Honda Civic Racing: Drift/Drag/AutoX/Time Attack There are different setups needed if you are using your civic for drifting, drag or track racing

Huge wings on FWD

Old Aug 9, 2004
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Huge wings on FWD

Lets say a civic was tuned and was capable of speeds excess of 150mph,


Would a large rear wing help to keep it more stable? Would you want more down force in the back like that on a front wheel drive car?
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Old Aug 9, 2004
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still wouldn't help. And you would have plenty of down force in the front considering the engine and the tranny are weighing it down.
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Old Aug 9, 2004
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Originally Posted by nindoo
Lets say a civic was tuned and was capable of speeds excess of 150mph,


Would a large rear wing help to keep it more stable? Would you want more down force in the back like that on a front wheel drive car?
i suppose it depends on different factors, but in general, if a civic was capable of speeds in excess of 150mph, then the downforce provided by the stock body (wingless/air dam less) would probably be lacking.

Originally Posted by Master
still wouldn't help. And you would have plenty of down force in the front considering the engine and the tranny are weighing it down.
im not sure where you are making that up from... why do you think race cars have front air dams and/or rear wings? downforce has nothing to do with the engine and the tranny... that is simply weight weighing down the car. downforce is, hence the name, a force created by airflow over and around an object. air dams and spoilers/wings create downforce, not heavy engines.

the air flowing underneath a moving vehicle creates lift, this happens at any speed, although it is exagerated as the speed increases. aerodynamic bits and pieces are used to create negative lift, or downforce, to provide more traction as speed increases as opposed to less.
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Old Aug 9, 2004
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Originally Posted by JamesL
the air flowing underneath a moving vehicle creates lift, this happens at any speed, although it is exagerated as the speed increases. aerodynamic bits and pieces are used to create negative lift, or downforce, to provide more traction as speed increases as opposed to less.
At normal high speeds would a front air dam and skirt make a diff on traction, lets say speeds between 100-125mph?
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Old Aug 9, 2004
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^^^yes but not enough to really worry about it.
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Old Aug 9, 2004
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Originally Posted by nindoo
At normal high speeds would a front air dam and skirt make a diff on traction, lets say speeds between 100-125mph?
it depends. are you driving your civic on a race track? are you coming off the straight going into a turn at 100-125mph? if so, then absolutely.

if you are driving 100-125mph on the highway in a straight line (which is btw) then the difference wont be as apparent.

maybe you could clarify what type of driving you intend on doing... and then i could help you more. aerodynamics are infinitely more important on race cars than they ever will be on street cars "driven fast on the street".
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Old Aug 9, 2004
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Originally Posted by JamesL
i suppose it depends on different factors, but in general, if a civic was capable of speeds in excess of 150mph, then the downforce provided by the stock body (wingless/air dam less) would probably be lacking.



im not sure where you are making that up from... why do you think race cars have front air dams and/or rear wings? downforce has nothing to do with the engine and the tranny... that is simply weight weighing down the car. downforce is, hence the name, a force created by airflow over and around an object. air dams and spoilers/wings create downforce, not heavy engines.

the air flowing underneath a moving vehicle creates lift, this happens at any speed, although it is exagerated as the speed increases. aerodynamic bits and pieces are used to create negative lift, or downforce, to provide more traction as speed increases as opposed to less.

With only going 150 mph it would still not be needed. Just lowering the car can help with the down force. As in making less space for air to go under the car to cause lift. You wouldn't need a front air damn. Shoot look at all those muscle cars they don't have air dams or wings at that matter. Sure they are rear wheel drive but they give the speeds that we are talking about and they don't need anything.
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Old Aug 9, 2004
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People seem to forget... as speeds increas, so does a cars tendency to oversteer.... SO... as JamesL said, if you are on a race track then Yes a wing of some sort may be of use. (down force is free traction afterall).

The big thing I see though is that people seem to think that the Dinky little wings they put on their cars will help..... when 1. its too small to make a noticeable difference (Except by adding more drag) and 2. its attached to the weakest piece of sheetmetal on the car(the deck lid).....



If you want to learn more about aerodynamics in regards to Racing cars...

