Vincent Black Shadow and C bikes having 1⅛" Amal 289 carburettors and Series D bikes having 1⅛" Amal Type 389/10 units. While other contemporary motorcycles tended to be polished and chromed, founder Philip Conrad Vincent (PCV) decreed that the Black Shadow engine itself be black. The engine's signature colour was achieved by applying a "pyluminising" coating of chromate anti-corrosion primer over which a layer of Pinchin & Johnson black enamel was added. The part was then baked in an oven for 2 hours at . Although some have claimed that the black finish increased the rate of heat rejection from the engine, its
Edward the Black Prince "Edward the Prince, cognomen: The Black"); in the other, in English to "the Blake Prince". In both instances, Leland is summarising earlier works – respectively, the 14th-century "Eulogium Historiarum" and the late 15th-century chronicle attributed to John Warkworth – but in neither case does the name appear in his source texts. In print, Roger Ascham in his "Toxophilus" (1545) refers to "ye noble black prince Edward beside Poeters"; while Richard Grafton, in his "Chronicle at Large" (1569), uses the name on three occasions, saying that "some writers name him the black prince", and elsewhere that he was "commonly called the