~ Random Car Pics Thread ~
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Dr. Marlow
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down_shift
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mynameismike
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mynameismike
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Greg
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uhm correct, the underneath of a car is not aerodynamic, unless there is a tray or panel on the chassis. why do you think purpose built race chassis have undertrays.
lowering a car reduces the frontal area of the car, which reduces drag.
lowering a car reduces the frontal area of the car, which reduces drag.
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When talking fuel economy you're talking drag-coefficience. Air needs to pass both above and below the car. You lower a car, you're basically making it a wedge. Better handling, sure. Better drag coefficient, no.Maudite wrote:uhm correct, the underneath of a car is not aerodynamic, unless there is a tray or panel on the chassis. why do you think purpose built race chassis have undertrays.
lowering a car reduces the frontal area of the car, which reduces drag.
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Greg
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I know I'm beautiful, but suck this...
there are limits to every thing, but lowering does increase efficiency and reduce drag by reducing under car airflow, and the streamlining of the air that does flow over the car.
Here are things that can be done to improve your vehicle's aerodynamics:
* Lower the car - Lowering the car reduces the effective frontal area, increasing efficiency. Note that this only works up to a certain point. There will be an ideal ride height for each car. According to this article, 2.7" ground clearance is a good minimum hieight to shoot for. According to Mercedes, "Lowering the ride height at speed results in a 3-percent improvement in drag."
* Clean up the underside of the car. - Installation of a "body pan", while a labor intensive operation, will provide a significant improvement in mileage. More...
* If a body pan is not practical, an air dam will redirect air that would normally pile up under the car causing drag. Not as good as a body pan, but better than nothing. Should be combined with side fairings.
* Clean up the front of the car. Basically the smoother the better. If the car has a large air intake under the bumper, it may not need that opening above the bumper (they are often just styling cues). An aerodynamic plastic or composite panel can be built to cover the opening.
http://www.recumbents.com/car_aerodynamics/
there are limits to every thing, but lowering does increase efficiency and reduce drag by reducing under car airflow, and the streamlining of the air that does flow over the car.
Here are things that can be done to improve your vehicle's aerodynamics:
* Lower the car - Lowering the car reduces the effective frontal area, increasing efficiency. Note that this only works up to a certain point. There will be an ideal ride height for each car. According to this article, 2.7" ground clearance is a good minimum hieight to shoot for. According to Mercedes, "Lowering the ride height at speed results in a 3-percent improvement in drag."
* Clean up the underside of the car. - Installation of a "body pan", while a labor intensive operation, will provide a significant improvement in mileage. More...
* If a body pan is not practical, an air dam will redirect air that would normally pile up under the car causing drag. Not as good as a body pan, but better than nothing. Should be combined with side fairings.
* Clean up the front of the car. Basically the smoother the better. If the car has a large air intake under the bumper, it may not need that opening above the bumper (they are often just styling cues). An aerodynamic plastic or composite panel can be built to cover the opening.
http://www.recumbents.com/car_aerodynamics/
Bikes, Meat, Drama, Meat, Gossip, Meat, Metal, Meat, Buttsex, Meat, Family and some Drifting.
