The issue is, that modern cars are designed to crumple to absorb energy. In a purpose built race car, the cage adds much needed rigidity and the driver has a collection of harnesses, a helmet, neck brace, etc to absorb and limit energy transfer to his body to help minimize damage. In your garden variety minivan, adding rigidity will cause the energy that is supposed to be absorbed by the crumple zones, gets transferred into the cage, which maintains more strength, causing all that energy to then transfer into the occupants.
I'm not saying cages aren't safe, I'm not saying in limited circumstances they'd help in some kinds of accidents, but cars are safer now because they absorb all that crash energy, instead of just toughing it out for the meatbags strapped to the seat to absorb it.
Once you go purpose built, the rules and the safety methods change.
Sure but there isn't much for energy to absorb on the roof in the event of a roll over. Alot of older cars, trucks and SUVs have a poor safety rating on roof strength test. I believe a lot of manufacturers are now making the top of the vehicle safer from what I remember. So if a car had a roll cage, there would be more protection to keep the occupants safe from being crushed. I get what you guys are saying, that racing safety equipment work together. They would be tossed around like a rag doll with a seat belt on. I get it-I got it. But like I said, I believe that the chance for survival would be better.
Umm when did I say wearing a seatbelt wasn't safe? My point is that three points only prevent a certain direction of movement (forward)effectively - typical drive into something crashes - but in a rollover, or a T-boning for that matter, the belts don't do near as good of a job preventing vertical and horizontal movement, or even ejection. My point was you don't build a roll cage and use standard seatbelts if your goal is survival. Roll cages, racing harnesses and helmets go together like pistons, rods and cranks. They work in tandem or they don't work at all.
Also, a roll bar and roll cage aren't the same. A roll bar, yes, means if the car rolls over onto the roof the roof won't crush into the driver or front seat passenger's head, if you look at mild rollover accidents from cars with roll bars, yep, you can indeed see the roof collapsed around the main hoop, protecting the driver's head immediately below. You see these in street/strip cars often(due to track rules) but you don't see them in professional racing much anymore, because they're basically useless if the roll is more of a tumble, which they often are, literally shredding the car to pieces as I know you've seen. A roll cage is very much a different animal, the more accurate word for it is safety cage, these resist cabin intrusion period and are bred purely in a race environment. I recommend you look for in car footage of the drivers during many of the rally crashes on YouTube and watch the driver/navigator's helmets in relation to the main hoop, or better yet look at their helmet damage after the crash. Now imagine those same crashes without helmets and then imagine them with 3-point seatbelts instead of 5-point harnesses. It won't be pretty.
Sorry, no Facebook for me
Umm when did I say you said
wearing a seatbelt wasn't safe? Haha. Are you talking about my one liner there at the end? That was my safety tip of the day.
Yea you're right a roll bar and roll cage are different, not the same. I agree. In my original post I said roll cage. A true roll cage would reinforce the A and B post and in a minivan the C and D posts too giving you more protection from being crushed. I get what you're saying racing safety equipment work together, but I believe you have a better chance of survival if you didn't have one.
To each there own, I love Facebook. I hate to say it, but this place is dead because of it. Don't get me wrong I miss the old TCCoA. But right now the activity and posts is all there. There is also a SCCoA, Mark VIII and fox body groups galore.
I can attest to that, when that Silverado T-boned my Tempo by all accounts I was thrown around like a rag doll in there. In my case a helmet may have helped but a cage would have done nothing, for my injuries.
Not taking sides but just some personal perspective.
Yea like I was telling Matt and Woodman, in a roll over accident with the roof being supported by a roll cage. Glad you're ok.