Originally Posted by
Motoyuki
i looked for it on the seat post below the minimum insertion but it's scratched there. I think I'll just buy a 27mm post. Hopefully the 0.2mm (instead of buying 27.2mm) won't be a big deal.
Correct fit is important for the integrity of the seat tube and the bolt area. You received good advice earlier (to bring the frame and post to your local bike shop for a measurement). I would not advise buying any post before you're certain of the correct size.
My '89 Club requires a 26.6mm seatpost, for what it's worth.
Phil G.