Brake Ducts, Tire Cooling, and beyond

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AR3-GP
AR3-GP
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Joined: 06 Jul 2021, 01:22

Re: Brake Ducts, Tire Cooling, and beyond

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2013 Italian GP. Look at all the heat sources at the back of the car. Warmer air is going to hit the tires affecting the cooling rate, if it is not managed...

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It doesn't turn.

AR3-GP
AR3-GP
381
Joined: 06 Jul 2021, 01:22

Re: Brake Ducts, Tire Cooling, and beyond

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It doesn't turn.

AR3-GP
AR3-GP
381
Joined: 06 Jul 2021, 01:22

Re: Brake Ducts, Tire Cooling, and beyond

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So much heat. You can even see the heated air/tire smoke. It's probably important to keep the hot air wake away from the brake duct inlets and the rear tires.

Image
It doesn't turn.

AR3-GP
AR3-GP
381
Joined: 06 Jul 2021, 01:22

Re: Brake Ducts, Tire Cooling, and beyond

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It doesn't turn.

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falonso81
2
Joined: 04 Sep 2013, 15:29

Re: Brake Ducts, Tire Cooling, and beyond

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"It doesn't turn" might be the most polite way to say "we cooked the tires, baked the brakes, and hoped for the best".

vorticism
vorticism
334
Joined: 01 Mar 2022, 20:20

Re: Brake Ducts, Tire Cooling, and beyond

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AR3-GP wrote:
03 Jun 2025, 01:27
I agree with you on this theory. They can mix hot brake exhaust with fresh air to create a warm air layer under the outermost cake tin layer in order to warm the wheel rim/tyre. I was able to find the fully blanked brake exhaust outlet in one of the photos from Spain, so they also have the option to go to a "maximum rim cooling" configuration by blocking the hot brake exhaust from entering that outermost shell.

https://i.postimg.cc/3xzbW5cJ/image.png

https://i.postimg.cc/BZw5J5yJ/image.png
Interesting. Sometimes the front wheel is too cold. I take it the dilution/warming version was at Japan?

AR3-GP wrote:
03 Jun 2025, 06:39
If you compare Mclaren's rear brake drums from 2024 to 2025...
https://i.postimg.cc/tCqrQp0R/image.png
Good comparison photos there. The disc collector looks about the same size both years. In 2025 they add the windows to it which exposes the insulation. Qs: was there the same insulation the previous year just without the windows. Are the windows just there to allow the insulation to breath. Are they for slight weight savings. Etc.

AR3-GP wrote:
03 Jun 2025, 06:39
I also think your theory could fit what they are doing with the rear collector (RBR). The rear brake disc collector on the Red Bull has a large mushroom shape. What would the excess volume be fore? Perhaps the extra volume is used for mixing...

https://i.postimg.cc/NG7NzLzP/image.png
Regarding dilution. That could be, I can't say from the photos. The collector looks insulated so that would explain some of its voluminousness. Otherwise, a larger air gap is a simple way to provide thermal protection. Or R&D led them to conclude the aero of a larger collector/scroll/exducer was better.