I've got a fully built 93 (I think) frame which takes a 27.0 post iirc. I have another frame which is a later vintage, though not sure what year exactly, but it has curved seat stays which my built bike doesn't. I'd assumed the seat post size was the same, but it's way bigger than 27.0. I've tried various posts that I have laying around, none fit. All I can conclude is that it's much bigger than 27.2 and smaller than 30.9.
Anyone know what size post it should take?
Anyone know what size post it should take?