Welcome to the Australian Ford Forums forum.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and inserts advertising. By joining our free community you will have access to post topics, communicate privately with other members, respond to polls, upload content and access many other special features without post based advertising banners. Registration is simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact us.

Please Note: All new registrations go through a manual approval queue to keep spammers out. This is checked twice each day so there will be a delay before your registration is activated.

Go Back   Australian Ford Forums > General Topics > The Pub
Reload this Page Info On Underbody Downforce
Register FAQ Calendar

The Pub For General Automotive Related Talk

Reply
 
Thread Tools Display Modes
Old 02-10-2007, 09:41 PM   #1
CSV_LS1
I used to have a nice car
 
CSV_LS1's Avatar
 
Join Date: Dec 2004
Posts: 1,993
Question Info On Underbody Downforce
Can anyone point me in the right direction to learn more on how the underbody of a car can be made to create downforce?

Thanks
CSV_LS1 is offline   Reply With Quote Multi-Quote with this Post
Old 02-10-2007, 09:43 PM   #2
ardei
WP Fiesta LX
 
ardei's Avatar
 
Join Date: May 2006
Location: Eastern Suburbs, Sydney
Posts: 117
Default
http://www.autospeed.com/cms/A_107773/article.html

Also www.autospeed.com/A_2455/article.html and www.autospeed.com/A_2456/article.html
__________________
No Show, No Go - Just Woah!
ardei is offline   Reply With Quote Multi-Quote with this Post
Old 02-10-2007, 09:44 PM   #3
4Vman
FF.Com.Au Hardcore
 
4Vman's Avatar
 
Join Date: Jan 2005
Posts: 14,654
Default
Google "Ground effects".



__________________
335 S/C GT: The new KING of Australian made performance cars..
4Vman is offline   Reply With Quote Multi-Quote with this Post
Old 02-10-2007, 09:44 PM   #4
Casper
FF.Com.Au Hardcore
Contributing Member
 
Casper's Avatar
 
Join Date: Dec 2004
Posts: 12,083
Default
This might help Mauz:
http://www.symscape.com/blog/secrets_of_diffusers
__________________
Older, wiser, poorer.


Now in Euro-Trash. VW Coupe V6 4motion.
Casper is offline   Reply With Quote Multi-Quote with this Post
Old 02-10-2007, 10:01 PM   #5
CSV_LS1
I used to have a nice car
 
CSV_LS1's Avatar
 
Join Date: Dec 2004
Posts: 1,993
Default
Thanks guys.
CSV_LS1 is offline   Reply With Quote Multi-Quote with this Post
Old 03-10-2007, 12:37 AM   #6
schnoods
FF.Com.Au Hardcore
 
schnoods's Avatar
 
Join Date: Jul 2006
Location: Rockingham WA
Posts: 1,234
Default
Defusers.
__________________
A philosopher is a person who finds a problem for every solution . :Reverend:

95 EF XR8, Advance headers, Vortech V2 t trim blower, Ported Cobra Manifold, Capa Switch Chip Eliminator. 307 rwhp 395 ft/lb 13.2 @ 105mph

Now NA- AFR 165 heads, 1.6RR, Ported Cobra 269rwhp 14.2 ... needs stall and 4.11's

1977 CL Chrysler Panel Van, 360, 727 torqueflite auto soon to be restored.
schnoods is offline   Reply With Quote Multi-Quote with this Post
Old 03-10-2007, 05:51 AM   #7
WOLF
Track Red XY
 
WOLF's Avatar
 
Join Date: Nov 2005
Posts: 656
Default
Quote:
Originally Posted by CSV_LS1
Can anyone point me in the right direction to learn more on how the underbody of a car can be made to create downforce?

