Anthony Coulls explains the workings of the innovative Deltic power unit, using a cross-section that was used by Napier to showcase the technology in the 1950s.

Watch our tour of the rest of the Deltic:    • Deltic: Step inside the diesel BEAST ...  

To find out more about the National Railway Museum, visit our website: https://www.railwaymuseum.org.uk/

Chapters:
0:00-0:10 Intro
0:10-0:39 The Deltic's Secret
0:39-1:48 Why is it triangular?
1:48-3:15 Application to the rail network

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