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Rhymney Railway S and S1 classes
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)
Specifications Configuration: ​  • Whyte 0-6-0T Gauge 4 ft 8+1⁄2 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/in (1.21 MPa); Rebuilt: 200 lbf/in (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)
Career Operators RR, GWR, BR Class RR: S & S1 Power class BR: 4F Numbers RR: 32-4, 111–4 GWR/BR: 78-83 Withdrawn 1954–5 Disposition All scrapped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 locomotives 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.

References

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

External links

• Rail UK database entry for Rhymney Railway S class
• Rail UK database entry for Rhymney Railway S1 class

• Rhymney Railway locomotives
• 0-6-0T locomotives
• Railway locomotives introduced in 1908
• Scrapped locomotives
• Standard gauge steam locomotives of Great Britain
• Freight locomotives