SECR F1 class

SECR F1 class
Type and origin
Power typeSteam
DesignerHarry Wainwright
BuilderAshford Works
Rebuild date1903–1919
Number rebuilt76
Specifications
Configuration:
​
 • Whyte4-4-0
 • UIC2′B
Gauge4 ft 8+1⁄2 in (1,435 mm)
Driver dia.7 ft 0 in (2.134 m)
Loco weight45.1 long tons (45.8 t)
Fuel typeCoal
Boiler pressure170 psi (1.17 MPa)
CylindersTwo, inside
Cylinder size18 in × 26 in (457 mm × 660 mm)
Valve gearStephenson
Performance figures
Tractive effort14,491 lbf (64.5 kN)
Career
Operators
ClassSECR/SR: F1
Number in class1 January 1923: 75
NicknamesJumbo
Withdrawn1920–1949
DispositionAll scrapped

The SECR F1 class was a series of 4-4-0 steam locomotives operated by the South Eastern and Chatham Railway. These locomotives were rebuilt from older Stirling F class locomotives by Harry Wainwright between 1903 and 1919.

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