LMS 6399 Fury

The London, Midland and Scottish Railway (LMS) No. 6399 Fury was an unsuccessful British experimental express passenger locomotive. The intention was to save fuel by using high-pressure steam, which is thermodynamically more efficient than low-pressure steam.

LMS 6399 Fury
Type and origin
Power typeSteam
BuilderNorth British Locomotive Co.
Serial number23890
Build date1929
Specifications
Configuration:
  Whyte4-6-0
  UIC2′C h3
Gauge4 ft 8+12 in (1,435 mm) standard gauge
Leading dia.3 ft 3+12 in (1.003 m)
Driver dia.6 ft 9 in (2.057 m)
Length64 ft 2+34 in (19.58 m)
Loco weight87.10 long tons (88.50 t; 97.55 short tons)
Fuel typeCoal
Fuel capacity5.5 long tons (5.6 t; 6.2 short tons)
Water cap.3,500 imp gal (16,000 L)
Firebox:
  Grate area28 sq ft (2.6 m2)
Boiler pressure1,400–1,800 psi (9.65–12.41 MPa) (HP boiler),
900 psi (6.21 MPa) (HP drum),
250 psi (1.72 MPa) (LP boiler)
Heating surface:
  Firebox218 sq ft (20.3 m2)
  Tubes1,335 sq ft (124.0 m2)
Superheater:
  Heating area
  • 274 sq ft (25.5 m2) (high pressure)
  • 355 sq ft (33.0 m2) (low pressure)
CylindersThree: 1 HP inside, 2 LP outside
High-pressure cylinder11+12 in × 26 in (292 mm × 660 mm)
Low-pressure cylinder18 in × 26 in (457 mm × 660 mm)
Career
OperatorsLondon, Midland and Scottish Railway
Numbers6399
Official nameFury
DispositionRebuilt in 1935 as Rebuilt Royal Scot class no. 6170 British Legion
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