Answer: They were all designed to produce minimal amounts of drag. In part, this was done by relocating the brake under the bottom bracket where it is out of cleaner air and down low. While I havent seen any data that this is actually faster, its hard to argue with some of the fastest TT bikes ever built.
Trek Speed Concept
Cervelo P4
Felt DA
Zipp 2001
Specialized Transition
Specialized Shiv
Ridley
Hooker
