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post #1 of 26 (permalink) Old 06-28-2007, 09:49 PM Thread Starter
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roll over angle

Anyone know what angle on a hill I can take my XK and drive horizontally? It's stock except for the engine mods. Just wanted to know when it would want to roll.


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post #2 of 26 (permalink) Old 06-29-2007, 10:06 AM
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Re: roll over angle

One way to find out. Find the biggest, nastiest hill and climb it. Or go to the Jeep web site and look for the angles. Well this is from the Jeep site. “Ground Clearance - Break over Angle [DEG] 20.7. Ground Clearance - Departure Angle [DEG] 27.0. Ground Clearance - Approach Angle [DEG] 34.2.” It will probably climb damn near any grade of hill you can find. Just make sure it's point it straight up the hill and it will not tip over. Off camber is a different story.
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post #3 of 26 (permalink) Old 06-29-2007, 10:12 AM
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Re: roll over angle

Quote:
Originally Posted by XK-Hemi
One way to find out. Find the biggest, nastiest hill and climb it. Or go to the Jeep web site and look for the angles. Well this is from the Jeep site. “Ground Clearance - Break over Angle [DEG] 20.7. Ground Clearance - Departure Angle [DEG] 27.0. Ground Clearance - Approach Angle [DEG] 34.2.” It will probably climb damn near any grade of hill you can find. Just make sure it's point it straight up the hill and it will not tip over. Off camber is a different story.
I went and read up on Break-over angle and it wasn't what I originally thought. Break-Over is where the Jeep will get high centered. I couldn't find anything about at what angle it would actually flip over itself.

And I also reread the original post and see that he said he's driving horizontally, not vertically, to the hill - so thats another angel all-together. I'm not going to test it in MY XK, but if someone has the numbers, I'd be curious about that too.

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post #4 of 26 (permalink) Old 06-29-2007, 11:13 AM
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Re: roll over angle

Supposedly, the side slope angle the Commander can successfully navigate is "the same as the LR3, but less than the H2" ... which means that it's somewhere between 30-35 degrees, and less than 40 degrees, depending on which angle the LR3 can actually do.

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post #5 of 26 (permalink) Old 06-29-2007, 02:13 PM
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Re: roll over angle

And of course, if you raise it up at all, I'm sure that angle decreases...

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post #6 of 26 (permalink) Old 06-29-2007, 04:08 PM
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Re: roll over angle

Where and how the cargo is loaded, as well as weight of cargo will also change the angle at which the vehicle will tip or not. I doubt you will find any solid numbers regarding this because there are too many variables that would affect the actual roll-over angle. Anything that would change the center of gravity would change the angle. Even how much fuel was in the tank would affect it.

Last edited by olllllllo; 06-29-2007 at 04:14 PM.
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post #7 of 26 (permalink) Old 06-29-2007, 11:53 PM
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Re: roll over angle

Personally I think you need to leave the High Marking to the snowmobiles and four wheelers.
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post #8 of 26 (permalink) Old 06-30-2007, 07:47 AM
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Re: roll over angle

My experience in offroading is that you will "chicken out" before the jeep reaches the rollover angle. You would be amazed at how MUCH pitch you THINK you have as compared to reality. That being said, a common rule in offroading is ALWAYS approach a hill straight up and if you have to back straight down. Attempting to turn around can be very hazardous, especially downhill as the weight of the jeep is moving toward the bottom of the slope. john
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post #9 of 26 (permalink) Old 06-30-2007, 09:49 AM
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Re: roll over angle

My buddy had an older toyota pick-up truck, and it had this gauge pod with one that would warn you before you reached a certain angle. I agree, the point at which you become very nervous was well within 30 degrees! I have attached some info here on it since it can be added to any vehicle.

Toyota Clinometer

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post #10 of 26 (permalink) Old 06-30-2007, 11:32 AM
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Re: roll over angle

Quote:
Originally Posted by XK-Hemi
It will probably climb damn near any grade of hill you can find. Just make sure it's point it straight up the hill and it will not tip over.
That would then be a vertical climb. He asked about what angle he can drive horizontally. What angle can it take to the side (rollover).
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