I Do This For The Glory
Join Date: Dec 1999
Location: Nobleboro, Maine
Thanked 0 Times in 0 Posts
Re: Is this rollbar too beefy?
It appears in the pic (great drawing BTW, CAD?), that the front hoops go outward a little before the top bar, is this correct or is it an illusion? If so, the top bar will want to compress at the bends and flatten out under impact.
The tubing you're looking into using will weigh approximately 3 pounds per foot, but I don't think it's excessive at all. I would put the side braces from the stock roll bar further down though, to maximize the strength. I'd also add gussets at all the connections, made out of 1/4", so help strengthen the welds and avoid folding. 1/4" steel weighs 10.2 pounds per square foot.
I would like to add I have only built one roll cage, but have rolled and seen countless other cages "in action" so to speak. I have also never seen one fail, but all were well built. All of the rollovers were also slow speed with no more than one complete roll.
'81 CJ-8 Scrambled!
GM151/SM465/NP205 twinstick/7" Lift/33" Swampers/REP 8000/RS9000's/Scout II D44's F&R w/4.10's & Lockrights