Two weeks ago, I became the proud owner of a 1987 Schwinn Super Sport frame and fork. No other components with it. I have a complete set of '08 Shimano 105 components I'd like to use until the day comes that I do a full restoration of the bike.

Anyway, the frame is at the painters, I'm ordering parts and I'm trying to find a couple of dimensions. On trfrindly.com it lists the seatpot diameter as 26.6. Can anyone here verify that? Second, does anyone happen to know the outside diameter of the seat tube?

TIA for any help!

Steve