I was given an old frame which I'm thinking of building up into a commuter/touring bike. It's an older Bianchi, Asian made frame I suspect, manganese steel frame, 26.4 seat post - ie. nothing too special but it has braze ons for cables and DT shifters, and front and rear racks, and a RD hanger, so definately not a bottom end frame. BUT, it's a tall bike with a 62cm seat tube but a pretty short 56 cm top tube. That TT length is exactly what I normally ride, and with a 100mm stem I get my perfect bar-to-seatpost distance and a very comfy bar height 1" below the seat height.
I think it was originally a 27" wheeled bike, but with 700c wheels and 25mm tires standover is a tad under 34", so I can just clear it with regular shoes on but with my heals lifted a bit.
So the question is - does it matter that I don't have 1" of crotch clearance? Is there a safety reason I'm not thinking of for having more room there? Injury in a crash?
BTW: I've always figured the racer's 'rule' of getting the smallest frame possible (which puts me huntched over on top of a 56) is more for getting a short wheelbase, lighter frame and plenty of top tube clearance for thrashing about in sprints.