Advertisement



IIHS rollover test?

Sean L

Well-Known Member
First Name
Sean
Joined
Mar 9, 2018
Messages
24,029
Reaction score
117,769
Location
North Carolina
Vehicle(s)
2018 Jeep Wrangler Sahara, 2017 Honda Accord Sport, 2003 Yamaha V Star 650 Silverado, 2014 Yamaha V Star 1300 Tourer
Occupation
Retired Marine, Construction Estimator
Vehicle Showcase
2
I'm just saying that pretty much all ladder frames are built that way and there's no real way around it. If the other vehicles don't exhibit the behavior and have a very similar shape....that's not the underlying cause of the tip over.
Yes, but not all ladder frames are identical. Here's a Ram 1500 frame vs the Wrangler frame for reference.

1589463077964.png


1589463294731.png


You'll note in the slow motion portions of the IIHS video of the wrangler that the tipover does not begin until the vehicle hits that point where the frame widens out. A better bumper could help out in this situation I'm sure, but the shape of the Jeep's frame does appear to be a contributing factor.



Advertisement



 

Badweissenbier

Well-Known Member
First Name
Bad
Joined
Aug 6, 2018
Messages
204
Reaction score
142
Location
WV
Vehicle(s)
2018 Billet JLUR
Energy has to go somewhere. So choice here - all of the energy absorbed straight towards the driver through the vehicle, or part of that energy straight towards the driver and part used laying it on its side.
I think I might take the latter.
Kinda don’t care about the vehicular damage as much as my own damage at that point.
As they say , seat belts and keep your hands and arms inside the ride at all times.
 

TEXGOAT

Well-Known Member
Joined
Apr 2, 2020
Messages
1,648
Reaction score
1,278
Location
Texas
Vehicle(s)
2018 JLU
I'd expect to find that the Jeep's long suspension travel may have contributed to the tip over in the that situation. Exactly how the lower control arm collapsed was probably a factor too. Perhaps the lower shock mount was broken also, taking the shock damping force away. I avoid motor vehicle crashes because they are inherently dangerous. Given all the variables in real world crashes, you mind be better off in a 1955 Desoto in a particular crash than you would be in a new Subaru in that same crash. Drive 'em or park 'em, kiddies ... and for everyone's sake, put that damned phone down!!!
 

Sean L

Well-Known Member
First Name
Sean
Joined
Mar 9, 2018
Messages
24,029
Reaction score
117,769
Location
North Carolina
Vehicle(s)
2018 Jeep Wrangler Sahara, 2017 Honda Accord Sport, 2003 Yamaha V Star 650 Silverado, 2014 Yamaha V Star 1300 Tourer
Occupation
Retired Marine, Construction Estimator
Vehicle Showcase
2
I avoid motor vehicle crashes because they are inherently dangerous.
I also like to avoid MVAs myself, lol.

you mind be better off in a 1955 Desoto in a particular crash than you would be in a new Subaru in that same crash.
Someone always brings this up. Modern vehicles are far better in crashes than classics. Run the same type of test with a CJ-5 and you're bound to see a HUGE difference in how it does compared to the JL.

 

TEXGOAT

Well-Known Member
Joined
Apr 2, 2020
Messages
1,648
Reaction score
1,278
Location
Texas
Vehicle(s)
2018 JLU
A frame that is nearly as wide as the body is much safer in many crashes than a narrow frame. It also provides a much more stable structure to attach the rear suspension. The Jeep has a strong frame and a body with good understructure. I'll take that in a crash any day over a narrow frame vehicle with a weak floor structure.
 

TEXGOAT

Well-Known Member
Joined
Apr 2, 2020
Messages
1,648
Reaction score
1,278
Location
Texas
Vehicle(s)
2018 JLU
I did not say that older vehicles are inherently safer. FWIW, I don't like the 1958-61 GM X frames.
 

Sean L

Well-Known Member
First Name
Sean
Joined
Mar 9, 2018
Messages
24,029
Reaction score
117,769
Location
North Carolina
Vehicle(s)
2018 Jeep Wrangler Sahara, 2017 Honda Accord Sport, 2003 Yamaha V Star 650 Silverado, 2014 Yamaha V Star 1300 Tourer
Occupation
Retired Marine, Construction Estimator
Vehicle Showcase
2
I did not say that older vehicles are inherently safer. FWIW, I don't like the 1958-61 GM X frames.
take a look at what you wrote again. You did say that.
 

Toycrusher

Well-Known Member
Joined
Oct 2, 2019
Messages
733
Reaction score
923
Location
Texas
Vehicle(s)
JLUR
What I saw was basically a result of the large tires on the Wrangler. It drove up and over the other vehicle, just like we want our Jeeps to do...
 

TEXGOAT

Well-Known Member
Joined
Apr 2, 2020
Messages
1,648
Reaction score
1,278
Location
Texas
Vehicle(s)
2018 JLU
The 1959 Chevrolet had no frame siderail at all. I could have told those fools that if they'd have asked.
 

Sean L

Well-Known Member
First Name
Sean
Joined
Mar 9, 2018
Messages
24,029
Reaction score
117,769
Location
North Carolina
Vehicle(s)
2018 Jeep Wrangler Sahara, 2017 Honda Accord Sport, 2003 Yamaha V Star 650 Silverado, 2014 Yamaha V Star 1300 Tourer
Occupation
Retired Marine, Construction Estimator
Vehicle Showcase
2
The 1959 Chevrolet had no frame siderail at all. I could have told those fools that if they'd have asked.
I think you're missing my point.
 

TEXGOAT

Well-Known Member
Joined
Apr 2, 2020
Messages
1,648
Reaction score
1,278
Location
Texas
Vehicle(s)
2018 JLU
Re: TYPO: The word "mind" in the post above should be "might". I can rede and spel, butt I cant tipe!
 

Sean L

Well-Known Member
First Name
Sean
Joined
Mar 9, 2018
Messages
24,029
Reaction score
117,769
Location
North Carolina
Vehicle(s)
2018 Jeep Wrangler Sahara, 2017 Honda Accord Sport, 2003 Yamaha V Star 650 Silverado, 2014 Yamaha V Star 1300 Tourer
Occupation
Retired Marine, Construction Estimator
Vehicle Showcase
2
I said no such thing. Work on your reading comprehension.,
Just what else is This supposed to mean?

you mind be better off in a 1955 Desoto in a particular crash than you would be in a new Subaru in that same crash.
I can read English pretty well.
 

Advertisement






Advertisement




Top