High Quality Content by WIKIPEDIA articles! There was only one member of Class S2, No.110. It was an extensive rebuild by the NCC of a BNCR Class S 2-4-2T Worsdell-von Borries two-cylinder compound locomotive that had been built in 1892. It had outside cylinders and Walschaerts valve gear with the smaller diameter high-pressure cylinder on the left and the larger low-pressure one on the right. During rebuilding in 1931, a modified standard gauge G6S boiler was installed; this was 7ft longer and 6 3/4 in greater in diameter than the original and had a working pressure of 200psi. To accommodate this, the overall length of the locomotive was increased by slightly less than four feet. The trailing radial truck was replaced by four-wheel bogie and a rear bunker was fitted which held one and a half tons of coal. The weight was increased by 10 1/4 tons.

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