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The British Rail (BR) Class 13 were created in 1965 because of the need to provide more powerful shunters for the Tinsley Marshalling Yard. This was achieved by permanently coupling together two Class 08 shunters as a 'master and slave' (alternatively 'cow and calf') units, the latter with its cab removed. Both units were ballasted to improve traction. Initially the units were coupled cab-to-cab but it was found more practical to couple master nose to slave cab. A larger, rigid locomotive could not be used because of the risk of grounding on the marshalling yard hump. ==Units== Three pairs were formed as follows: *Master unit D4190 and Slave unit D4189 to form D4501, later 13001 *Master unit D4187 and Slave unit D3697 to form D4502, later 13002 *Master unit D4188 and Slave unit D3698 to form D4500, later 13003 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「British Rail Class 13」の詳細全文を読む スポンサード リンク
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