More downforce less drag

[kach22i]

If you go to the roof wing link in my signature you can see where I theorize about the function of an air gap and the affect on air flow.

If you do an all flush (no air gap) roof wing and side pillar, maybe test in both configurations in the name of science.

Gaps between body panels and doors could be taped up as they do at Bonneville.

Aerodynamics by George Kachadoorian | Photobucket

[pgfpro]

Cool truck!!!!

I don't have to much to contribute about down force and aerodynamics, I will leave that to our local experts. With that said I think your going to have issues no matter how much down force you have have on a no-prep track with the power your making. On my my car running around on the street running with my QTP Hoosier's it will spin the tires and move around on me and my car is only a mid 9 second street car. I have two friends that have the fastest AWD Talons in the world both in the 7's at 180+ and there is no way they can hook on a no-prep track.

I also think your 60' is what is hurting you the most. You should be at least around a 1.40 60'. Even on a AWD you have to hit the tires hard off the line and keep them planted.

[Leonel1995]

The hood is raised on the back part, the air of engine and intercooler exits there yo the windsshield, cant remove mirrors or change them, its 50%rear 50%front all time traction
Pgfpro: the real problem is the track, se hace tested all kind of launch, but the 1/4 mile track we have is old and even worst at the first + - 30mts theres even sometimes oil on it, so you can imagine, any street road have better grip

[freebeard]

I just wanted to say 'napping at the Christmas tree' because I thought it sounded funny. That was an awesome 1/8th-mile run. Is anyone at the track competitive with you or do you 'own' the place?

...cant remove mirrors or change them...

I suppose massive wings are out too then. I think it's going to come down to what is allowed, and the choice of tires for those track conditions.

[Leonel1995]

Sorry, i can change them, cant remove them, At same time i dont think it help much, cos idk if with this body air goes close to sides of car. I can add everything i want except wheelie bar. We race against the time, thats what we care about

[freebeard]

Folding the mirrors back would make much less difference than a diverter, bellypan with wheel spats and difusser.

[darcane]

Originally Posted by Leonel1995

https://youtu.be/rO8uSNzb0bQ
That vídeo is an example on a 1/8 mile track boost is controled all race, not mid track, in 1/4 mile too.
1.5 aprox without R/T (reaction time)(driver business) At 60'ft (18meters) the car starts with 30%power and reaches 90% power to the end of the track of 1/4 mile we control it to be driveable, imagine too muchas power and the car goes like soap on wet floor.
Wheight around 1100 kg at race
We do 2nd gear bournouts 4wheels smoke 60meters, pretty hot slicks, no bournout problem.

Is there any way you can dial in more anti-squat in the rear suspension? I watched this video as well as a couple older videos that youtube conveniently linked up to it. Looks like you have a lot less squat now than you used to, but it still looks like it sags and then pops up when the tires slip.

What tires do you use exactly? What tire pressure? Doesn't seem like the sidewalls give enough, but it's hard to tell with the camera angle.

[spacemanspif]

Proping up the back of the hood is a popular tuner thing to do, but my car has a cowl induction hood that is designed to pull air into the engine. I wonder how much the propped up hood helps, becuase I would think it would hurt more in the aero department.

[RedDevil]

Originally Posted by freebeard

Folding the mirrors back would make much less difference than a diverter, bellypan with wheel spats and difusser.

Less, but still some. It does not exclude the other stuff, so why not have it as well?

[gafhj]

Originally Posted by Leonel1995

Sorry, i can change them, cant remove them

But maybe you can move them?