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Originally Posted by Goat Blower
Very simply, an 8-point gets the "halo" or D part of the cage over your head and ties to the floor in the footwell area. You're not going to need all of that though, your cage is fine. The tech is blowing sunshine up your ass.
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The "D" bars are the bars in the cage that go from the main hoop to a chassis. They are required in faster cars, because in the event of a role over, they are suspose to take 80% of the impact force and keep the main hoop from pushing the frame (or in our case plates) out from under the car. That is why inner and outer frame rails are required in some circumstances.
The Halo is what makes it a roll cage, before that its a roll bar.
From what we have been told, if brians cage is a "5 point" (with passanger side brace bar) it is good to 10.99. If its a full cage, with bars that incase the driver, and has proper D bar braces (which I doubt john did, as we just found out about this), it would be *could* good to 8.50's. Obviously stating that you have the rest of the safety equipment required. (parachute of over 150, scatter shield, sfi approved items, etc etc etc etc).
There is also a class break at 9.99 as far as rules are concerned.