Originally Posted by
RiddleOfSteel
Most any mid- to late-'80s Schwinn will have the standard BB drop amount of 70mm. Older Paramounts were 76mm (3"), Cannondales at 66/67mm, my Allez SE somewhere in that range, too. As long as you aren't pedaling through sharp corners or have the inside pedal at bottom dead center through a good curve (easy to do), you'll never strike a pedal the rest of your life, and BB drop won't matter.
Looks like my Schwinn has a BB drop of 64mm. Stand over height with 700x32s is 35.25” and my PBH is 36.5”. Just enough clearance to not be a concern.
My 70s frame is also a 25” but has 85mm BB drop. Standover height is just under 34” with 28s.
Actually, I’m pretty happy with the Schwinn these days. Funny I couldn’t get rid of it for $5 last year at a swap meet. Now it’s getting ridden almost daily.
Otto