1.55 MPa)
Heating surface:
  Firebox171 sq ft (15.9 m2)
  Tubes1,479 sq ft (137.4 m2)
Superheater:
  Heating area215–245 sq ft (20.0–22.8 m2)
CylindersTwo, outside
Cylinder size18+12 in × 28 in (470 mm × 711 mm)
Performance figures
Tractive effort32,440 lbf (144.30 kN)
Career
Operators
Power classLMS & BR: 7F, later 8F
Axle load classRoute Availability 6
WithdrawnBR: 1960–1968
Disposition12 preserved, 2 dumped in Turkey but still extant, 1 parts donor, 23 lost at sea, remainder scrapped
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