Carbon brake cooling mod

2.5 I5 20v TFSI - 335 bhp
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phenyl85
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Joined: Tue Aug 09, 2016 12:45 pm

Carbon brake cooling mod

Post by phenyl85 » Tue Aug 09, 2016 2:46 pm

Hi guys, I just wanted to show you what I've been up to lately. I've made an carbon air scoop to provide the brakes with more air so they will be cooled better. Mainly the RS3 has this problem, but also the TTRS doesn't have the most perfect OEM brakes (understatement).

In the pictures below you can see what I made for my TTRS. Basically it will fit any RS model and any car with NACA ducts but I designed it on my TTRS.
This mod should prevent brake fluid boiling, pedal fade and drastically reduce pad and rotor wear and occurence of rotor warpage.



The product is 1mm thick and 15mm in height so that there will be no issues with lowered cars and speed bumps. The shape is from wide to small which creates a vortex effect forcing even more air going to the brakes.

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Not much later a measurement was done with a heat camera. The right front wheel had a carbon air scoop and the left front wheel didn't.
Two times a emergency brake test was done from 150 km/h to 10 km/h then the car was brought up to 130km/h and for 4 times the car was slowed down to 80km/h in a short period of time.
After this the car was driven for a short while after which the brake temperature was measured.

Conclusion: improvement of 23,6%.

Soon I will repeat this experiment with GiroDisc breaks on my car as I will receive them in a couple of days.

P.S Abovementioned taken into account that the right front rotor will always be hotter as the left one as Audi only produced one kind of rotor (for left and right) so actually the right rotor is going in the wrong direction.

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Basically the NACA ducts get enlarged so that more air is being forced to the brakes.


Simulations also have been done which show that a traditional scoop will get almost twice as much air moved then a NACA duct. This fits the RS3, RS4, RS5 and TTRS, other models I haven't checked yet.

Already a couple of people with a RS3 8P have mounted these, if anyone is interested in pictures just let me know.

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Paulm
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Joined: Tue Jan 06, 2004 12:23 pm
Location: Aberdeenshire

Re: Carbon brake cooling mod

Post by Paulm » Wed Aug 10, 2016 12:53 pm

Price?
BMW 540i
2018 GTR
F90 M5
X3MC
RS3 Saloon
RS7 FL best car I've owned. No faith in turbo oil screen (turbos failing) or sticking oil scraper ring causing missfires.
F10 M5 LCI still no rear grip lol
S7 black Edition Too big and heavy
S3 8V FL DSG 310ps, road noise is a joke
RS3 8P Rubbish
C7 RS6 Fantastic car but missed playing
GTR R35 800bhp, too extreme, crazy fast though
911 Turbo Remapped. Hated it
F10 M5, awesome but no rear grip
RS6 V10 700BHP crazy
Porsche Cayenne Turbo S 600bhp

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