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-   -   choosing roll cages (https://www.germanlook.net/forums/showthread.php?t=10268)

Wally February 4th 2010 18:59

Quote:

Originally Posted by owdlvr (Post 73981)
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 February 5th 2010 05:15

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

owdlvr February 5th 2010 14:52

http://farm1.static.flickr.com/50/13...52020e5914.jpg

In my rally car we braced the harness bar to the tunnel, but in my next cage the harness bar will likely go into the main hoop. I've had the opportunity to "test" the belts, and they do stretch significantly :P. Due to the length increase, I'm likely to shorten the mounting points on my next car.

Quote:

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.
I'm definitley torn on this whole thing. It's a pain to ship to Canada, but based on your photos it _does_ fit really well to the B-Pillars. I'd be looking at doing just the roll bar and want to keep it a bolt-in feature. So I need to make some choices on whether it's easier just to have the rally shop do the bug, or order a bolt-in.

-Dave


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