Resurrecting a zombie with new and, because we're talking old Schwinns here, conflicting information for future seat post researchers.
I just replaced the post on my '72 Super Sport. The 26.8 I bought based on this thread was too big. I exchanged it for a 26.4, and that worked out.
So either my old SS has .4mm of ancient grime inside the seat tube which throws these numbers off, or something changed for 1972.
Ahhhh, Schwinn. Nothing's ever easy, is it?
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A race bike in any era is a highly personal choice that at its "best" balances the requirements of fit, weight, handling, durability and cost tempered by the willingness to toss it and oneself down the pavement at considerable speed. ~Bandera