Originally Posted by
pdxtex
^^^so then does the notion of the multiply inseam x .883 method seem outdated or need some updating? it was designed to take average shoe height and pedal height into account but i bet pedals and shoe soles have become much thinner over the years. speedplay pedals with a thin soled shoe are probably way thinner then sidis and first gen. looks from the 1980s.....
When I mention "shoe flex" I'm thinking of a sneaker type shoe. I don't play soccer so I have no idea if a soccer shoe is like a clipless pedal cycling shoe or not. It probably isn't if its sole is a full inch thick.
The Lemond rule seems to be a good starting point. My understanding is that it has some assumed shoe and pedal dimensions, so you'd subtract them out and insert your actual shoe/pedal dimensions.
My saddle position, relative to the BB, has gone down a lot between the mid 90s and now. The primary reason was changing pedals and shoes and then later changing crank length. The saddle->"bottom of my foot while it's in my cycling shoe while clipped into the pedal" distance has stayed within a narrow range though.