Great Western steam locomotives - 'Castle' class index

Jul 17, 2013 · The 'Castle's' tractive effort was 31,625 pounds at 85 per cent boiler pressure compared to the 'Star's' 27,800 pounds, and the 29,835 pounds, also at 85 per cent boiler pressure, of the first Gresley Pacifics of the LNER. The grate area was increased to 29.4 square feet in the 'Castle' from the 27.07 square feet in the 'Star'.

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