Roll Cage in SP Auto-X
07-10-02, 02:36 AM
#1
W. TX chirpin Monkey
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Roll Cage in SP Auto-X
Ok guys i have a TII that i would like to install a 4 point harness. How many points in a cage can i have and still be ok for this class, without being bumped up to Prepared or Mod. I don't think a cage can take me to Mod. But just to be on the safe side i would really like some roll over protection.
07-10-02, 10:23 AM
#2
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I'm 99% sure you can run a cage in stock class, although I'm not sure of the points. You may want to ask www.sccaforums.com 
07-10-02, 11:15 AM
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My rule book is at home, so if you don't get a rules quote by tonight, I'll reply again.. But IIRC, SP allows a roll cage, 6 points,maybe more, but it has to be bolted down, not welded, IIRC.
I'll look it up tonight.
PaulC
I'll look it up tonight.
PaulC
07-10-02, 12:29 PM
#4
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the classes determine the minimum number of points. extra safty features and point are always accepted as long as the minimums are met. so if you have a 8 point cage it wont disqualify you in the classes that require fewer points.
07-11-02, 12:35 AM
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quoting from the 1999 Solo 2 rules, and I doubt the rule has changed, but as always, you should have the most current rules before adding something to your car.
13.2.G
Rollbars and roll cages may be added, it is strongly recommended that they be constructed according to Section 18 of the GCR. Roll bars may be welded, Roll CAGES must be bolted, not welded. A roll cage has more than four attachment points to the body or frame, or has bracing both fore and aft of the main hoop.
Skipping a few words, but that's the gist.
13.2.G
Rollbars and roll cages may be added, it is strongly recommended that they be constructed according to Section 18 of the GCR. Roll bars may be welded, Roll CAGES must be bolted, not welded. A roll cage has more than four attachment points to the body or frame, or has bracing both fore and aft of the main hoop.
Skipping a few words, but that's the gist.
07-14-02, 11:31 PM
#6
W. TX chirpin Monkey
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So if it just a roll bar i can go ahead and weld it in. But if it's a cage. like if it connects at the two rear strut towers and the to the roll bar then it's got to be bolted ???? I wonder why? I guess it makes the chassis that much stiffer. What about weld the bar, but the two legs, portruding back be bolted down.? Anyone?
07-15-02, 12:12 AM
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No.
Read that paragraph again. A roll cage consists of more than 4 points, OR has bracing FORE and AFT of the main hoop.
So.. The main hoop is two attachment points. The rear bracing to the strut towers is another two attachment locations.
Now, if you wanted to run a drag setup where you ran a bar along the door to end at the floor near your feet, THAT consists of a roll cage according to these rules, and must be bolted in.
Wakarimase?
PaulC
Read that paragraph again. A roll cage consists of more than 4 points, OR has bracing FORE and AFT of the main hoop.
So.. The main hoop is two attachment points. The rear bracing to the strut towers is another two attachment locations.
Now, if you wanted to run a drag setup where you ran a bar along the door to end at the floor near your feet, THAT consists of a roll cage according to these rules, and must be bolted in.
Wakarimase?
PaulC
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07-15-02, 01:59 PM
#8
Why add a roll cage for autocross, it is just extra weight. Many folks will add a single bar that goes from one shoulder harness bolt to the other. You then add an extra bolt on either side (the original shoulder belt plus one) and you are set. You have a strong anchor for the harness, without the weight of a roll bar. Now, don’t get me wrong. I think roll cages are important for road racing, but not for autocross.
