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The first 19 locomotives ordered by Isambard Kingdom Brunel for the Great Western Railway included two unusual Haigh Foundry locomotives. ''Snake'' and ''Viper'' were built at the Haigh Foundry in 1838 with cylinders and the driving wheels geared 2:3 in order to keep the cylinder stroke speed low while allowing high track speed, in line with Brunel's specifications. Within a couple of years they had been rebuilt with and conventional drive. They were later converted to 2-2-2T tank locomotives, possibly when they were sent to work the South Devon Railway, and at some time fitted with driving wheels and cylinders. ==Names== * ''Snake'' (Haigh Foundry 25; 1838–1869) :Between 1846 and 1851 it carried a different name, ''Exe'', while working on the South Devon Railway, after the River Exe; it reverted to ''Snake'' when it returned to the Great Western Railway. * ''Viper'' (Haigh Foundry 26; 1838–1868) :Between 1846 and 1851 it carried a different name, ''Teign'', while working on the South Devon Railway, after the River Teign; it reverted to ''Viper'' when it returned to the Great Western Railway. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「GWR Haigh Foundry locomotives」の詳細全文を読む スポンサード リンク
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