Are those tubs with Woods valves? If so then presumably also including a front rod brake.
I've only just noticed an unanswered question here.
No the tyres are not tubs, although they did exist at that time. It's just as well they are wired on, because I guess there cannot be any seviceable 26" tubs in existence, since they eventually perish with age, so even if you tracked down a stash of your great grandfather's tubs, they would probably be useless.
The wheels in the bike are 26 x 1.25" westwoods,which themselves can only be slightly more common than hen's teeth. This size (with high pressure 'endrick' style rims) was still in use in the 1970's before the advent of 700's, and were sometimes used by club riders when converting an old racing frame (built for sprints) for use as a winter hack. As a result there are still a few useable tyres around - even inner tubes with presta valves, which I have fitted since the photo above was taken.
I've only just noticed an unanswered question here.
No the tyres are not tubs, although they did exist at that time. It's just as well they are wired on, because I guess there cannot be any seviceable 26" tubs in existence, since they eventually perish with age, so even if you tracked down a stash of your great grandfather's tubs, they would probably be useless.
The wheels in the bike are 26 x 1.25" westwoods,which themselves can only be slightly more common than hen's teeth. This size (with high pressure 'endrick' style rims) was still in use in the 1970's before the advent of 700's, and were sometimes used by club riders when converting an old racing frame (built for sprints) for use as a winter hack. As a result there are still a few useable tyres around - even inner tubes with presta valves, which I have fitted since the photo above was taken.