Air flow for wheels/brakes

[fa57 son]

Guys,

I’m having issues with heat through the brakes/ tyres and wheels.

I have melted 2 spigot rings and 3 center caps i have now taken out the inner arches and it still holds a lot of heat, thinking of taking out the fog lights but...

Will this have an adverse effect on the air movement around the wheel and or create lift.

Thanks

Andrew

 

[Fred@BTM]

you melted the spiggot rings? erm are the calipers ok?

no your car will not turn into a NASA vehicle if you remove the fog lights

 

[fa57 son]

Yee im running ap racign brakes with toyo R888 not sure quite why theres so much heat must be because of the brakes and tyres getting so hot.

i didnt think so .. but you know air flow does some funny things..

 

[CraigIrl]

What wheels are you running?

 

[Bren Rogers]

Bearings ok? With r888s that puts a lot more pressure on them in the corners, so could be close to failure.

 

[fa57 son]

im not sure what the wheels are .. they are 5 spoke alloys..

 

[Space Cadet]

I assume you’re talking about when on track, otherwise if you are creating that much heat on the road something is definitely faulty/broken. I’m running Willwood 4-pots with 1166 pads, plus also 888’s on Speedline 2118’s and have no problem with excessive heat. I’ve removed the fog-lights and cut a hole in the inner arch though so may be that’s the answer for you. If on track are you getting a lap’s cool-down in?

 

[fa57 son]

Yeah on track... yeah maybe ill remove the fog lights and see how i get on.. removing the arches helped so i think removing the Fogs will allow the air into the wheels

 

[mr.pink87]

Picture of wheels? Could be the wheels preventing a good airflow due to poor design etc.

 

[DanFreemanPhoto]

I can't say I've felt any difference taking my fogs out and running brake ducts, in terms of any lift that is

 

[Space Cadet]

If anything, I would imagine removing the lamps and cutting the ducts would add drag rather than creating lift therefore should theoretically add down force. This is all immaterial on a ‘heavy’ Clio surely!?

 

[fa57 son]

yeah i would have thought not going to make much differance... in terms of down force .. my car has had a bit of a diet.. no rear seats roll cage/ bucket seats ect.

 

[Ricardos]

When running the foglight ducts on my Clio it would 'lift' at speeds over 75mph, i taped them up and it solved the problem. I was told it was air completely filling the inner arches at high speed, the last thing i needed running over 100mph at the Nurburgring.....

 

[Tony Hunter]

Strange?,we have never taken off yet with this set up.

 

[jimjim150]

I'm tempted to cut a big hole in the wheel arch lining, just as I HATE those bolts for the bumper.

 

[mantis946]

Strange?,we have never taken off yet with this set up.

:lolup:

 

[GeorgeH]

Strange?,we have never taken off yet with this set up.

Ovbiously not going quick enough

 

[Tony Hunter]

We needs a turbo innit.

 

[Space Cadet]

Wickid man.

 

[Sir_Dave]

Ive removed fog/arch liners.

Less heat, but still no 747.

Perfect.

 

[mantis946]

Ive removed fog/arch liners.

Less heat, but still no 747.

Perfect.

Ah if only we could have hub mounted fans :race:

 

[Ricardos]

Ok, so it's F1 and Le Mans speed

http://auto-racing.speedtv.com/article/le-mans-the-aerodynamic-influence-of-louvers-on-prototypes/

http://www.f1technical.net/forum/viewtopic.php?f=5&t=9351

 

[shiyan]

When running the foglight ducts on my Clio it would 'lift' at speeds over 75mph, i taped them up and it solved the problem. I was told it was air completely filling the inner arches at high speed, the last thing i needed running over 100mph at the Nurburgring.....

Hope you're kidding. I've gotten rid of the fog lights, replaced them with ducts, have noticed no such thing, and I'm at the 'Ring pretty often.

 

[alolympic]

If you introduce more air into the wheel arch, you will have more turbulent air in there, thereby increasing drag. Without some form of arch ducting, then you will theoretically increase front end lift, however, you'll never feel it at the speeds you will ever experience, it might start having an effect above 150mph.
It is a misnomer talking about downforce, on our cars, and virtually every road car, the best you can get is to reduce lift, rather than be able to create downforce.
Look at modern DTM cars for lessons in aerodynamics.....

 

[Gaz.]

Why not run some proper venting into the centre of your discs?

 

[clio_luke]

can't see how you are melting spigot rings tbh, i think its more than just bad ventilation. however, no fogs and oz ultraleggeras keep my brakes nice and cool.

 

[fa57 son]

Nah seemed like they would have to have got so hot ah well we can try and take fogs out and see what happens...