Roll Cage W/O Passenger Side Door Bar (Page 1 of 2)

Yes it will fail.  That isn't a cage.  Check out 3.1.2  A cage has door bars.

But in my mind it just doesn't look 'right' without at least one on the pass. side.  As Rob said it's so easy to put at least one in ....

And it'll assist with the load path for energy dissipation during a bad day.

I suspect this is another one of those sneaky rules misses and any cage without at least one door bar (even though it isn't in the rules) would fail tech.

I'm pretty sure that the prior version of the rules required at least one door bar on each side and so I wonder if that didn't get mistakenly removed when the revision for two driver's side bars got inserted. It's not redlined that way, but I just seem to remember it.

We most likely will add a bar to the passenger side, but the cage builder, my younger brother, built the cage to satisfy all the stated requirements and no more.

The main reason I posted here was to be sure we didn't get screwed on tech day by the "catch all" phrase "Professionally made full roll cage required". I could see the judges saying:

Full front and rear hoop, appropriately braced to each other along the roofline; Check
two driver-side door bars (X-design is acceptable); Check
appropriate main-hoop backstays with no bends, located as close to 45 degrees from horizontal as practical; Check
one main-hoop diagonal; Check
appropriate spreader plates and gussets; Check
complete 360-degree welds at all joints. Check
Each major load-bearing member must be formed from its own single, continuous tube. Check
Shoulder-harness bars strongly encouraged, and virtually necessary for proper shoulder-harness mounting in some applications (the attachment point of all shoulder harnesses must be between zero and 15 degrees lower than the seat entry point); Check

......What the hell, no bar on the passenger door? Failed

Ours has one diagonal passenger door bar. 5 races and never had a problem in tech about the cage.

I would contact Lemons HQ for a clarification.

I believe that both the coROLLa and the Craptation ran their first races without passenger door bars.  They'll let it through.  Note that both of those cars now have both door and dash bars.

But put it in diagonally....

Those dual driver's door bars may comply with the letter of the rules, but I don't think that they quite meet the spirit of the rules.

If you could add a swing out bar right at the sill of the door you can add lots of side impact protection with ease of entry...If it's hinged at the front, and the rear fits into a solidly welded "pocket" with a stout clevis for retention you could add it pretty easily...maybe without bends either. Don't know if the Men in Black would approve of a swing-out as a supplementary bar over the required two....has anvbody tried this?

Your right, but unfortunately, it is not the same tech inspector for every track, or even different races at the same track. It is whatever the tech inspector says, on that day. If one wants a passenger door bar and a full length harness bar, at 4PM friday, he would be boned. He would have to scramble to get material and weld it in.

Tech just can't make up rules as they go along.  Unless there are other problems with a cage, they can't just make you add bars that are not mandated by the rules.