No suspicion or evidence about a number 5 fitted to a Duck. Thank you for the explanation why not. So we know number 5s were not fitted (?) to the team cars in 1930 or 1931 or the Ducks. So why was there a crankcase manufactured to take a number 5 in the first place? What car was it to be fitted to? Beyond the 1931 Ards TT certainly not an Ulster.
Simon Thomas
Near Ballystockart

Location: Comber County Down