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Friday, August 25, 2023

4 X 4 Suspension

Jeep JL ICON Suspension

I've been watching Matt's Off Road Recovery on YouTube for a while now and I am reminded of the amount of flex these vehicles need in order to get around when out crawling around on big rocks. The way you get flex is to remove the (anti)roll bars from the suspension. Problem then is that the vehicle leans heavily toward the outside when going around corners at speed. Second problem is the large twisting force applied to the vehicle when it goes over ground and the front axle has tilted one way to maintain contact with the ground, and the rear axle has tilted the other way for the same reasons.

Solution: mount one of those fancy shocks at each cornet and connect them via hydraulic or gas lines to each other. When one shock gets compressed, it sends gas to the other three shocks. The shock on the other end of the same axle uses it to extend the shock. The shock on the other axle, but on the same side of the vehicle also uses it to extend the shock. However, the third shock, the one diagonally opposite from our #1 example shock, uses the pressure to contract the shock, mirroring the action of the #1 shock.

Well, I think it's a great idea, but now I'm thinking I'm going to need to build one and try it out. I figure I'd buy an old jeep for maybe ten grand, and then hire a local 4 by 4 shop to install the pneumatic suspension. That'd probably cost another ten grand. And then you probably ought to double it because these things never go as planned.

What would help if I knew somebody who worked with suspensions for 4 by 4's on a daily basis, What would really help is my leg would stop complaining.

Previous post on the subject.

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