rear wings useless?

General Questions and comments

Moderators: IMC, Club Staff

User avatar
col2560
Mechanic
Posts: 434
jedwabna poszewka promocja
Joined: Fri Jun 06, 2008 5:00 pm
Location: seymour, tennessee, usa
Contact:

rear wings useless?

Post by col2560 »

does the rear wing actually do anything on the fto? or is it just for looks? seems to me that its of no use on a front wheel drive car, maybe im wrong.
my motto; do nothing, then rest.
User avatar
aza013
NSW Coordinator
Posts: 9089
Joined: Mon Mar 26, 2007 5:00 pm
Location: The Shire
Contact:

Post by aza013 »

it is only for looks when you are on the streets is it only really starts working at speeds over 140+kph.
and it helps on the track :twisted: but then by saying that it may be a diferent story with the gpx wing :?
User avatar
zuihoujueding
Oldtimer
Posts: 1980
Joined: Thu Aug 31, 2006 5:00 pm
Location: Sydney

Post by zuihoujueding »

+add to car aesthetics
+improves downforce while cornering at high speed
+Standard issue for all sports car

-reduce rear view visability
-increase weight

wings works for all cars of all drives. theres only superbly designed wings and those for show.
User avatar
I8A4RE
QLD Coordinator
Posts: 9594
Joined: Mon Aug 28, 2006 5:00 pm
Location: BOOSTIN in front of you
Contact:

Post by I8A4RE »

Agree with mostly what has been said above. On the street a wing is totally useless, unless you travel a very high speeds.


It has nothing to do whether the car is FWD, RWD or AWD. It is about aerodynamics which the drive train plays no part.

I believe the factory wing, even in a racing situation, would have an absolute minimal or no advantage what so ever. It is majoritly for aesthetics only.
theres only superbly designed wings and those for show.
REALLY!!!!! Nothing in between eh?...........Bullshit
CHRISTIANITY: The belief that a cosmic Jewish Zombie who was his own father can make you live forever if you symbolically eat his flesh and telepathically tell him you accept him as your master, so he can remove an evil force from your soul that is present in humanity because a rib-woman was convinced by a talking snake to eat from a magical tree...
User avatar
da_msta_chizz
Grease Monkey
Posts: 395
Joined: Sun Dec 16, 2007 6:00 pm
Location: Central Coast, NSW

Post by da_msta_chizz »

Well, no i'm not really sure the wings do anything on the street.
Although i'm sure on the freeway doing 120 if you hit a puddle and the rear end lets loose, the wing will help atleast a small bit to keep it from spinning or something.

..Had a mate who used to drive a boosted TT Supra with the standard wing, and going about 180 (disclaimer - "on the track") when taking corners, you can actually feel the wing helping the back get some grip.

Wings do actually do something, but not really much under above freeway speeds (take, for example, the Porsche Carrera GT - wing only lifts up at over 130km/h).

Plus, they look damn cool (especially the vR one).
[img]http://i333.photobucket.com/albums/m389/damstachizz/sunkills.jpg[/img]
User avatar
khunjeng
Oldtimer
Posts: 4455
Joined: Mon Oct 24, 2005 5:00 pm
Location: Melbourne, Victoria

Post by khunjeng »

the_msta_chizz wrote:Well, no i'm not really sure the wings do anything on the street.
Although i'm sure on the freeway doing 120 if you hit a puddle and the rear end lets loose, the wing will help atleast a small bit to keep it from spinning or something.

..Had a mate who used to drive a boosted TT Supra with the standard wing, and going about 180 (disclaimer - "on the track") when taking corners, you can actually feel the wing helping the back get some grip.

Wings do actually do something, but not really much under above freeway speeds (take, for example, the Porsche Carrera GT - wing only lifts up at over 130km/h).

Plus, they look damn cool (especially the vR one).
#1 which track or road is your friend taking corners at 180? lol
#2 the FTO GPX spoiler is too low
#3 the fto GPX spolier is not angled at all
#4 I doubt the GPvR is much better, although it appears to be.

