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I found the ITE rules at NESCCA. (SPO doesn't seem to fit me: it's basically a class for retired pro race cars.)

"...the ITE rules and guidelines are that ALL VEHICLES MUST:

- Meet (at...

Regardless of which IT category I run, I believe the car has to weigh less than 2700 pounds for me to run the cage I have. Correction: it must have a "GCR weight" of less than 2700 pounds.
...

Well, it's a done deal. The CS is not letting me run the car in ITS even for the driver school coming up this month. Unless I can scrounge up a fuel cell and fire system in short order (to make it...

Thanks Greg. I was just quoting the formula rules for the sake of comparison. I guess it's apples and oranges though, so not relevant to my situation.

Holy crap, the formula/sports racer cage specs say:

c. For purposes of determining tubing sizes, the vehicle weight is as raced without fuel and driver. The minus tolerance for wall thickness...

Can you point me to the relevant section in the GCR that confirms your statement?

This is an interesting point because, first, I see this:

9.3.48. WEIGHT
All cars shall meet or exceed the...

If you look at the June update of the 2008 GCR, rule 9.4.F.2:

Up to 1700 lbs 1.375 x .080
1701 - 2699 lbs 1.500 x .095, 1.625 x .080
2700 lbs and up 1.750 x .095, 1.625 x .120

Note that the...

Thanks, Josh.

Doesn't make too much sense, though. They still allow two different dimensions for 2700 lbs and up. And if you refer to 9.4.5.E, you'll see that formula cars and sports racers...

I had a cage built for my car this year. My intent was to have a cage that complied with ITS, SpecE30, and KP classes (SCCA, NASA, BMWCCA, respectively). Unfortunately (or fortunately, as it may...

This may be a naive point, but does everyone here expect that it is possible to build a cage that can protect an occupant from a high speed side collision?

Isn't the primary purpose of a roll cage...

You mean Bertil Roos? Google it. First link.

The web site is racenow.com. Sorry I can't post links.

I'd like to springboard off that introduction by welcoming you and introducing myself! I'm also an E30 driver aiming for ITS.

I started out as a flagger and pit worker for SCCA. Did that for a...