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IRA11Y
Forums Junkie

Club Member

Location:
sydney
Registered:
May 2002

Re: Rear spoilers on FWD cars

Thu, 04 March 2004 05:26

Oh dear

seems a technical discussion has been taken the wrong way again....

Quote:

we weren't talking about OEM wings at all,

sorry my mistake...up till now i diddnt see anyone mention a properly designed performance wing

Quote:

And yes a properly designed wing will produce measurable downforce and will aid rear end grip of any car,

agreed.. but it still doesent improve suspension Smile

Quote:

if you increase sprung weight on a spring

increaseing weight and the affect of downforce do not act the same way, weight is linear, downforce is not.

Quote:

draw a free body diagram of the spring.

drawing a diagram wont show the affects of downforce on suspension, youll need to test it in a wind tunnel ( f1 do it every day ).. and i still smaintain it doesent improve suspension. In your last post you seemed to concerntrate more on the wing affecting grip and handling which i agree with, still cant see how it improves suspension though, please feel free to educate me , im always keen to learn how to improve my performance. Smile

Quote:

why were they used on the supertourers

because it improves there high speed handling.. supertourers regularly are at speeds in excess of 150Kmh, and there are a large number of tracks in Australia that have high speed corners, eg Eastern Creek where the wing has the greatest affect, these wings would be pretty much useless on a road car that wont have the same G forces applied in 90% of the time spent driving, the only time i can see it being beneficial to a road car is going down the highway in excess of 150kmh. In most cases they gain better effects from the front splitter around the track than the rear wing anyway.

Quote:

Its all about finding that balance with a race car
On a road car most wings are a WANK.

Amen to that

Quote:

Remamber the most Important Function of a wing is to help increase Cornering speed
by putting more Force (G) on the tyres as they are whats in contact with the road

which is mostly done at high speed, as thats where the most force from any air effects is applied to the tyres.

some sites that might help provide some insight to it all are....

http://www.hanleyinnovations.com/racecarpack.html

http://www.allianz.com.au/internet/allianz.nsf/doc s/MCFOFE+Wings

http://www.nas.nasa.gov/About/Education/Racecar/ae rodynamics.html

http://www.racer.nl/tutorial/wings.htm

youll notice that when people talk about downforce they use the term "high speed" a lot

[Updated on: Thu, 04 March 2004 05:26]

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