mwdguy said:
Well maybe you can tell me when F1, or NASCAR cars add more wing (increase the angle of the spoiler, thus increasing the downforce) it slows the top speen they can attain down?
I don't know how you can think you can have downforce and decrease drag?
Link me to some scientific articles and then I might believe you.
then a VW mini bus should have lots of downforce right?
but yet take it against lets say the S7 which is a ton more aerodynamic which makes more downforce though?
adding more wing can make for more downforce yes and does make for more drag
but there is a difference between the idea there and what I am talking about
like adding an airdamn can improve drag by not allowing air under the car YET also helps downforce by again not letting air under the car
the little wing on the back of my car doesn't stick up in the way of the air like a spoiler on a F1 car it sits flat on the rear deck of the car just to redirect it away from the wake this way the airflow is more efficient
sure it will not create as much downforce as a wing on the F1 cars
but still it does show it's part and does make a difference
but I will rephrase what I said
the spoiler on my car is not in truth producing downforce but it does reduce lift which is something most cars do suffer from so while my car might not be putting 1000lbs (just putting a number there) of force on the tires at speed
but reduces the lift from lets say 200lbs of lift down to about 100lbs of lifting force on the tires
and a link for you plus some quotes from the links
http://wings.avkids.com/Book/Sports/instructor/race_car-01.html
The rear deck spoiler is designed to raise the rear stagnation line. In other words, the rear spoiler increases the flow under the body by ensuring that the flow from the upper surface doesn't wrap around the rear of the vehicle (need an illustration). This promotes the production of downforce at the rear of the car. Depending on the car geometry, a rear spoiler can decrease drag by reducing flow separation at the rear window.
The simplest devices available are front air dams and rear spoilers. The flow under a vehicle is disturbed by the various drive train and plumbing components. By reducing the airflow under the vehicle, a front air dam reduces the drag of the vehicle. Also, the pressure immediately behind the air dam is reduced which aids the cooling flow across the radiator. At the same time, the lift is reduced at the front of the car.
a reason why the little pieces in front of each tire on my car help even though this is for open wheel cars if you read the article it still can apply to normal cars
just works to a greater extent on open wheel cars
The tires also create a significant amount of drag for open*wheel race cars. This is due to the separation of the flow behind the tires. Several tricks have been used to decrease this drag. Most of these involve simple plates designed to divert the air around the tire, thereby, limiting the amount of flow separation behind the tire.
http://www.pricethecar.com.my/resources/tips/spoilers.htm
Spoilers are angular and liplike and are attached to or designed into the rear of the car. They can be used to create downforce like a wing, however their primary function is to reduce lift or drag. On hatchbacks a spoiler can create a pool of air ahead of the spoiler that separates the airflow from the rear of the car decreasing lift. It can also steer the airflow cleanly away from the surface of the vehicle, preventing its tendency to remain attached to the car’s surfaces. This can decrease drag and reduce the underbody pressure that contributes to lift.
might be able to find more but it will take a little bit since I think bed is calling me
but take care and hope you learn something from it
but see not at all points does a reducion of lift mean more drag
where you been dude?
