Regarding the 1925 16H from Kingston upon Hull, is that an oil pump driven from the exhaust cam - and is this (see photo) another of the same? This Norton is in a private collection in New Zealand, unrestored, very original and a year older. Perhaps someone recognises the oil pump type - which I don't!
Note added: refer to this blog entry for info on the oil pump used.
Note added: refer to this blog entry for info on the oil pump used.
