The AM4/Class 304 EMUs used to make a kind of roaring sound when starting up. Does anyone know what was happening here?
I believe that they were nicknamed dinosaurs by enthusiasts in their twilight years because of their advancing age (and because of that roaring sound?).
There is a YouTube clip of them on their last day in service, on the Cross City line in 1996. The roaring sound starts at 3 minutes 45 seconds into the clip. See
There is also a now closed thread on the 304s at https://www.railforums.co.uk/threads/class-304s.93311
I believe that they were nicknamed dinosaurs by enthusiasts in their twilight years because of their advancing age (and because of that roaring sound?).
There is a YouTube clip of them on their last day in service, on the Cross City line in 1996. The roaring sound starts at 3 minutes 45 seconds into the clip. See
There is also a now closed thread on the 304s at https://www.railforums.co.uk/threads/class-304s.93311