Vacuum bagging is basic stuff guys. Harbor freight has pumps as well as all the composite store. The bag is just thin film material that is uber cheap. You just need a $15 bulk head fitting to connect the hose.

I got all the Vacuum bagging stuff from the guys at AVT along with the carbon and resin.

 

Thanks


I have everything already... just had a pump someone sold me said it was from a refrigderator and it broke! LOL

 

Got the foam core today. Might give this a go this weekend.

Fresh from the box, compared to my aluminum end plate part.



Top and bottom of the foam core, which will be like a sandwich around the aluminum frame, wrapped in a carbon burrito.... sounds tasty.

 

Nice looking core. Good luck with the fab, and clean up those end plates!

 

Got all the holes except the large 1" diameter one drilled through the support plates. just need to go buy a 1" drill bit....

 

Yeah I picked it up through Harbor, Cheap tools but the warranty is awesome ! The wing is coming together awesome man ! I really do recommend the chassis mount through the trunk for the best results.

 

I'm not ready to cut up my trunk and steal all my valuable space inside. I pretty much fill the trunk when I go to the track, and I like to be able to open it quickly to turn the Accusump valve. I'll be coupling the trunk to the chassis a little better than it currently is.

 

I worked on the wing last night and today. I got the internal frame welded together, the uprights nearly finished, and the mounting bases all tacked together. I'll finish things sometime later because I plan on working on the diffuser tomorrow.

The completed internal structure welded together.



Lining everything up, measuring adjusting etc. This took forever.



Close up of the foam core sandwich. I'm going to use this small section as my "learning" part and practice the layup of the carbon, and vacuum bagging on this guy before I do the entire wing.



I rounded the leading and trailing edge of the uprights.



I put some painters tape and paper endplates on to admire my work before it was bedtime...

 

Nice!
What are you using for a resin trap... for the vacuum bagging?

 

looks good, Beyond impressive!

 

How much weight is in the frame?

 

it almost looks like you have a postive angle of attack on that wing... ? even if it is laying flat you should still give it some AoA. it makes a huge difference in downforce as long as it is not stalling.

 

Airflow over the back of the EVO is between 9-11 degrees. So a wing level to the horizon will see those angles of attack.





This airfoil stalls around 13 degrees, so it won't be running much angle relative to the horizon. But it has really good numbers in terms of coefficient of lift, so it doesn't need large angles.

Plots of CL and CD.



Crunching lift and drag based off CL, using the dimensions of the wing which is 65" with a 12" cord.



I really hate looking at the bases, they are ugly. I plan on machining out the uprights. I'm not sure I like the position of the wing either - based on the angle of the uprights. I thought I wanted the wing a little closer to the rear window, which is how it is. But I may re-make the uprights to have more rearward angle and place the wing further back. We'll see. Uprights are easy, I have 2 full sheets of the material I could build boat loads of them.

 

Kevin is right, assuming you're not top speed limited on the tracks you go to, you will see performance increases well past the stall angle of the center of the wing. I'd guess peak "down force" numbers would come somewhere near where the outboard parts of the wing stall. The drag will be very high though and could affect your top speed.

 

Dang, thats crazy good work. Props on the fab