So I got my Voltex GT Wing today. Obviously it has numerous mounting positions (high, low, angled, flat) for the wing. The question is is there a standard way to setup a GT wing is or dependent on what your trying to achieve?

Couldn't find anything here or online about setup or theory.

 

the higher up the cleaner the air passing over the wing. clean air will give better downforce (and more drag). ideally you want the wing very high, and set farther back if possible. rules generally restrict how high up the wing is allowed to be, same for how far back. the mounting of the wing needs to be pretty stout if you make it very high and far to the back.

as for angle of attack, the wing will stall if its angled to far down. the maker of the wing should provide some downforce numbers at different AOA's. generally speaking you'll want to be running a decent amount of angle to create the most downforce (around 7* is a good starting point) . some people have made an attempt at figuring out what angle the air comes off the back glass onto the wing. so if the wing sits low, the air will be coming down at an angle. if you mount it higher up, the air flowing over the wing generally will be parallel to the ground so you can tilt the wing down more.

one last thing, some of these wings can make a lot of downforce, and a high mounting position with good AOA will generate far more downforce then the car was balanced for. you'll find that to much downforce and the car will push in turns. without making an attempt at balancing the downforce with the front of the car, you can actually hurt the handling of the car. (add more up front, and you can add more in the rear too without upsetting things to much)

 

Thanks Kevin. I'm sure there is something that came with the Voltex wing, but unfortunately I don't speak Japanese. Perhaps someone with insight into Voltex wings could shed some light on the subject.

 

As Kevin mentions, the best thing to do is play around with it this spring at a test-n-tune at BR. Not sure what you were thinking of for a front splitter/canards/etc. but it once you have the front figured out, then you can balance wing downforce.

You won't be able to mount the wing above the roof line iir the NASA rules correctly and stay in TTS

Eric at Driveline might be able to give you some starting tips.

 

Thanks Patrick. Since I didn't go with the 30mm extensions, I'm pretty sure that I'm below the roof line with the wing at it's highest position. Haven't given too much thought about the front splitter yet. Perhaps you have a few suggestions that you are using. Just trying to get everything tied up before April. Seems like a long time away but it'll be here before we know it.

Definitely need to get to the early TnT nights. With adding a lot to the car, gotta find out how it handles.

 

That little metal bracket you're referring to is a 'stopper' that holds the trunk back a few inches so the wing doesn't hit the rear window every time you open your trunk.

 

Thank eric. Yeah, I was careful on opening the trunk to make sure it didn't hit anything. Without the 30mm risers, it's far enough away from the roof/rear window. Plus with the weight, the trunk doesn't fly open on it's own.

As Kevin said, is there anything from Voltex that provide any hard #s regarding down force based on different heights/positions of the wing?

 

They only have the vague spreadsheets from a few years back. If anything better surfaces, I'll be running to post it up .

 

thanks

 

APR has hard numbers for all of their wings. you could prolly use it as a good reference point.

 

Here is a table from Fulcrum Aeroworks. They built a wing and splitter for my racecar, great stuff and much better quality than APR and very affordable. These numbers are based on their 71", 14" chord wing. www.fulcrumaero.com

 

Watch how the wind tunnel tested the Voltex Evo 9 wearing the Voltex wing. I just dont know the exact angle of the wing and I dont know if they gave the numbers but after they angled it more, the wing provided more downforce as shown on the scales.

 

I may give them a call to make some custom base mounts for my wing thanks!!!

 

Where did you see this at? Wouldn't mind checking it out.