Class 55

 

Introduced between 1961 and 1962, the 22 Class 55 'Deltics' were intended as a direct replacement of the Gresley A4 Pacific steam locomotives on the East Coast Main Line. At the time, they were the most powerful diesel locomotives on British Railways at 3,300hp, and derived their name from the unique English Electric Napier Deltic engine. Originally developed for high speed naval craft, two of these 18 cylinder, opposed piston engines graced each locomotive. The last of these machines was withdrawn in January 1982, with six examples surviving for preservation.

Engines: 2 Napier D18.25s giving 3,300hp.

Numbers: 55 001 - 55 022.

Previous number series: D9000 - D9021.
(before the class were built the numbers allocated were D1000 onwards, then changed to D1500 onwards; D9000 onwards was finally settled upon.)  

The Class 55 Fleet - Click Here                                       

Related websites:
Definitive Deltics
Chronicles Of Napier
The Deltic Preservation
Society




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The end...
In January 1982 the Deltics ended their careers with British Rail and the remaining members were unceremoniously dumped at Doncaster works awaiting their final call to the scrapman. Happily six examples survived for preservation.



On the 27th February, 1982, Doncaster Works held the 'Deltic Farewell' open day, displaying all the remaining members of the class before cutting up commenced. The popularity of these locomotives can be seen below, with crowds well in attendance. Then, only 55 002 The Kings Own Yorkshire Light Infantry had been secured for preservation.