woo hoo!

AcingTeam · Post by **AcingTeam** » Wed Apr 27, 2005 2:20 am

How can a hood scoop provide down force??

kinkyllama · Post by **kinkyllama** » Wed Apr 27, 2005 2:50 am

Thats what i read somewhree....

The air that goes under the car must merge with the air that goes over the car. If this happens in a bad way, a low pressure area is created at the rear of the car like a vaccum, thus pulling the car back and creating drag. But on a street car im sure any wing would be better than no wing.

Audacity Racing · Post by **Audacity Racing** » Wed Apr 27, 2005 2:56 am

hood scoops aren't a downforce thing so much as they are drag... if anything... the air being rammed into the hole would cause the front to lift off the ground (but you have to figure the amount of force you're dealing with is like a tmost 5 pounds). the effects of the air travelling through the engine and under the car would be minimal as well...

long and short of it, a wing is the only practical way to gain downforce an a daewoo (or any street car). canards and bodykits don't do jack until the vehicle reaches a speed where moving an object through air creates a vacuum... usually around 100-120 depending greatly on humidity and air pressure.

this is evident in formula one cars... the wings only supply needed down force when contrials appear form the rear wing (granted the humidity is high enough to vaporize the water in the air)... this is really complicated... any one who really wants to get into it... pm me and we can talk

kinkyllama · Post by **kinkyllama** » Wed Apr 27, 2005 3:02 am

Do they have universal type canards.. or can i make some myself that for sure could help? I know someone that used a parts car and made some out of that but i have no way to get ahold of them.

On the track i ran this past weekend, and im running one day again in two weeks i brake 100mph on every lap. If i get a strut bar ill be able to come out of the corner faster to the straight away and hope to brake 110 on every lap... and that same weekend im racing on a track that is supposed to be even faster so i reach pretty high speeds.

Audacity Racing · Post by **Audacity Racing** » Wed Apr 27, 2005 3:06 am

you can buy universal carbon fiber cannards that need to be trimed for your car... but i really don't know that you'll see a major difference in handeling... maybe at way high speed... but canards really only work when going straight...

try these...

http://mr-motorsports.com/store/product ... cts_id/900

http://www.aprperformance.com/products_ ... tegoryID=6

http://www.speedstash.com/apr_front_wings.html

you can get em anywhere that sells tuner junk anymore...

TheGreatAndPowerfulOz · Wed Apr 27, 2005 12:04 pm

They look like they'd be great to chop someone's leg off when they got in your way when you're driving on the sidewalk! LOL

Cliff

AcingTeam · Post by **AcingTeam** » Wed Apr 27, 2005 3:04 pm

They sell those on eBay for way less

MMamdouh · Post by **MMamdouh** » Wed Apr 27, 2005 3:59 pm

Audacityracing... i have some basic info about downforce and all so i am going to state them here and please tell me if i am right or not... i hate to tell something to other people and find out i was wrong so i need your confirmation here.

1) the rear of the car gets lifted due to the "aeroplane effect" where air traviling above the car moves faster than the one under it thus creating low pressure over the car and cause the lift phenominon.

2) to overcome that lift you can place a wing on the rear of the car to exert enough downforce to keep its rear on the ground.

3)you can also reduce the amount of air going under the car thus creating some sort of a vacumm under it and keep it sticking to the ground to overcome the lift.

4) those arodynamic effects are effective at high speeds... some 160 Km/h or more so if you are under that speed, wings and all won't do you anything.

MMamdouh

Audacity Racing · Post by **Audacity Racing** » Wed Apr 27, 2005 6:53 pm

most rear wings and spoilers begin to take effect around 60 miles an hour. the full potential of the wing is not utilized until around 110 (as previously stated). My daewoo, with the rear wing setup as is, would have a rear heavy attittude when traveling that fast (something like 35/65). My woo was basically set-up for autocross/highway driving... not track speeds.

as for the difusser effect (creating a vacuum under the car to suck it to the road)... the effect of a diffusing setup can be seen nearly instantaneously at any speed (granted the effects are near nothing at slow speeds... but they do exist). merely strapping a body kit to your car does not offer down-force (that's not saying that some don't supply down-force though). when comparing the daewoo (or any of it's cousins) in aero properties... look at touring cars and how they are setup. on some you will notice huge flat, almost wing like structures off the front bumber that can be adjusted up and down... this is to try and seal the underside of the car off as best as possible. the rear of those cars always have a rectangular tunnel coming from under the car. the basic theory is: if there is only slight amounts of air coming under the car... the best way to remove it is out the back... while doing so, if you can change the volume or temp (and thus pressure) you can create a sort of vacuum effect wile the car is in motion. the rectangular tunnels are shaped so that the exit at the rear of the car is larger then the beginning... thus as the air travels down the tunnel it is forced to change volume and drop in pressure. Anyone interested in a custom diffuser should pm me... but you have to remember that a diffuser would be totally useless for street driving and would end up getting ripped off when you pulled in a place with speed-bumps.

i'm going to make an informative post in the next day or so in the tech section on all things aero for street cars (touring and gt cars basically)

pm me for details on specifics with your car and what you can do...