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Author
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Topic: Aerodynamics
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Primer GR40
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Member # 476
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How fast can I go in my 96 Cobra before aerodynamics will put me in danger?? I have the griggs setup if it matters.
[ May 15, 2003, 12:27 PM: Message edited by: Blown Mystic ]
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Superdupercharged Cobra
No Transmatic Notch
Posts: 2108 | Registered: Sep 2001
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88gt
Custom
Member # 579
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It's always an issue.
I don't think your question is very clear.
Posts: 1482 | From: Santa Clara/Bay area | Registered: Nov 2001
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Primer GR40
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Member # 476
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Ok, If Im doing 175mph will my car flip with a small gust of wind.
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Superdupercharged Cobra
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Posts: 2108 | Registered: Sep 2001
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94Blackout
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Member # 2541
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I'm gonna go out on a limb here (heavy sarcasm), but you aren't doin 175 in your car.
If you want to be hypothetical, there wouldn't be enough lift at 175 mph with the shape of a Mustang to take flight unless you hit a large bump to act as a ramp. Even then you wouldn't be "flying", it would just be physics.
I guess what I'm gettin at is don't worry about it.
edit: Those F1 kart racers are the only cars that aerodynamically speaking are able to simply "fly" becasue of excessive undercarriage lift.
[ May 15, 2003, 12:49 PM: Message edited by: 94Blackout ]
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87 5.0 LX: Exploded
94 Cobra: Totalled
94 GT Vert: Rear ended
98 Charged GT: Sold
65-67 2+2 Fastback: Someday...
Posts: 704 | From: San Jose, CA | Registered: Mar 2003
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JoeT
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Member # 298
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the rear end of a mustang can get very light at speed--- I guess I'd take it to Watkins Glen and get a few laps in and work your way up, you'll feel it if there's any problems.
and his car has enough power to push past 175 FYI.
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1984 Ford Tempo AOD--- RIP
Posts: 6785 | From: San Jose | Registered: Jun 2001
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Red97SVT
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Member # 2811
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Well I before I saw that you have a Vortech, I was going to say you can't hit 175.
At those speeds you would want to keep air out from under the car and improve down force. This is the reason the 00R has the splitter and the big wing. Will it flip? I dunno. Who can say. The problem is that it costs BIG $$$ to wind tunnel test at those speeds and as far as I know nobody has done it with the 94-98 Mustang. Ford may have with the 00R but I'm not even sure about that, probably just did computer modeling or some such thing.
I have often wondered if a Saleen front and rear would help with high speeds. There was a guy John Buscuma (spelling?) that was trying to hit 200+ in the Silver State. He had a web site with a lot of pictures which showed some of the areo mods he had made. MM&FF or 5.0 did an article too a year or 2 ago.
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Engine: HCI forged 0.30' over N/A.
Suspension: Full Griggs by Apex.
Drive train: T-56, Auburn pro, 31 spline axles, 3.73s.
Posts: 246 | From: Manteca | Registered: May 2003
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94Blackout
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Member # 2541
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Even with a blower, 175 seems a bit high to be hittin on a track. But all the more power if you want to try.
Obviously handling will be an issue at that speed, but only side to side; having the front end flip up on you would be VERY hard to do. I'd worry about roll more than lift.
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87 5.0 LX: Exploded
94 Cobra: Totalled
94 GT Vert: Rear ended
98 Charged GT: Sold
65-67 2+2 Fastback: Someday...
Posts: 704 | From: San Jose, CA | Registered: Mar 2003
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season'd 88
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Member # 169
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if your considering the silver state challenge or whatever its called, those roads from battle mtn. to austin can throw a big cross wind at ya and there are some healthy dips as well as !!!!WAS THAT A FRIGGEN COW!!!! yes its open range. as far as aero goes, only one way to find out. ![[patriot]](graemlins/patriot.gif)
Posts: 1383 | Registered: Feb 2001
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BlackDrop50
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Member # 1715
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quote:
Originally posted by 94Blackout:
I'm gonna go out on a limb here (heavy sarcasm), but you aren't doin 175 in your car.
