I have been looking for a functional roll bar for a while, but unable to find one that is in my price range (£600 max). So have been thinking how to fabricate one that will provide a good degree of protection. The outboard fixings are my main concern. Initial thoughts are to fix the bar to plates under the 2 rear fixing bolts of each seat, at least the inner bolts would attach to the chassis and the seats themselves would be tightly coupled with the bar. A V brace into the hood storage area, bolted into the chassis spine would hopefully provide good support. So something like the pics attached.
I was considering if some fixing into the sill, using the seatbelt anchor bolts, would be sensible, but that does complicate things and may not be of much benefit or may be positively wrong.
Once I have more confidence in the scheme, over the winter I plan to firm up on the dimensions and angles, investigate where the chassis is under the hood storage area, determine how much fibreglass needs to be cut out to make that chassis connection, then make a mock-up from plastic waste pipe to see if the folding hood can clear it.
Anyone have comments on the scheme ? Is this a waste of time? Could it be a safety hazard? How could it be improved?