Describing how the fascinating Deltic engine works. At the Deltic Preservation Society at Barrow Hill in Derbyshire. | Adrian Watson

With their roaring twin Napier Deltic engines and sleek design, the Class 55 Deltics became legends of the East Coast Main Line. 🚂✨ Introduced in the early 1960s, these powerful diesels hauled expresses between London, York, Newcastle, and Edinburgh at record speeds, replacing steam and defining a new era of British rail travel. Nicknamed the “racehorses of the rails,” they remain icons of diesel power and endurance. 📽️ In my latest video, I uncover the story of the Class 55 Deltic — their des