I've been researching cages lately and the different designs out there. IT specifies 8 attachment points. So, this means you can have any number of bars you want, as long as there are no more than 8 attachment points to the car. This means bars can attach to other bars that attach to the car, but just not to the same base attachment point.

I 'm trying to figure this one out. It appears from this picture that there's 4 attachments right there. If the other bars were welded to the main support bar about an inch up from the base, it'd be ok - right?


This is Paul's Civic which better illustrates my point. See how there are only two bars attached to the car, not three?


This is a Type R. The rear tower brace is attached to the car at 4 points, so providing the rest of the cage only uses 4 more main attachment points, this would essentially be considered legal - right? Also take a look at the passenger side main hoop, just behind the door window. It appears the cage bolts to the chasis where the factory seatbelt was. This is another attachment point - correct?


Is my thinking on the attachments correct? If so, this allows me a lot of freedom to design (or copy parts of other good cage designs) a cage for my car and get one built in time for this spring.
Thanks.

edit - Can't count. The Type R is not legal. The cage has at least 10 points.


[Modified by johng, 8:05 PM 12/30/2002]

 

the 7th and 8th points must extend forward from the bars folling the a-pilar to the firewall. However like the cages pictured, if they merge to an imaginary point in spaces, it counts as one attachment point (like in the first pic).

 

The attachments in the first two pics each count as one point.

The plates on my rear shock towers each have 4 bars attached to them, but only count as 1 point.

 

You mean like these two additional firewall/floor braces?




[Modified by johng, 9:39 PM 12/30/2002]

 

Those weld points are super!

The red civic is very well done...

 

Yes, those are specifically legal in the GCR and constitute the 7th and 8th points as mentioned above. I would also agree that the first pic would be a legal "single" attachment point, while the ITR's extra attachment points would not be considered legal for IT. I also agree with your assessment of being able to use as many bars as you want/need within the cage for additional bracing. Indeed, I have added a cross brace between my rear supports, a dash bar, and a petty bar as well as door bars nearly exactly as pictured above, all are expressly legal for IT. However, if I took a bar from the middle of the dash bar down to the exhaust tunnel...no good.