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BR Classes 44, 45, 46
BR Classes 44, 45, 46
The BR Derby built 1Co-Co1 type 4 'Peaks'. The first BR type 4 emerged from Derby Locomotive Works numbered D1 in 1959. This locomotive had Crompton Parkinson electrical equipment and a Sulzer 12LDA28 diesel engine. A further nine locomotives were built to this design (D2 - D10), all were designated class 44. They were all named after British Mountains, hence the term 'Peaks' which was applied not just to the first ten but the whole of the subsequent classes 45 and 46.
The 126 class 45s started at D11. These were uprated and modified versions of class 44, with the Sulzer 12LDA28B diesel engine and uprated Crompton Parkinson electrical equipment. The next series was the Class 46, numbered D138 - D193, outwardly similar to Class 45 they had Brush electrical equipment. From 1976, TOPS saw the class 44s to 44001 - 44010 and the 46s 46001 - 46056. The class 45s were renumbered at random between 45001 - 45077 and 45101 - 45150.
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Yet another view at Aller Junction - a busy location on summer Saturdays.