Book
http://www.amazon.com/exec/obidos/tg...16617?v=glance


websites
http://www.belmont.k12.ca.us/ralston...ar_Racing.html
http://www.gmecca.com/byorc/dtipsaerodynamics.html
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Old Aug 9, 2004
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Master, think of this.... in an F1 car they have both a front and rear wing.... those wings are used to create extra traction for the corners.. on average the speeds in which an F1 car takes a corner is between 60 and 90 MPH.... so your 150+mph thing is bubkiss.


Downforce is FREE traction for the corners If you understood how tires make traciton you would understand this... You are increasing the load on the tires with out increasing the weight of the car!
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Old Aug 9, 2004
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Also, Look at Improved touring cars....

Such as this ITB BMW 2002


notice the big air dam in the front? that really helps these cars, but guess what?? on a race track an ITB car woll only see max speeds of around 110-120 MPH...... and thats at the end of a straight a way... Cornering speeds (where the down force from the air dam is actually usefull) is aroudn 30-60 depending on the sharpness of the corner.

Last edited by Zzyzx; Aug 9, 2004 at 10:38 AM.
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Old Aug 9, 2004
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Heres an ITC car, wich is an even slower class of car then ITB...and it still has an air dam!

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Old Aug 9, 2004
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Originally Posted by Master
With only going 150 mph it would still not be needed. Just lowering the car can help with the down force. As in making less space for air to go under the car to cause lift. You wouldn't need a front air damn. Shoot look at all those muscle cars they don't have air dams or wings at that matter. Sure they are rear wheel drive but they give the speeds that we are talking about and they don't need anything.
i guess it took you a while to think of a comeback huh?

i assume "master" doesnt stand for the degree you have in physics either?
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Old Aug 9, 2004
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and Zzyzx... you are one of the few people's opinions i respect on this forum.

i left in the first place because of the never-ending onslaught of ignorance.

but, its always good to hear from you.
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Old Aug 9, 2004
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I am ignorant

free traction owns
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Old Aug 9, 2004
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The problem with the imports sporting the Tuner wings....

1. most are too small to make any signifigant down force.
2. most are not placed in areas of clean air flow.... (thats the reason why these porsche wings, though Ricelooking, are mounted where they are..)


3. They are attaced to one of the weakest part of the car... the center of the trunk.
4. even if the wing is in "clean air" the wing its self is not tuned correctly, causeing more drag then downforce making it worthless.
5. the people sporting these whings never do the type of driving where it may be usefull (Dragrace Vs Road course).
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Old Aug 9, 2004
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Originally Posted by Zzyzx
The problem with the imports sporting the Tuner wings....


3. They are attaced to one of the weakest part of the car... the center of the trunk.
5. the people sporting these whings never do the type of driving where it may be usefull (Dragrace Vs Road course).
Agreed.
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Old Aug 9, 2004
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What is the purpose of roof scoops? Do they have anything to do with down force?

I've learned a lot at this forum, very competent people here.

Last edited by nindoo; Aug 9, 2004 at 01:09 PM.
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Old Aug 9, 2004
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Originally Posted by nindoo
What is the purpose of roof scoops? Do they have anything to do with down force?

I've learned a lot at this forum, very competent people here.
Typically on a race car (Or rally car) they are used to get fresh air to the driver/co-driver of the car.. on some Mid and rear engine cars, they are used to get fresh air to the engine.


as far as scoops and downforce.... well they make drag thats about it.
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Old Aug 10, 2004
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looks like zzyzx has this thread covered haha
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Old Aug 10, 2004
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yeah thanks zzyzx for your knowledge on this topic i have learned a lot from your posts thanks
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Old Aug 10, 2004
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I have the stock spoiler on my car, I got it strictly for performance.

lol
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Old Aug 10, 2004
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^^ oem spoilers are always awesome looking
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Old Aug 10, 2004
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Most of the WRC cars have roof scoops..
I would think they would do SOMETHING. maybe since most roof scoops you see now don't have an opening, that's just drag.

I don't like spoilers, generally, but I do like roof scoops.
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Old Aug 10, 2004
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roof scoops such on the mclaren f1 act as a ram air system. The ones on WRC cars act by providing fresh air to the drivers.
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Old Aug 11, 2004
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ahhh, that makes sense, with all that exhaust and dust and shiet flying around.. prob get fairly hot in those cars
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