Thank you for all your comments.
I race this prototype today and it did behave well.
A few crash's din't break it, nor cracked.
You're right tom3012, it need some work to become a more usable part, as the finishing is far from acceptable.
At list tow aspects are to be improved right away, the carbon board and de edges (incluind holes for wing posts)
I made the carbon board at home and tried for the first time kevlar, that showed to be much too hard to work (specially the finishing and hole drilling), the other aspect is that it was too thin so a used two of them glowed together, and became too thick.
I have to work on the mold to get a good board one first time. with the right thikness (about 5 mm, or maybe 4mm can hold on - any sugestions)
Concerning the shapping, if I use only carbon fiber, it will get much easier to cut, and with the prototype in my hand I can now correct the measurments including the post's hole (harder to preview).
Round edged will certainly give it a better look and prevent damaging other's cars.
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