SECR Q1 class

SECR Q1 class
SECR Q1 class
Power type
Type and origin
Power type	Steam
Designer	Harry Wainwright
Rebuild date	1903–1917
Number rebuilt	55
Configuration:;
Specifications
Configuration:;
• Whyte	0-4-4T
• UIC	B2′ n2t
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	5 ft 6 in (1.676 m)
Loco weight	49.6 long tons (50.4 t)
Fuel type	Coal
Boiler pressure	150 lbf/in2 (1.03 MPa)
Cylinders	Two, inside
Cylinder size	18 in × 26 in (457 mm × 660 mm)
Valve gear	Stephenson valve gear
Tractive effort
Performance figures
Tractive effort	16,274 lbf (72.39 kN)
Operators
Career
Operators	South Eastern and Chatham Railway; → Southern Railway;
Class	Q1
Number in class	1 January 1923: 47
Withdrawn	1909–1930
Disposition	All scrapped

The SECR Q1 class was a class of 0-4-4T steam locomotives of the South Eastern and Chatham Railway. The class was rebuilt from older Stirling Q class locomotives by Harry Wainwright between 1903 and 1917 by fitting the boiler that had been designed for the H class 0-4-4T in 1902–03.^[1]^[2]

^ Casserley, H.C. and Johnston, S.W., Locomotives at the Grouping 1, Southern Railway, page 42, Ian Allan, 1974, ISBN 0-7110-0552-4
^ Bradley, D.L. (September 1985) [1963]. The Locomotive History of the South Eastern Railway (2nd ed.). London: RCTS. p. 165. ISBN 0-901115-48-7. OCLC 642415860.