Originally Posted by
John E
Chas, if I recall correctly, early 1970s PX-10s came in two different geometries, the tighter one you describe and a somewhat more relaxed one with a bit more clearance. I still think 700C would be the way to go. My 1971
That's information circulated by @
dddd which probably has some merit. My sample is only N=2 so I'm no expert on PX-10s....
I've seen wheel clearance variations on late 60's to early 70's Gitane Tour de France and Super Corsa models too.
I suspect that the variances in those models from both makers were by not by design but rather by happenstance (after a 2 liitre wine lunch)!
During the bike boom, manufacturers, especially in France were pushing bikes out the door as fast as they could box them up and push them out the door! There was no such thing as QC.
verktyg
Chas.