The function is for both downforce and stability under braking...but I must say most of them are a toss and def. a toss at normal speeds

However when i added my GTR spoler added about 0.5s down the quarter mile...a few other poeple have had similar results..also playing with my GTR wing angle produced suprisingly different results on race meets.
User avatar
da_msta_chizz
Grease Monkey
Posts: 395
Joined: Sun Dec 16, 2007 6:00 pm
Location: Central Coast, NSW

Post by da_msta_chizz »

khunjeng wrote: #1 which track or road is your friend taking corners at 180? lol
Eastern creek & maybe this road [33.193174, 151.506232]
That road is wicked. It has massive sized hills :D
khunjeng wrote: #4 I doubt the GPvR is much better, although it appears to be.
But..aza said so 8O
Last edited by da_msta_chizz on Mon Aug 25, 2008 11:33 pm, edited 2 times in total.
[img]http://i333.photobucket.com/albums/m389/damstachizz/sunkills.jpg[/img]
User avatar
aza013
NSW Coordinator
Posts: 9089
Joined: Mon Mar 26, 2007 5:00 pm
Location: The Shire
Contact:

Post by aza013 »

:lol: yes on the track you can see it flexing down at speed.
User avatar
col2560
Mechanic
Posts: 434
Joined: Fri Jun 06, 2008 5:00 pm
Location: seymour, tennessee, usa
Contact:

Post by col2560 »

i can understand that down force is good if you have rear wheel drive. down force = better traction. maybe the front spoiler works the same way on a front wheel drive car.
my motto; do nothing, then rest.
User avatar
vipfto
Forum Moderator
Posts: 4154
Joined: Mon Oct 29, 2007 5:00 pm
Location: Adelaide

Post by vipfto »

I can say with my fto that at high speed 150- 200ish (private roads of course) that car was noticably more stable both straight line and mild degree high speed cornering with wing on. When I removed it and did same thing (same private road) could certainly notice the difference less stable all round.
And no I had not changed any other settings in any way
FTO GR-TURBO
172KW ATW @ 11PSI
User avatar
Bennoz
National President
Posts: 23676
Joined: Fri Jan 21, 2005 6:00 pm
Location: Sydney
Contact:

Post by Bennoz »

I get a bit out of the VS wing, especially when it set on the highest level, but yeah only at speed. The last corner at the end of the straight at Oran park (GP circuit) is a 160kmh corner, can feel the ass being quite squat.
User avatar
zuihoujueding
Oldtimer
Posts: 1980
Joined: Thu Aug 31, 2006 5:00 pm
Location: Sydney

Post by zuihoujueding »

Bennoz wrote:I get a bit out of the VS wing, especially when it set on the highest level, but yeah only at speed. The last corner at the end of the straight at Oran park (GP circuit) is a 160kmh corner, can feel the ass being quite squat.
160kph corner! sure want to try it out sometime! :twisted:
User avatar
xSlurpee
Oldtimer
Posts: 1274
Joined: Mon Apr 21, 2008 5:00 pm
Location: Sydney 2163

Post by xSlurpee »

Wow ... 160kmh 8O
i skid the sh*ts doing a corner at 80kmhs and nearly hit onto the curb (not a curver its turning into new street)
User avatar
vipfto
Forum Moderator
Posts: 4154
Joined: Mon Oct 29, 2007 5:00 pm
Location: Adelaide

Post by vipfto »

xSlurpee wrote:Wow ... 160kmh 8O
i skid the sh*ts doing a corner at 80kmhs and nearly hit onto the curb (not a curver its turning into new street)

Ha ha noob :lol: you will get better with more experience
FTO GR-TURBO
172KW ATW @ 11PSI
User avatar
RK1-WhiteKnight
Apprentice
Posts: 30
Joined: Thu Nov 22, 2007 6:00 pm
Location: New Zealand
Contact:

Post by RK1-WhiteKnight »

Theoretically they delay separation of airflow so it becomes turbulent well behind the car which makes it run more efficiently because of reduced drag, as well as creating down force. If you take a van on a dusty road it will have dust all over the back of it because the air becomes turbulent as soon as it passes around it.

