roll cage strength
 

Hey just wondering if anyone ever tries do add strength to their cage and if so what are you doing to it?

Posted via Mobile Device

Re: roll cage strength
 

You are kidding, right? If it concerns you, I'd get rid of it, and if it's that bad, cut it up so no one else will try to use it. JMHO! Bob

Re: roll cage strength
 

Hold on Bob. If he's talking about before he welds it together, he's got a good question. Wall thickness, tube diameter, and design, all good questions.

BUT, if it's after it's all put together, I agree 100% with your answer. Once you build it, you can't fix it.

You can cut and modify alot more than most people think. If the issue is to short a cage for the driver then but another car with taller cage.

Bob

Posted via Mobile Device

Re: roll cage strength
 

If you want a video that might help you see where you need more strenght. Or better yet find the info from the test.

You Tube Video

Re: roll cage strength
 

Originally Posted by racen857:
If you want a video that might help you see where you need more strenght. Or better yet find the info from the test.

http://www.youtube.com/watch?v=WOsoNGwDTcg

We had a racer do that last test in a TQ Midget a couple of weeks ago at Charlestown Speedway. The results came out about the same.

Honest Dad himself:6::6:

Re: roll cage strength
 

I personally wouldn't put a whole lot of credence in that video/test, it may have a lot of scientific conclusions, but that is a sold concrete barrier, and a head on hit, that might be considered an extreme case, but the bottom to top is in my opinion, totally bogus, and truthfully, a waste of at least two chassis. I know, it can happen, but your chances are better on the track, than sometimes off the track. JMHO! Bob

Re: roll cage strength
 

Originally Posted by TQ29m:
I personally wouldn't put a whole lot of credence in that video/test, it may have a lot of scientific conclusions, but that is a sold concrete barrier, and a head on hit, that might be considered an extreme case, but the bottom to top is in my opinion, totally bogus, and truthfully, a waste of at least two chassis. I know, it can happen, but your chances are better on the track, than sometimes off the track. JMHO! Bob

As far as the "whole lot of credence" ask Shane Hmiel about the second crash test scenario. He might have something to say about testing cars at that point of impact to try and learn about the strenght of the chassis in that area.

Re: roll cage strength
 

THAT needs to remove those giant lego bricks and give some kind of run off area like Bloomington has. Both ends of the the track have available space to allow this. I was there sitting in turn 4 when Shane crashed, and I hope to never see anything like that again.

Re: roll cage strength
 

Originally Posted by racen857:
As far as the "whole lot of credence" ask Shane Hmiel about the second crash test scenario. He might have something to say about testing cars at that point of impact to try and learn about the strenght of the chassis in that area.

Shane was the "victim" of that once in a couple hundred wrecks that ends up with the car in that position, I don't know how you could plan for that, or for that matter, build a chassis that the driver could still access, and still function and drive it. I think all builders try to imagine all the scenerios, and work toward that goal, I know my chassis have been in some pretty serious looking accidents, one, somehow qualifying, my driver managed to flip it endo, and got the hood, and landed square on the top of the cage, bagged him danged good, but didn't hurt the chassis, not so good to the hood, and I've seen others do the similar endo, just rolled in, biked, caught the front bumper and slammed it right on the cage, it just sometimes happens, no matter how much you test, and how much strength you can build in, that test was a one in 5 million chance of happening, and I think we all know , or have an idea to make it stronger in that case, but could the driver get in and out? Lots of questions, not many answers! Bob