Hi, i'm considering a GT wing but I am curious how much one actually gives in downforce. from searches here, i've found some info that at about 100mph, about 90lbs of positive lift is generated so how much negative lift does a GT wing give?

anyone with any hard data on this?

 

I'm running the buddy club GT wing at it's most aggressive angle which on our trunks still isn't impressive. However, I won't drive without it now since I've done lots of weight reduction and a lot has come out of the back (tools, spare tires and such). Now I can tell the difference pretty well without my wing and considerate a near safety requirement for driving at high speeds.

So to answer your question, I've heard a lot of stories but I think somewhere around 200lbs of downforce at 90mph is what im making. But I'm sure others will let you know what they get.

You might check the racing section for tips on how to setup wings. I think it's in the FAQ.

 

Thanks for your sharing. Just wondering, how did you manage to measure 200lbs of downforce?

Would it be right to calculate thate standard bumpers lift about 90lbs at 100mph and u've removed about 30lbs from the boot so thats 120lbs in total which cancels out some of the 200lbs resulting in a net 80lbs download on the rear tyres?

In ur opinion, do u think the height of the weight does impact CG in any way?

 

A full height wing will generate more downforce than a lower one.

I believe arp has some technical windtunnel tests of their models, there is a topic somewere with some actual data of the generated downforce at specific speeds.

 

You can always get the CR wing! That one's tested

 

I have the CR wing & I begin to feel the stability at higher speeds 80+

 

has anyone with an aftermarket spoiler experience trunk deformation because of the downforce?

 

Any wing thats mounted properly at the ends should not experience any extreme flexing

 

I would like to make a very important note for this thread. on referring to Voltex type 3 wing (=j's type 2 wing), it was mentioned that at speeds >230kmh this wing was at risk of delivering too much downforce.

i am obviously quite concerned as its clear that the wing selection is not quite as transparent as i thought.

any folks with thoughts on this finding?

 

I'm sorry, I really don't understand what you are asking. I can't tell if it is because of a language issue or if it is because you don't understand aerodynamics.

I can recommend a good book: Competition Car Aerodynamics by Simon McBeath.

http://www.amazon.com/Competition-Car-Aero...k/dp/1844252302