Practically they do f**k all lol
User avatar
borntospeed
Apprentice
Posts: 88
Joined: Fri Feb 29, 2008 6:00 pm
Location: Sydney

Post by borntospeed »

Hi guys, thought i'll add my 2 cents worth.

I did my thesis on aerodynamics on V8 supercars (Ford). the wing is pretty much something to add to the "fierceness" and looks of the car at speeds below 150km/h. above that speed, you start to notice the car feels slightly more stable. the size of the wing and the angle of attack (AOA) can increase downforce up to 200N or more. that's why the V8 supercars have such large wings.

Also, they have body kits that help channel the air to the rear wing. raising the AOA too high can end up stalling the airflow, resulting in your wing being totally useless. a wing relies on Benoulli's effect, much like an aerofoil of an airplane wing. only that it works in reverse.

in actual fact, the underbody of the car plays a more critical role in your aerodynamics. putting a rear diffuser makes more sense as diffusers work even in low speeds of 30km/h. therefore making more sense for street use. unfortunately, it is hard to channel the airflow under the car to the diffuser because of all the obstructions such as muffler and piping, fuel tank, etc...

also, ground effects play a part. you can increase front grip by lowering your car and having a front spiltter/diffuser. unfortunately, it comes at a cost of drivability and sydney roads. also, there is an optimum height to set the height of the car. too high or too low will actually decrease the aerodynamic grip.

in my opinion, in everyday street driving, and speed limits of 110km/h, you can remove your rear wing to save weight. to improve aerodynamic grip, put a front spiltter, rear diffuser (get a proper bodykit that have vents for the tyres) and you should notice an extra 100-200N of downforce (estimated)

if some one can provide me with a CAD model of the car, i can run a 2D and 3D CFD simulation and be able to tell you how much downforce you are adding to the car by changing ride height, AOA of the wing and adding diffusers and spiltters.

hmm... think i made it sound a little too technical. sorry if i bored most of you...
User avatar
vipfto
Forum Moderator
Posts: 4154
Joined: Mon Oct 29, 2007 5:00 pm
Location: Adelaide

Post by vipfto »

I reckon thats well put mate and pretty much sums it up rather well
FTO GR-TURBO
172KW ATW @ 11PSI
User avatar
xSlurpee
Oldtimer
Posts: 1274
Joined: Mon Apr 21, 2008 5:00 pm
Location: Sydney 2163

Post by xSlurpee »

vipfto wrote:
xSlurpee wrote:Wow ... 160kmh 8O
i skid the sh*ts doing a corner at 80kmhs and nearly hit onto the curb (not a curver its turning into new street)

Ha ha noob :lol: you will get better with more experience
Bad rubber they're like under 50% thread left :P

Just a question, at the tracks ... is it likely to take a corner too quickly and full roll your car? and what if your close to another car and accidently bump each other ... do they happen often? :lol:
User avatar
aza013
NSW Coordinator
Posts: 9089
Joined: Mon Mar 26, 2007 5:00 pm
Location: The Shire
Contact:

Post by aza013 »

xSlurpee wrote:Just a question, at the tracks ... is it likely to take a corner too quickly and full roll your car? and what if your close to another car and accidently bump each other ... do they happen often? :lol:
it can hapen but you have to hit somthing ie pothole or roll a rim under the car well lots of factores can make you roll :?
as for bumping another car yep it can and dose hapen but a lot of the time you keep a good space apart so its all good.

the best track to get on first I would say is wakfield park big open track :twisted:
if you stuff up you just hit the grass or itty litter.
User avatar
KJ_bob
Mechanic
Posts: 445
Joined: Wed Jun 04, 2008 5:00 pm

Post by KJ_bob »

200N... like having a five year old sit on the back of your car as u corner?
Post Reply