Nice D.R. He was a great bloke who liked a good 'ol chat.Late 70's track & TT frames i had from Dave had started using the Russell/Slough swan logo on the headtube.When i worked at Ken Ryall's shop he used to be scathing about him (Dave) and his frame designs(no seatstay/chainstay bridge,76 parallel pursuit frame circa 1976).At this time Ken was using Stan Pike to build his frames which were a little more conventional.Going by the logo's i'd guess at mid 70's.
Nice D.R. He was a great bloke who liked a good 'ol chat.Late 70's track & TT frames i had from Dave had started using the Russell/Slough swan logo on the headtube.When i worked at Ken Ryall's shop he used to be scathing about him (Dave) and his frame designs(no seatstay/chainstay bridge,76 parallel pursuit frame circa 1976).At this time Ken was using Stan Pike to build his frames which were a little more conventional.Going by the logo's i'd guess at mid 70's.