Readers of this forum may have noticed that I have a bias in favour of old stuff, but even so I made a point of dumping all my 27 inch wheels some years ago. And I've never regretted that decision.
It is possible (but not desirable) to use 700 wheels in a frame intended for 27's by using long reach brake callipers, or in an extreme case, by brazing cantilever bosses onto the frame.
Readers of this forum may have noticed that I have a bias in favour of old stuff, but even so I made a point of dumping all my 27 inch wheels some years ago. And I've never regretted that decision.
It is possible (but not desirable) to use 700 wheels in a frame intended for 27's by using long reach brake callipers, or in an extreme case, by brazing cantilever bosses onto the frame.