LMS Ivatt Class 2 2-6-0

LMS Ivatt Class 2 2-6-0
46403 on the Midland Main Line near Souldrop in 1955.
Type and origin
Power typeSteam
DesignerH. G. Ivatt
Builder
Build date1946–1953
Total produced128
Specifications
Configuration:
 • Whyte2-6-0
 • UIC1′C h2
Gauge4 ft 8+12 in (1,435 mm) standard gauge
Leading dia.3 ft 0 in (0.914 m)
Driver dia.5 ft 0 in (1.524 m)
Length53 ft 1+34 in (16.20 m)
Loco weight47.10 long tons (47.9 t; 52.8 short tons) (6400–64)
48.45 long tons (49.2 t) (remainder)
Tender weight37.15 long tons (37.7 t; 41.6 short tons)
Fuel typeCoal
Fuel capacity4 long tons (4.1 t; 4.5 short tons)
Water cap.3,000 imp gal (14,000 L; 3,600 US gal)
Firebox:
 • Grate area17+12 sq ft (1.63 m2)
BoilerLMS type 7
Boiler pressure200 lbf/in2 (1.38 MPa)
Heating surface:
 • Firebox101 sq ft (9.4 m2)
 • Tubes924 sq ft (85.8 m2)
Superheater:
 • Heating area134 sq ft (12.4 m2) or
124 sq ft (11.5 m2)
CylindersTwo, outside
Cylinder size16 in × 24 in (406 mm × 610 mm)
Valve gearWalschaerts
Performance figures
Tractive effort17,410–18,510 lbf (77.44–82.34 kN)
Career
Operators
Power class
  • LMS: 2F
  • BR: 2MT
Numbers
  • LMS:6400–6419
  • BR: 46400–46527
NicknamesMickey Mouse
Axle load classBR: Route Availability 2
Withdrawn1961–1967
Disposition7 preserved, remainder scrapped

The London, Midland and Scottish Railway (LMS) Ivatt Class 2 2-6-0 is a class of steam locomotive designed for light mixed traffic.