Originally Posted by
Iowegian
I'm amazed you have 27 x 1 1/4 wheels on that side of the pond. I would search for some used 700c wheels to replace the ones you have.
Not too surprising considering 27 X 1 1/4 was originated in England by Dunlop. Ulster and England were joined at the hip (for maybe too long but that's OT). 630mm beads certainly caught on for a number of decades.