This video demonstrates the engine sounds from 4 different classes of British Rail diesel locomotive. They may look visually (slightly) similar but they each have a characteristically different engine sound. The class 37 and class 40 have different types of engines, but both were built by the English Electric Company. The class 44 has a Sulzer engine, and the class 55 has a Napier Deltic engine. So there you go! | Adrian Watson

Lord of the Rails. The British Rail #class55 Deltic locomotive. The Deltic Preservation Society #uktrainspotting #trains #diesellocomotive #britishrailways #railway #railways #trainspotting #deltic #Napier #engineering | Adrian Watson

A Quick Look inside the cab of a class 55 Deltic locomotive. This locomotive is owned by the The Deltic Preservation Society and is currently at the Great Central Railway. | Adrian Watson

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

Waking the beast. Deltic locomotive (55019) starting up at Loughborough Central station. Getting ready for the Spring Diesel Gala event. The Deltic Preservation Society | Adrian Watson