Napier Deltic

Removed the animated gif 'cause it made the page hang.

Just found this at driverchris and more at Wikepedia.  My father-in-law worked on the Deltic diesel engine whilst an apprentice at Napier.  He remembers them having some spectacular failures during bench testing and suggested that it proved too expensive to productionise, however Wikepedia indicates that it had a long production life.