1 alphanumeric - 460rwhp
Posts: 1379 | From: 510 East Bay | Registered: Aug 2002
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Primer GR40
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Member # 476
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Im pretty sure I could get it up to around 180mph, but I'm just not sure how stable/safe it is. I wish I had the money to put a front splitter on. The reason Im asking (I wish I could afford silver state races) is Ill be going down I5 and was hoping to hit a few open miles. I probably wont go past 160 for now, untill I get an aftermarket speedo ![[Big Grin]](biggrin.gif)
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Superdupercharged Cobra
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Posts: 2108 | Registered: Sep 2001
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94Blackout
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Member # 2541
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Well, good luck brother. The best stretch is 90 miles before the Grapevine, in Kerns county. Flattest grounds, but also best for gettin a crosswind. Drive safe!
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87 5.0 LX: Exploded
94 Cobra: Totalled
94 GT Vert: Rear ended
98 Charged GT: Sold
65-67 2+2 Fastback: Someday...
Posts: 704 | From: San Jose, CA | Registered: Mar 2003
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Primer GR40
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Member # 476
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I only need about 4 good miles
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Superdupercharged Cobra
No Transmatic Notch
Posts: 2108 | Registered: Sep 2001
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Primer GR40
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Member # 476
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posted
anybody else got a clue?
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Superdupercharged Cobra
No Transmatic Notch
Posts: 2108 | Registered: Sep 2001
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166 Merlo
FELONY
MOTORSPORTS
Member # 1549
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Hey this is off topic a bit, but what have you done to your suspension and how much money did it run you? was it worth it for you? I been thinking that after i finish this 65' im going to make a gr350 or a nice open track car. ![[burnout]](graemlins/burnout.gif)
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'89 - Boss Coupe
'70 - Drop Cutthang
'68 - Cougnut
'87 - 0166, Its real
Posts: 3953 | From: Thebay | Registered: Jul 2002
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Primer GR40
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Member # 476
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I have the Griggs auto-x/opentrack kit. It runs over 5k in just parts alone. I havent been able to take it into the turns yet, but Im getting it tomorrow, and I'll let you know how it is.
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Superdupercharged Cobra
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Posts: 2108 | Registered: Sep 2001
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BlackNGold
CaliforniaFords.com
Moderator
Member # 655
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Well, to answer your question, anything past 120mph your gonna need a lot of extra down force...I'm talking from experience...
I've taken my car to around 160mph...5,000rpm+ in 5th gear with 3.55's.....
My car was extremely light!...At top speed it required A LOT of steering input just to change lanes...
Front chin spoiler's are to direct air around the car and keep it from getting air underneath the car...If you get air under the car its NOT going to flip ![[Roll Eyes]](rolleyes.gif) , its gonna lose grip with the road and probably make you loose traction like you would in the rain only your going a lot faster ...
The rear wing/spoiler holds the car down and gives a lot of downforce to the car....The '00 Cobra R Spoiler add over 200lbs of downforce at only 120mph(So I've heard).....
Basically your car will be extremely light at 175mph....Whatever downforce you can add will be great....
[QUOTE]((94Blackout)): Those F1 kart racers are the only cars that aerodynamically speaking are able to simply "fly" becasue of excessive undercarriage lift.[END QUOTE]
-What are you talking about? :rolleyes:First of all F1 and CART are 2 different types of cars..Second of all, (FACT):Did you know that an F1 car, hypothetically, has enough down force to hold itself to the roof of a tunnel at only 120mph!! ![[Eek!]](eek.gif) ...Any car going fast enough and gets enough air under it is goin to take flight...I've seen it in Nascar, F1, Cart, Indy, and especially the LeMans cars...
[ May 16, 2003, 12:29 AM: Message edited by: Black94 5.0 ]
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-SLOWER TRAFFIC KEEP RIGHT-
Posts: 5132 | From: Bay Area, CA | Registered: Dec 2001
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Red97SVT
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Member # 2811
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The likelyhood of you taking off like an Indy car (the clip od Andretti taking fligt in testing not to long ago) Is slim to none. The biggest problem is getting light in the back end. When this happens you lose traction and can get "a bit squirrely". When this happens you disrupt the air flow over the car. With the air flow messed up you lose what down force you had. Now you have it now you don't, next thing you know your sideways and its all over. All of this happens in a split second.
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Engine: HCI forged 0.30' over N/A.
Suspension: Full Griggs by Apex.
Drive train: T-56, Auburn pro, 31 spline axles, 3.73s.
