choosing roll cages

[Wally]

Originally Posted by owdlvr

Sweet, thanks!

So I guess I just need to figure out if "011: Cross-bar in main hoop" is what we would call a Harness Bar over here (horizontal bar through the main hoop.

-Dave

Diagonal is NOT horizontal... so no need finding out: it isn't!
I don't know where you got these numbers and text from, maybe that will explain more.
If its from Heigo, just look at their pictures that go with that text and it will explain most all I think. Again, if its from Heigo, they don't use a specific harness-bar in their standard cage set-ups.
Did you look at my pics yet?

[owdlvr]

Originally Posted by Wally

Diagonal is NOT horizontal... so no need finding out: it isn't!
I don't know where you got these numbers and text from, maybe that will explain more.
If its from Heigo, just look at their pictures that go with that text and it will explain most all I think. Again, if its from Heigo, they don't use a specific harness-bar in their standard cage set-ups.
Did you look at my pics yet?

Numbers and text have all been pulled from the Heigo webpage. That's the first time you've called it a diagonal though, "cross-bar" could be anything!

I have looked at your cage, and the Heigo website, and you don't have what I would call a Horizontal Harness bar:



It doesn't look like that's an option from Heigo, so I would either need to weld one in, or perhaps just do something local to this side of the pond. It looks like my Audi Rally car is going to get stripped and crushed, so I'm considering turning my '69 Beetle in to a Targa Rally car. But if I do that, I want a horizontal bar in the main hoop.

Thanks for your help!

-Dave

[Wally]

Originally Posted by owdlvr

I have looked at your cage, and the Heigo website, and you don't have what I would call a Horizontal Harness bar:

It doesn't look like that's an option from Heigo,

Your absolutely correct!
I noticed this too and have decided to weld-in those two pieces myself lateron
The heigo cage fits so extremely well and close to the door pillars, that I will probably also just weld A- and B-pillar to the main hoops just for rigidity reasons.

[evilC]

Hi Dave,
Do you need the horizontal bar? The belts could just as effectively be located to fixings directly to the rear shelf. I am not overly impressed with the location of belts on the horizontal bar as it imparts a huge bending moment into the bar (the load would be ~6g for two 100kg bodies i.e. around 1.2T!) and the fixings on the main hoop. I realise that a number of competition cars have it and I can understand the theory where the only other fixing is on the rear seat deck that makes the belts overly long and operating at an angle. If I were choosing the ultimate cage for a bug I would still go for the rear deck fixing for the belts and then use a complete cross brace on the main hoop. No matter what I would still add multipoint fixings as Wally suggests to the cage so that the cage and bodyshell become a complete integral structure.

Clive