Quote Originally Posted by Mitchell View Post
This rule is fairly poorly written but from what I can see your frame is fine.

There is no good clarification of "front hoop bracing" vs "front bulkhead support structure". I submitted a rule clarification a year or so ago and confirmed that the minimum required structure between the front bulkhead and front hoop is 3 members - an upper consisting of 1.6mm wall, a lower of 1.25mm wall and a triangulation member of 1.25mm wall. Now obviously this would leave your side impact structure/front hoop node unsupported so is unrealistic but it is handy to know.

I should also add that your lower member could be 1.25 and your upper (behind the front hoop) could be whatever thickness you like.

Hope this helps.
The difference between "front hoop bracing" and "front bulkhead support" is that "front bulkhead support" must be 1.25mm wall, 3 members back to the front hoop. "Front hoop bracing" on the other hand is only 1 member and must be 1.6mm wall, and should extend to the bulkhead, but doesn't necessarily have to.

So as I understand the OP's frame is fine. But see the two members going forward from top of the front hoop? They could make the uppermost one .049 and the one just below it 0.065 and be fine as well.

Anyway OP, your frame looks fine in this view op and is a fairly standard way of solving the FSAE problem.