So the question is: Assuming I can get a '70s touring bike in steel with '70s parts is there any reason NOT to use that puppy as a tourer? The only potential issues I see are the 27" wheels/tires/tubes (which may not be readily available if I need replacements) and the 5-speed freewheel (ditto). Assuming the bike is in new condition, and that the rubber is sound, is there any reason I've overlooked NOT to use that bike as a tourer?
If the wheels/tires are an issue, I understand that it is feasible to replace the wheels with 700c models providing I either use a drop bolt for the existing brakes or replace the existing brakes with long-reach models.
What other considerations have I not taken into account? Thanks!