Posts: 246 | From: Manteca | Registered: May 2003
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racercosmo
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Member # 1864
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quote:
Originally posted by Black94 5.0:
((94Blackout)): Those F1 kart racers are the only cars that aerodynamically speaking are able to simply "fly" becasue of excessive undercarriage lift.[END QUOTE]
-What are you talking about? :rolleyes:First of all F1 and CART are 2 different types of cars..Second of all, (FACT):Did you know that an F1 car, hypothetically, has enough down force to hold itself to the roof of a tunnel at only 120mph!! ...Any car going fast enough and gets enough air under it is goin to take flight...I've seen it in Nascar, F1, Cart, Indy, and especially the LeMans cars...
I think he's talking about F1 Go-Karts.
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Beauty is in the eye of the beer holder
Posts: 973 | From: Marin | Registered: Sep 2002
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94Blackout
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Member # 2541
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My bad, thought F1 and Cart were the same circuit, I don't really follow that type of racing. Point is though, I was under the assumption that he was just talking about having the car "flip" up and fly like you see on those F1 and Lemans races. Those cars are the only ones that have the aerodynamics to lift off like that. Because of the amount of downforce those cars have, it takes just a little bit of air to send it airborne. I've never seen a NASCAR one do it, however I don't watch enough to catch a rare occurence like that.
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87 5.0 LX: Exploded
94 Cobra: Totalled
94 GT Vert: Rear ended
98 Charged GT: Sold
65-67 2+2 Fastback: Someday...
Posts: 704 | From: San Jose, CA | Registered: Mar 2003
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BlackNGold
CaliforniaFords.com
Moderator
Member # 655
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posted
DUDE!...I just got the new July issue of 5.0 Mustang and Super Fords!!....
Its got a 622rwhp T-Trim Vortech Supercharged 4v 4.6 in a Mystic Cobra that can run 200mph!!!....Its actually going for a 90mile 200mph average!!!!.....The ONLY aerodynamics mods are that it has is a huge rear spoiler and a fiberglass hood....
Thought you guys might be interested.....
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-SLOWER TRAFFIC KEEP RIGHT-
Posts: 5132 | From: Bay Area, CA | Registered: Dec 2001
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92coupe
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Member # 1957
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i dont know abotu fliping, but getting sideways would make me nervous. ive gone 157mph in my stock body 92 lx with out any problems. that car was also stock minus an off road h-pipe so i bet he could hit 175mph easily.
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94-GT BLOWN & STROKED
Posts: 1209 | From: antioch | Registered: Oct 2002
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Primer GR40
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Member # 476
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posted
quote:
Originally posted by Black94 5.0:
DUDE!...I just got the new July issue of 5.0 Mustang and Super Fords!!....
Its got a 622rwhp T-Trim Vortech Supercharged 4v 4.6 in a Mystic Cobra that can run 200mph!!!....Its actually going for a 90mile 200mph average!!!!.....The ONLY aerodynamics mods are that it has is a huge rear spoiler and a fiberglass hood....
Thought you guys might be interested.....
Damn I got to pick that up. 200mph is my goal, but I dont know if Ill see it anytime soon. Sounds like I need a T trim too. What tranny and gears?
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Superdupercharged Cobra
No Transmatic Notch
Posts: 2108 | Registered: Sep 2001
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Tri-Bar
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Member # 2191
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The AI guy's at Cal speedway are hitting those speeds. So yes going 175mph can happen but I would say lift is not a problom. Just keep the air from under the car and use a spoiler that realy works. I have a Guney lip on my stock 90 GT spoiler and it seems to help at 135-140mph. Front of the car uses a Ranger lower air dame to keep air from under the car. It real smooth at higher speeds.
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http://68.58.185.21/Tri-BarMotorsports/index.html
Posts: 78 | From: Modesto | Registered: Dec 2002
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BlackDrop50
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Member # 1715
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quote:
Originally posted by 92coupe:
i dont know abotu fliping, but getting sideways would make me nervous. ive gone 157mph in my stock body 92 lx with out any problems. that car was also stock minus an off road h-pipe so i bet he could hit 175mph easily.
LOL you keep talking about going in 157 in a stock fox body. Yet where's the proof? What other person has gone a *VERIFIED* 157 in a STOCK 5.0, much less even 150. You do know that stock speedos aren't always correct, right? You should also know that changing gears also messes it up.
Posts: 1379 | From: 510 East Bay | Registered: Aug 2002
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GOT 50
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Member # 1960
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bullshit. 157 in a stock stang. I hit 139 with bolt ons and that was about a 20 mile strech of freeway. Oo if you dont belive me i have it on video tape..
Posts: 2139 | From: SF/DALY CITY/MILLBRAE | Registered: Oct 2002
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