I advise you to press a brand new car pedal. No matter with pumped braked after the engine being shut, or on a running engine. If talking about the vacuum booster brakes. How much travel it has. (None)
And on a not brand new car, that can be later on all the same that was a brand new before that. Shut the engine, pump brake tree four times, and let it go down the hill. And see how much travel the brake will have. (it will have all the same travel like with booster but should be pressed much much harder, for a non new car state.)
Travel will be all the same depending not on the push back from the disk, but according to the state of the brake system. My good advise.
And then explain please, if there exist such a thing, how it can be so, if the f1 pedal travel replicated with less travel, but a GT one, with more? If f1 disk is way more harder to stop. )))) Does a pedal should be falled in or kicked back if the disk is locked, according to all of this pseudo brake pedal travel from a disk thingies)))
There is no such a thing like pedal travel from a disk rotation)