choosing roll cages

[Wally]

Well, I don't intend to

Nah, this is a 'bolt-in' cage. The parts that it consists of can be carried through the doors. Welded-in cages can even only be installed with the body in place, like all other cars that not even have that option like 'we' do with our chassis and body as two seperate parts.

[oasis]

works for me

[evilC]

Originally Posted by Wally

Well, I don't intend to

.............. like all other cars that not even have that option like 'we' do with our chassis and body as two seperate parts.

I don't think you could intall a fully welded cage in a beetle in either the body top half or the chassis without doing a lot of final welding with everything bolted together. The back struts to the rear arches would be the first immediate problem. Despite the awkward welding with a cage insitu it does allow a much tighter fit. You can see why on competition cars the cages often go into a bare shell first with everything following after.

The Heigo cage does raise a few questions about the number of pin joints its got although I can see that for ease of installation in a fitted out car there really isn't much choice.

Clive

[Wally]

Originally Posted by evilC

The Heigo cage does raise a few questions about the number of pin joints its got ....
Clive

It does have FIA approval according to their site if the door bars are installed, for what its worth...
Personally I will go that direction.

[evilC]

Originally Posted by Wally

It does have FIA approval according to their site if the door bars are installed, for what its worth...
Personally I will go that direction.

I don't doubt the approval and I can see how attractive it is (both in itself and for your installation). My comment was really a generality that if you can weld the joints you will have a cage that is very rigid (and strong), which can also contribute significantly to stiffness of the car.

Having said that I do appreciate that you can design a full space frame structure based on pin joints.

Clive