roll cage inspection holes

[Wirtz]

Is there a tech inspector on this forum for CMC? Per the rules it asks for 3/16 holes in the required tubes of the cage so the thickness can be verified. I'm just looking to confirm which tubes since they are not specifically listed since I don't want to drill un-needed holes.

I'm guessing this list would cover it;
Main hoop
Main diagonal
A-piller bar
Halo bar
Rear support bar

Anyone have any other thoughts?

Jeff

[mitchntx]

Drill them when asked ....

[marshall_mosty]

I'm with Mitch on this one. I discussed with Richard Pedersen years ago when I was building my car. I received the same suggestion. There is no need to unnecessarily compromise the soundness of the cage for an inspection that "may" never happen.

[y5e06]

Drill them when asked ....

Thats what I'm thinking.
At my annual tech I only had one hole and it is in the main hoop. that is it. They didn't ask for more nor measured thickness. I had an extra drill bit in the tool box just in case. Plenty of CMC/AI folks w/ drills at the events.
Of course, I'll be prepared again for the '07 annual

[oz98cobra]

One hole in the main hoop is what we plan to do with the cars we are preparing over the next couple of months - if anyone ever wants to get anal about checking the other tubes, then we can drill them when asked to.

I plan to put the hole in the main hoop down low near where it attaches to the floor plate so as to induce the least amount of weakness possible.

[Wirtz]

It's a good point. I was thinking of getting them in place before the cage is painted but makes more sense to hold off and see if they are needed at all.

Jeff