Does the X have an "integrated roll cage" like the earlier Evos?
^^^this is totaly off subject but that is a IV in your Avatar....i like the fact that the X is bigger im deff looking into them when i get back to the states
Last edited by Roberti22; Mar 11, 2010 at 09:38 PM.
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From: Houston, TX
as for the op's question, "would it be safe to have fixed-back seats and harnesses in an Evo without a cage?" all the discussions i've ever read from track gurus suggest that this is a very bad idea. and given that some posted above that they've seen evos actually crushed when flipped, well, i guess that's that then. besides, your seats already have harness holes, and are relatively bolstered, full buckets probably will not hold you too much better if your harnesses are on tight enough. i know in my vette, even with those lame useless seats it has stock, with harnesses i can hardly move (not that this was a brilliant idea either with the stock seats.)
I now teach classroom for various track organizations, and I talk about how the car was designed as a complete safety system. If you change one piece of that system, the entire system is compromised.
I'm just trying to figure out if the Evo is strong enough (NOT stiff enough, as this discussion has seemed to devolve into--two different things) to not require a bar/cage with fixed back seats & harnesses. In other words, would the roof collapse onto a driver rigidly held in his seat, as it would in most every other stock car, or did they construct the Evo with some kind of integrated roll cage? I still haven't heard a satisfactory answer yet.
Honestly, I'm thinking the answer is now "no", given statements such as "I've seen Evos with their roof caved in".
While the X is substantially stiffer than all the prior chassis, its not heavier only because of that. Its mainly heavier because its a platform share with much larger vehicles and it just flat out larger in all dimensions. I know you know this already, Mr. Rob, just posting it for others benefit.
And you did a great thing , posted to educate for other people benefits.
I'm just trying to figure out if the Evo is strong enough (NOT stiff enough, as this discussion has seemed to devolve into--two different things) to not require a bar/cage with fixed back seats & harnesses. In other words, would the roof collapse onto a driver rigidly held in his seat, as it would in most every other stock car, or did they construct the Evo with some kind of integrated roll cage? I still haven't heard a satisfactory answer yet.
Honestly, I'm thinking the answer is now "no", given statements such as "I've seen Evos with their roof caved in".
Honestly, I'm thinking the answer is now "no", given statements such as "I've seen Evos with their roof caved in".
If the car flipped would the roof cave in on the driver? Depending on how hard it landed on the roof, I would assume yes.
The B pillars on the X use 3 full layers of stampings stacked on top of each other for increased side intrusion protection while the roof structural beams use 2 layers. The Evo VIII-IX use 1 layer each.
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Paul Nelson
Evo Engine / Turbo / Drivetrain
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May 9, 2007 08:57 AM
