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Evo GeneralDiscuss any generalized technical Evo related topics that may not fit into the other forums.
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Nice pics & thanks. I understand better how the wing was constructed. If you want, you can make a new thread to support this tear down & re-construction? Its up to you or i will change the title to this thread so it can be found in a search
Thanks, Joe
Will do, once I have materials sorted out I'll get the gurney too if it looks cool
btw did your hood get damaged at the mounting points?
hmm trying to figure out if stopping the verticals from leaning inwards would do the trick. Some joint would have flexed/cracked for it to bend no?
Thats a good question whether the verts leaned in but what i still have a hard time understanding is how the wing dented the trunk? It must have snapped w/such a force to dent the metal trunk. And the horizontal wing didnt fail in the exact middle. It failed just a bit offset to the passenger side.
Thats a good question whether the verts leaned in but what i still have a hard time understanding is how the wing dented the trunk? It must have snapped w/such a force to dent the metal trunk. And the horizontal wing didnt fail in the exact middle. It failed just a bit offset to the passenger side.
not at the middle just means thats the weakest part of the resin/CF work i think. I would have expected it to break at the bolts since that area can wear fast, especially from rust/water retention. I got cocoon type webbings and small leaves in there so a good amount of moisture is going inside as well
here's how I separated the verticals. Use 1 first, then 2 wedges that would apply the lift. Use the heatgun and blow thru the bottom and a little bit on the seams (if you can see the adhesive). with the wedges you will hear the velcro separate as the adhesive softens and stretches. move the wedges inwards as the gap increases. you can use a 3rd tool to cut the soft adhesive or to add lift. You can also separate/wedge between the velcro strips once theyre accessible
Buckling - Once the wing starts to bend the section changes and it weakens at an exponential rate ^3 power of dimension change. I am guessing here but I think the pour in expanding foam will help more than the rods. Since it will contact upper and lower faces of the wing and is many times as stiff as air. Also no foam in the 9 and 8 has foam no problems. Foam will prevent buckling failure ie you can hang a car from a 2x4 but you can't set one on a 2x4 due to bucking.
Originally Posted by MinusPrevious
Yep, your wing should be the hollow vs the foamed 8 wing. But for street use, you will never have that issue of overload
Heres was my damage (it snapped so hard, it dented my sweet black trunk as well)
Buckling - Once the wing starts to bend the section changes and it weakens at an exponential rate ^3 power of dimension change. I am guessing here but I think the pour in expanding foam will help more than the rods. Since it will contact upper and lower faces of the wing and is many times as stiff as air. Also no foam in the 9 and 8 has foam no problems. Foam will prevent buckling failure ie you can hang a car from a 2x4 but you can't set one on a 2x4 due to bucking.
I agree but IMO if a rectangle changes to 2 triangles, something else(angles) changed because CF would not have stretched so it would have bent at the bolts, or the verticals leaned inwards which suggests it doesn't have a good footing. 1) The rods adds to the strength at the CF-to-bracket bolts and middle section of the CF. 2) I am not confident I can 100% fill the empty space with expanding foam, or if the inside surface will adhere. 3) High density foam is heavy, I'm not sure which one is right. I'm thinking 'big gap filler' so its less concentrated. Anyway additional solid surface provided by the rods would help in the function of the foam
It's mostly an over reaction to the pic provided by MinusPrevious