Originally Posted by baxtefer

using brakes is faster.

given the same rider, on the same course (which requires periodic slowing and acceleration), on 2 different bikes (same gearing) 1 of which is brakeless, the other with a front brake.....
The rider will complete the course faster on the braked bicke since he is able to slow down quicker (i.e. spend more time at a higher velocity).
Top speed is the same, acceleration is the same, the time spent slowing down is greater on the brakeless bike