Originally Posted by
Bah Humbug
...also include bikes that don't pass UCI rules (airfoil shape, saddle nose, etc)...
Do the UCI rules still prohibit anything on the bike with a sole purpose of reducing drag? Before carbon fiber rims became affordable and refined to the high extent we see today, lots of folks rode those aluminum rims with thin carbon fairings. But I understand they were illegal in sanctioned competition. You could have an all-carbon rim with good aero characteristics, but putting on that fairing was not allowed, because it wasn't structurally necessary, therefore its only purpose was to improve the aero.