2.1K views · 878 reactions | Deltic- the locomotive other locomotives call ‘Sir’. #class55 #55013 The Black Watch. Now sadly returned to its home depot for repairs, but seen in this video at the recent diesel gala at the Great Central Railway. #uktrainspotting #trains #diesellocomotive #britishrailways #railway #railways #trainspotting #heritagerailway The Deltic Preservation Society | Adrian Watson | Facebook

If you want to see three class 55 Deltic locomotives in the same place, then now is your chance at the The Deltic Preservation Society workshop at Barrow Hill Roundhouse Railway Centre. All inside now for the winter. BarrowHill is open at weekends (only) until 14th December 2025. The Deltic Preservation workshop is usually open at weekends, but it is worth checking their Facebook site before travelling, as they sometimes close if the volunteers are not available on a particular weekend. #trains

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

The Load Regulator is to a Deltic power unit, what an TCU (Transmission Control Unit), is to a modern car. It controls the amount of electrical power produced by the main generator, in response to engine load. At the centre of the LR is a Vane Motor. This is a doughnut - shaped chamber with a stop at the top. Inside the chamber is a very close fitting paddle or 'vane'. Two small apertures at the top, one on either side, permit a regulated amount of oil, fed by the engine governor, to move the va