Thanks
thinking about 9's already????
WOLF is offline   Reply With Quote Multi-Quote with this Post
Old 03-10-2007, 06:10 AM   #8
normxb
FF.Com.Au Hardcore
 
normxb's Avatar
 
Join Date: Jan 2006
Location: Sitting on the Dunny , Contemplating "What to do Next".
Posts: 505
Default
Quote:
Originally Posted by CSV_LS1
Can anyone point me in the right direction to learn more on how the underbody of a car can be made to create downforce?
Thanks
Or the "Pills" the Dr put me on a few months ago , 22kg's in 6 1/2 weeks ,,, :yeees: Lol
__________________
XB Futura 302 , Wife ED Fairmont ,1994 Polynesian Green.
Daughter No 1 KJ Laser , Daughter No 2 KH Laser

Keeping FORDS in the family

(Embarressment :yeees: , Son now has a "Camira" : )
"Look Right , Look Left , Look Right , BEFORE crossing Roads"
normxb is offline   Reply With Quote Multi-Quote with this Post
Old 03-10-2007, 10:02 PM   #9
Strucnjak
Starter Motor
 
Join Date: Apr 2005
Posts: 15
Default
read competition car downforce and competition car aerodynamics by simon mcbeath. Really great books with fairly simple explanations on how race car aerodynamics work and there is a great section devoted to ground effects and there is also some data and profiles that you can use in the book.

If you have any questions PM me, ill be more than happy to help, i have spent enough time in our wind tunnel with my teams aero geeks to answer your questions.

http://www.amazon.com/Competition-Ca.../dp/1844252302
http://www.amazon.com/Competition-Ca.../dp/1859606628
Strucnjak is offline   Reply With Quote Multi-Quote with this Post
Old 04-10-2007, 12:46 PM   #10
CSV_LS1
I used to have a nice car
 
CSV_LS1's Avatar
 
Join Date: Dec 2004
Posts: 1,993
Default
Quote:
Originally Posted by XR8Rob
thinking about 9's already????

I'm trying to work out an anti-gravitational device to lighten the car. And aim for 7's!

Strucnjak,
You have a PM.
CSV_LS1 is offline   Reply With Quote Multi-Quote with this Post
Old 04-10-2007, 04:22 PM   #11
xbgs351
FF.Com.Au Hardcore
 
Join Date: Mar 2005
Location: Vic/NSW
Posts: 2,687
Default
What sort of car are you thinking of using them on?
xbgs351 is offline   Reply With Quote Multi-Quote with this Post
Old 04-10-2007, 05:49 PM   #12
CSV_LS1
I used to have a nice car
 
CSV_LS1's Avatar
 
Join Date: Dec 2004
Posts: 1,993
Default
More of a hobbie atm. With plans to put it towards a 80's model Alfa Romeo GTV project.
CSV_LS1 is offline   Reply With Quote Multi-Quote with this Post
Old 05-10-2007, 05:51 PM   #13
xbgs351
FF.Com.Au Hardcore
 
Join Date: Mar 2005
Location: Vic/NSW
Posts: 2,687
Default
Quote:
Originally Posted by CSV_LS1
More of a hobbie atm. With plans to put it towards a 80's model Alfa Romeo GTV project.
Would be a waste of effort on a car like that. Even on single seaters of the 80's such as Australian Formula Twos, they regained the time lost from going from GE to running flat bottoms within a year. The cars were a bit faster with GE sliding skirts, but they are banned even in historics.
xbgs351 is offline   Reply With Quote Multi-Quote with this Post
Old 06-10-2007, 02:49 AM   #14
prof-rabbit
Regular Member
 
Join Date: Dec 2006
Posts: 79
Default
Quote:
Originally Posted by xbgs351
Would be a waste of effort on a car like that. Even on single seaters of the 80's such as Australian Formula Twos, they regained the time lost from going from GE to running flat bottoms within a year. The cars were a bit faster with GE sliding skirts, but they are banned even in historics.
Wing basics are flat bottom and a curved top create lift, the higher the air flow the greater the lift, after that you have reynolds numbers for curves and it gets complicated, then there is "ground effect", pressure, turbulence, the shape of your wheel centers and so on.

The funniest thing I have seen in Adelaide is a ricer with a large double spoiler that included equally large vertical "stabilizers" on the ends!
prof-rabbit is offline   Reply With Quote Multi-Quote with this Post
Reply

« Previous Thread | Next Thread »

Forum Jump


All times are GMT +11. The time now is 01:09 AM.

Australian Ford Forums - Privacy Statement - Terms of Service - Top

Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Other than what is legally copyrighted by the respective owners, this site is copyright www.fordforums.com.au
Positive SSL