ok here is a quick pick with the carbon wing minus the old wing - i think joe is right about it suiting the 928s shape. i need to look at how i am going to mount it.

 

Hi nick, it looks like the same wing.

 

who is the 2nd yellow 928??

 

At the time it belonged to Ronn Gottshalk who works for me. It now resides in WI.

 

Gotcha............ So the socal race 928 group is mostly yourself and Joe.....

 

I would like to see how Joes wing is mounted. Also to the hatch? I wonder about the stability?

 

I use just the two mouting holes, as does anderson and it is stable as it needs to be. keep in mind 250lbs of downforce only requires around 25lbs of force due to drag . most wing mounts are totally overbuilt. (unless you want to push on the wing to move the car )



mk

 

Nick,
Watch out using that wing without a splitter to match it up front. The banana wings create a ton of downforce (banana shape is to create more surface area within a given width restriction), and you will get a serious high speed push--especially if you run at the 'ring--if you don't match it with a good splitter.

 

The NE big-wing racers discovered, IIRC, that the hatch 'lip' will flex enough that, without reinforcement of some kind, a side-to-side wing oscillation will develop when the wing is loaded.

 

i have a very efficient wing design (GT3Cup wing) that has a high lift design, and is mounted with traditional uprights on the sides mounted to the hatch. that area is very stable and extremely stiff. Ive not only measured the non existance of flex, but the downforce up to 250lbs!! (at 120mph when set at 5 degrees inclination)

side to side seems to be a issue with wings not mounted with unstable uprights or two large of end plates. I modeled mine after the cup wings.

Keep in mind, anderson has similar mounting as i do with one more mount bolt in the rear, which really isnt needed but adds some stability as he has a longer base. I use the same material and thickness as the $8000 cup car wing set up. the only differnce is that theirs mounts to the sides of the rear hatch , which is CF. (not that stiff, but stiff enough)

Also, andersons wing is larger than mine by about 25%.



Mk

 

its not a "ton" more, but it could be more. He wont be realizing it as his wing is mounted too far forward. farther back would give the wing more leverage. I went with the plane of the rear bumper, as was the rules for some series, plus it looks right. you loose a (ton) of downforce by moving aft on the chassis.

yes, the "banana" shape does create more lift based on it creating a thicker effective cord width in the curved areas of the wing. however, you do loose some of the effectivness of the end plates that are not too forward to help reduce wing tip vortecies generating in the middle area of the wing now.
more effective is its air foil design, with a built in lip that increases downforce with little drag.

mk

 

Genetics is a bitch...

 

Yep, my main point was that it will create a "ton" more downforce than his current wing which (no offense intended, Nick) looks like a ricer specialty with probably no testing whatsoever.

 

Hi Nick, here is my wing support.

 

928 race car at Road America