[quote=newman;956751]And he hit it at the weakest point for that type of impact.
Almost pure cross sectional loading of a cantelever/pointload (kinda) beam.
quote]
… a pretty well balanced car that may have prevented it from spinning around the tree.
A fwd is so front loaded it probably would have just spun rather than crush.
Of course this is all conjecture.
Just a matter of freak accident > cage. Min. 1.50" X .125"
The bend at the top of the A-pillar could have been reinforced with a straight bar going from the bend to the bottom of the A pillar bar. So a straight bar reinforces those two bends.
A diagonal or an X could be added to reinforce the halo bar “void”.
But then again the local pro cage builders use .035" wall and have two bends at the top of the A pillar (out of 3 total) none of which are reinforced so WTF do I know.
Still poorly designed.
People who build most rollcages are stupid anyways, they think of them as a glorified roll bar, to keep the roof from crushing in the event of a roll, not a violent flip.
A cage should be built strong enough that It cant take a car traveling the same speed your normally traveling at any part of the track, into any portion of the cage, and keep the cage off the driver.
Cliffnotes: build the cage so when you flip and a car drives into your roof, you dont end up the same height as sponge bob.