Comments by "TheEyeTeaMan" (@TheEyeTeaMan) on "Engineering Explained" channel.

  1. the parking brake acts on the hub and works like a drum brake that is why the rear disk brakes on cars are not just a flat disk but have the center part. this is why the pad remains cold and the brake fluid remains cold. It is also why the center hub area gets very hot vs the rotor and everything else. Wheels tend to act more like a fan than a heat sink.
    1