i don't know if braking performance is the main reason for disk brakes.
I suspect the biggest benefit is bike makers get to sell new bikes to people who don't need new bikes.
For professional riders who don't buy their own bikes, it's probably more about areo, and maybe weight, as the rims don't need a braking surface. They have more creativity with the shape and material. They only brake for emergencies and going into a corner on a downhill. A tiny fraction of a stage. The areo benefit is for the full length of the stage.
I don't know much about physics but even if the weight of the disks is more than rims brakes, the weight being closer to the centre of the wheel might be a benefit. I suspect in terms of performance, aero is the biggest benefit, though.
even the 12 speed cassettes, from what I've read, accelerating smoothly isn't the main point. for a professional rider, they spend a lot more time at the same speed than they do accelerating. so being able to dial in the perfect gear for the speed, wind and gradient is more important than being able to accelerate smoothly.
I suspect the biggest benefit is bike makers get to sell new bikes to people who don't need new bikes.
For professional riders who don't buy their own bikes, it's probably more about areo, and maybe weight, as the rims don't need a braking surface. They have more creativity with the shape and material. They only brake for emergencies and going into a corner on a downhill. A tiny fraction of a stage. The areo benefit is for the full length of the stage.
I don't know much about physics but even if the weight of the disks is more than rims brakes, the weight being closer to the centre of the wheel might be a benefit. I suspect in terms of performance, aero is the biggest benefit, though.
even the 12 speed cassettes, from what I've read, accelerating smoothly isn't the main point. for a professional rider, they spend a lot more time at the same speed than they do accelerating. so being able to dial in the perfect gear for the speed, wind and gradient is more important than being able to accelerate smoothly.