Originally Posted by
beaverstuff
I forgot to mention that my Holdsworth has 700mm clincher wheels:
Hubs are made by Campagnolo; rims are made by Sun Rims (M14A); the rear freewheel is a SunTour Perfect, with a 14, 17, 20, 24, 28 set of cogs.
It may have 700c wheels but it also looks like the pads have been pushed all the way to the bottom of their adjustment range. If they were in the middle of the adjustment range they'd be just about dead on for 27" wheels. It wouldn't surprise me if it orignally had 27" and a previous owner did a 700c conversion.