Rhymney Railway S class

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Rhymney Railway
S and S1 classes
Cardiff Bute East Dock, with ex-Rhymney 0-6-2T geograph-2564218-by-Ben-Brooksbank.jpg
Class S1 0-6-0T No. at Cardiff 1950
Type and origin
Power type Steam
Designer C. T. Hurry Riches
Build date 1908–1920
Total produced 7 4(S), 3(S1)
 • Whyte 0-6-0T
Gauge 4 ft 8 12 in (1,435 mm) standard gauge
Driver dia. 4 ft 6 in (1.372 m)
Loco weight S 55.06–66.95 long tons (55.94–68.02 t); S1 56.08–66.95 long tons (56.98–68.02 t)
Fuel type Coal
Boiler pressure 175 lbf/in2 (1.21 MPa);
Rebuilt: 200 lbf/in2 (1.38 MPa)
Cylinders Two, inside
Cylinder size 18 in × 26 in (457 mm × 660 mm)
Performance figures
Tractive effort S 23,870 lbf (106.2 kN);
S1: 25,210 lbf (112.1 kN)
Operators RR, GWR, BR
Class RR: S & S1
Power class BR: 4F
Numbers RR: 32-4, 111–4
GWR/BR: 78-83
Withdrawn 1954–5
Disposition all scrapped

The Rhymney Railway S class was a class of 0-6-0T steam locomotive introduced into traffic in 1908 designed by the railway's engineer Hurry Riches. There were initially four locos in the class. A further 4 ‘S1’ locomotives with a larger boiler and higher tractive effort were built in 1920.


  • Casserley, H. C. & Johnston, Stuart W. (1966). Locomotives at the Grouping 4: Great Western Railway. Shepperton, Middlesex: Ian Allan Limited. p. 9-6. 

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