SECR Q1 class

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SECR Q1 class
Type and origin
Power type Steam
Designer Harry Wainwright
Rebuild date 1903–1919
Number rebuilt 55
 • Whyte 0-4-4T
 • UIC B2′ n2t
Gauge 4 ft 8 12 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,
Cylinder size 18 in × 26 in (457 mm × 660 mm)
Valve gear Stephenson valve gear
Performance figures
Tractive effort 16,274 lbf (72.39 kN)
Class Q1
Number in class 1 January 1923: 46
Withdrawn 1909–1930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 1919.[1] These locomotives should not be confused with the later SR Q1 class 0-6-0.


Fifty-five locomotives were rebuilt and 46 survived into Southern Railway ownership on 1 January 1923 with random numbers between 12 and 423. All had been withdrawn by 1930.


  1. ^ Casserley, H.C. and Johnston, S.W., Locomotives at the Grouping 1, Southern Railway, page 42, Ian Allan, 1974, ISBN 0-7110-0552-4