Some observations- First off, I've seen old pictures where people are riding frames that are huge by modern standards, where they almost certainly couldn't stand over the bike- just have to dismount when stopping. And on some of those bikes, they used the seatpost/seat arrangement that shifts the seat forward, with seatpost at rear of the seat. So apparently, in the old days, at least some people had a lot different idea about proper bike fit than we do now. Secondly, I've got an Arpan bike which is presumably modeled on the Raleighs. It seems to have a higher bottom bracket but longer crank arms than my Ashtabula-crank bikes. Not sure if this is typical, or how this compares to modern road bikes, but that would affect the proper seat height vs standover and all.