Solid rear brace?

[assassin10000]

E-volve Wrote:Still the 45 degrees bars are not good like this.

If you want to make it real stiff, you don't want any bending in de thin pipes you are using. Simply said, the bending stiffnes is almost 0 of this tubes you are using.

You should have made a cross (left front-right rear and mirrored), so you will use the pipes pure as normal force beam. Then you will get the most strength out of you're frame, then its really braced.
Like in the rear of most rollcages, for example

Not to piss you off or something, at least the welds are looking nice

No worries I like discussion. We could have made a full trapezoid shape (the arms aren't at 90 degrees from the main bar) and put a true cross bar/pattern in. I don't disagree that we can make an even stronger design, but this bar is built with some compromises for keeping the spare tire well functional. While still improving on the other design.

Andrew