Wierd aero stuff

[ProStreet R/T]

That cars looks so wrong. I hope that is a fiberglass front so he didnt ruin stock fenders. I know our cars are not aero friendly but didnt Big Red do over 200mph with basicly stock bodywork.

Andrew Petty

Yeah he did... it's amazing what eleventy billion HP will do Relatively, 200mph isn't THAT hard.. 220 gets mighty tough tho. Get that sucker down in the weeds, nice belly pan and a mild spoiler... insert 700rwhp of your choice and 200mph is no prob.

[Damn True]

That cars looks so wrong. I hope that is a fiberglass front so he didnt ruin stock fenders. I know our cars are not aero friendly but didnt Big Red do over 200mph with basicly stock bodywork.

Andrew Petty

I hear what you are saying, but you have to consider that it's just a very different style. Northern Europe is heavy into the touring car racing and clearly that influenced this guys build.

Yes, Big Red went 200 with stock bodywork.....channeled over a tube chassis so it is REALLY low. But with well over 800hp and the right gears you can push almost anything over a deuce. As ProStreet said, 220 would be muuuuuch harder. The influence of Parasitic Drag and Frontal Area increases exponentially, not linearly as speed increases. It takes over four times as much hp to go 200mph as it does 100mph.

The challenge would be to build a streetable car that would go as fast. That would take some serious effort in the areo department.

[vanzuuk1]

Like buzz said the grey car is too tall in the valance and spoiler area.Looks like jay lenos chin.

[69Nova]

So that car is from Europe, are there any more pics of it. It might provide some new and diffrent ideas.

Andrew Petty

[indyjps]

there was a site it came from posted a while back, i believe sweden or norway. from the build shots of the rear, it looks like its all metal, i cant remember if it showed the fromt being fabbed. i personally dont care for the look but the metal fab is very good, i agree that front end would last one trip down the road where i live.

[boodlefoof]

The challenge would be to build a streetable car that would go as fast. That would take some serious effort in the areo department.

That is what I'm trying to do with my Datsun 240-Z project. A car that could perform daily driving duties, but can then go and break 200mph! )I know, I know... ) I'm considering aerodynamics as I custom form the body... but of course, I have no wind tunnel or any hard numbers to back up what I am doing.

[harshman]

I was picking the mind of a second gen camaro owner who drives the Silver State Classic about this very thing. He said to fabricate a piece of sheeting under the front end from the bumper/valance, past the cross-member, to the oil pan so as to lessen the amount of air flowing in the engine compartment. He also said that he has found that the lower your car is the more HP is freed up. This was his experience in his car.

[paul67]

What about Nascars don't they go into the 200 bracket and they don't have wild front spoilers or wings.
paul67

[MrQuick]

What about Nascars don't they go into the 200 bracket and they don't have wild front spoilers or wings.

Thats by design,it would not take too much to have one go 200+. Add a splitter, remove the roof dam and cut the angle down in the rear will do it. Their spoilers help slow and increase bite in high banked turns at the same time.
Now you comparing two different cars. Nascar slowed them down for safety reasons, theres no spectators (some but not surounding the entire track) to kill if an open road car get out of control.

[CoryM]

No camaros but some interesting info here:
http://www.mulsannescorner.com/
Lots of pictures which is my style of learning.

From what I gather there are a few relatively easy things to do before going hog wild. Front belly pan from spoiler to firewall, block off grille and use a smaller radiator opening (2nd gens lower grilles work great for that), duct the exhaust side of radiator to outside of car in a low pressure area, wheel well vents to side of car or top of fenders. Slightly raked stance and a SIMPLE chin spoiler thats cheap enough you can afford to destroy it on a bump. At our speeds you dont need anything fancy, no strakes or lips, just something to push the air to the outside of the car.
Just remember if you put a belly pan on you MUST correctly exhaust the radiator and have the grill blocked off or vents. Other wise you will blow your hood off
I am no aerodynamic expert (is anyone?) but those things seem to work well on sports cars with relatively little work/cost.
Just dont forget about bumps.... you need enough wheel travel to handle bumps so dont slam the car and think its gonna be faster in the corners. The great balancing act of building cars.

[vanzuuk1]

O.K., this is a mock up, I may start from scratch and do another one. It is not designed to be 100 percent efficient, I had to make some compromises to keep from having the struts go to the tail light area. I am still kind of designing it in my head.

[Damn True]

What about Nascars don't they go into the 200 bracket and they don't have wild front spoilers or wings.
paul67

They have an air dam that is about 3" off the ground static, and much lower at speed. 750-800hp (on tracks other than daytona and talladega) helps a lot. They hit a deuce at the end of the back straight at atlanta and the front straight at pocono.

[Damn True]

Cory, good stuff.

Zuuk,
Any idea what the surface area of that thing is in comparison to the stock spoiler?

[Damn True]

Holy smokes!

This thing has done a 1:38 at Road Atlanta.

[vanzuuk1]

is that a mustang?

[Damn True]

It was. Now it's some sort of freakish refugee from a secret CIA lab.



Wierd lookin thing eh?

[Rick Dorion]

O.K., this is a mock up, I may start from scratch and do another one. It is not designed to be 100 percent efficient, I had to make some compromises to keep from having the struts go to the tail light area. I am still kind of designing it in my head.

Dirk - what thickness of aluminum are you using? Also how do you cut/fabricate it? I bought some .040 sheet from Spruce Aircraft.

[69Nova]

Dirk why doesnt your spoiler extend all the way across your car?

Andrew Petty

[Damn True]

Some ECTA cars

[Ralph LoGrasso]

Some ECTA cars

These are cars that run down in Maxton, NC, right? I think ECTA runs at Maxton?