Circle track spoiler for drifting?

[brainycheddar]

I'm running in Nor Cal's Pro-Am Drifting series, and speeds are getting higher. The car is starting to lose it's stability. Problem is that the Entry speeds are approaching 70-75 mph, and can be as slow as 20-30 in some parts. I figure it's time to add some aerodynamic grip. Problem is finding an affordable yet effective wings. I think I found a haven in circle track replacement parts, they are cheap and aren't designed for looks.

Long story short, who would shoot me if I put one of these guys on the rear deck of my car? Would you think they would be effective between 50-90mph? I figure that the dirt guys use them for a reason, so why don't I?

Link:

http://pitstopusa.com/i-5061526-five-star-1981-88-monte-carlo-080-aluminum-2-piece-spoiler-70s.html

or maybe a Car Of Tomorrow wing?

https://www.circletracksupply.com/cot-wing.html

-Cheers!

[Herr Faust Schinken]

Just do something like kman did



I don't know how well it works you can ask him

[CHIF8008]

unless you have a wind tunnel that you wanna put your car in -so that you can tune the wing... you may not end up helping yourself

AERO is highly useful in the proper locations and when properly tuned.

i know a guy, dan gurney, from All American Racers that has a wind tunnel that they use to make their carbon fiber kits and wings. maybe you could make an appointment to use the tunnel? They are located in Santa Ana, CA

[Jaxx_]

Helped high speed sections on autox. It's roughly top of second gear, or 60mph. It does feel more planted in the rear, instead of sliding around from quick direction changes. I would assume this would translated to drifting as the turn in style you use would be pretty similar no matter what the speed.

If you are on a budget there is no need for a wind tunnel. Check out using pieces of tape and yarn to look at air flow characteristics.

[AndrewBird]

I'm very skeptical that either of these provide any amount of downforce. Not due to the shape or size, but due to mounting. If it isn't mounted solidly, all it is going to do is flex and not distribute the "weight" of the downforce into the car.

If you look at the circle track one, it has a bent flange all the way along the bottom. This would make it quite rigid and give it something solid to mount it.

[camip]

How about the fake m3 spoilers and make a giant plexy glass gurney flap.

[ForcedFirebird]

If you can bend the wing down bare handed and the wing bends before the suspension does, you aren't helping anything - no matter what the butt dyno says.

[brainycheddar]

Thanks for the input guys! I was looking at the M3/gurney flap option, but then I discovered a research paper that showed that if the flap is 5% or more of the chord length, some funny things start happening between the ratio of coefficient of lift and coefficient of drag, also a pitching moment is incurred. Another consideration is that once in drift, the air going past the wing/spoiler isn't perpendicular anymore, so the chord length increases to some degree, in essence decreasing the effect of the wing. I had the thought that I could put some vertical stays on there like the 2006 Subaru WRC car had.

[img] http://en.subaruclub.cz/graphics/gal...-prototype.jpg [/img]

Idea being that the stays would force air past the wing as perpendicularly as possible.