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Anyone know how much travel the stock Rubicon suspension has?

Compression-Ignition

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In month 5 of waiting for our JLURD that is on order, and since I can't use mine to check, I'm asking you fine folks.

I saw a post on here where someone stated the travel was 10-11" in the rear, but it was theoretical. He hadn't actually stuffed the tires as far they would go up, and then went the other way and drooped the axle out.
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In month 5 of waiting for our JLURD that is on order, and since I can't use mine to check, I'm asking you fine folks.

I saw a post on here where someone stated the travel was 10-11" in the rear, but it was theoretical. He hadn't actually stuffed the tires as far they would go up, and then went the other way and drooped the axle out.
89F46E67-6994-4DA6-9A53-FDE90A3B3BFA.png


Thank AnnDee4444 for the list. Here is the original post and post#5 explains how the suspension travel can be more than the shock's stroke.

https://www.jlwranglerforums.com/forum/threads/mopar-fox-shock-length.46096/
 

AnnDee4444

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Travel at the wheel is also more than at the shocks due to the shocks being mounted inboard.

I don't have the number of inches calculated, but the stock Rubicon shocks should allow both the front & rear axles to achieve a little more than a 25* angle when compared to the body. This doesn't take into account bump stops, tire rub, new mounting points, or bind. It is just the physical limitation of the shocks.

Sport = 18.5* front, 21.7* rear
Rubicon = 25.2* front, 25.4* rear
Mopar lift = 28.2* front, 26.9* rear

Fox 2.0 IFP 0-1.5" lift = 31.3* front, 30.8* rear
Rancho RS9000 0" lift = 17.0* front, 19.7* rear
 

AnnDee4444

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Compression-Ignition

Compression-Ignition

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Wow, good stuff @AnnDee4444. What does this mean?

Vertical Shock Height
(with 11" horizontal
@ JLR ride height)
The front shocks are straight up and down, and the rears are mounted on the frame 11" away horizontally above the mount at the axle?
 

AnnDee4444

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Wow, good stuff @AnnDee4444. What does this mean?



The front shocks are straight up and down, and the rears are mounted on the frame 11" away horizontally above the mount at the axle?
That is exactly what I meant... but I probably could have worded it better. If you are familiar with the pythagorean theorem (a*a + b*b = c*c):
a = ride height
b = 11" (the horizontal distance component of the rear shock)
c = rear shock length​


Going by the shock angle wouldn't be as accurate, since it changes with ride height.


For fun I've also calculated the rear shock motion ratio; it ranges from 1.31:1 for a fully collapsed Sport rear shock, to 1.07:1 for a 30" extended shock. There's probably a more meaningful way of showing this, but it's already borderline not important since the motion ratio is fairly linear.
JL Rear Shock Motion Ratio.png
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