>>1586028>regardless of the bike size, the seat tube angle is fixed...but different from bike to bike. Either your proportions are that of T rex, you have a "one man one jar" pelvis, or there's something incredibly wrong with your fit, that you're trying to fix with seatpost, rather than stem, frame, ect.
Aside from anon's correct advice, I also have purient interest, as it's a very unusual setup. The TL/DR is more aggressive racing geometry. Performance road.
, crit, maybe even TT.
Pic somewhat related. It's a specialized shiv, in Fuck the UCI mode.