Suspension Geometry - Page 23 - JeepForum.com

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post #331 of 361 Old 06-22-2013, 05:46 PM
Imped
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You can do whatever you want....there's no reason you can't use them together. But is that truss going to sit too high? That's a better question.


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post #332 of 361 Old 06-22-2013, 05:50 PM
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Quote:
Originally Posted by Imped
You can do whatever you want....there's no reason you can't use them together. But is that truss going to sit too high? That's a better question.
I had a feeling you might say that, but I was going to trim the ends, so that the upper part would sit flush with the top of the housing.

I would ten need to think about verticle separation. What did you say was a rule of thumb? 80% of the axle side at the frame?

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post #333 of 361 Old 06-23-2013, 08:56 AM
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The general 'rule of thumb' is 75% but desired results trump rules of thumb.

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post #334 of 361 Old 07-13-2013, 05:36 PM
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Question, on a balanced dual-capable rig for desert crawling and speed, how should the roll center be set up? On a high roll center there's greater stability (common sense veers me to this option), and on a low roll center there's a better performance of climbing and bump absorption during high speeds. Also, is there truly an exceptional difference? Am I looking too much into a single component?
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post #335 of 361 Old 07-16-2013, 01:41 PM
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That's a tough one.....for a dual purpose rig that isn't specializing in high speed, I wouldn't worry too much about lowering the RC. I run a fairly high roll center and it handles great on the road, feels great in off-camber situations and glides over the rough stuff when going as fast as I feel comfortable going.

So yeah, don't focus too much on it.

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post #336 of 361 Old 07-16-2013, 03:10 PM
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All right, thanks for the advice!
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post #337 of 361 Old 05-19-2014, 01:08 PM
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So bumping this for a couple of questions.

In the beginning, they had a little bit of discussion on trusses. What's your take on the Barnes 4x4 truss? http://www.barnes4wd.com/Dana-44-Hea...russ_p_55.html
The BTF truss looks beefy, but as stated earlier in the thread it may interfere with the gas tank.

For the 4-link, I'm undecided on whether to go with Johnny Joints or the Duroflex joints. I'm leaning towards the Duroflex because this will be on a DD and I am really impressed by their joints (Currently have JJs on savvy arms) But the problem is metalcloak doesn't offer the right size end for what I've seen most people recommend. It seems the standard configuration is 1.25" shank 2.5" joints for the lowers with 2"OD 1.5"ID tube, and 1" shank 2.5" diameter joints with 1.5" OD 1.25"ID tube for the uppers. But metalcloak doesn't offer the 1" shank joints (they have one, but it has a wierd mounting width). And the duroflex joints are a little more expensive. Thoughts?

Last question. I guess it would probably be more of preference type thing, but double adjustable for everything? Or weld a solid barrel on one end and make a single adjustable lower? I'm thinking definitely double for the uppers for ease of adjustment, but not sure for the lowers. Cost are a little lower with single adj. and easier to tighten jamb nuts?

Thanks for any input. Hoping I can get this knocked out this summer.
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post #338 of 361 Old 05-19-2014, 01:37 PM
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Quote:
Originally Posted by LA-Sahara
So bumping this for a couple of questions. In the beginning, they had a little bit of discussion on trusses. What's your take on the Barnes 4x4 truss? http://www.barnes4wd.com/Dana-44-Hea...russ_p_55.html
I run their truss on my 8.8. I cut three inches from each side and rotated it for a tight fit against the pumpkin. It was way too tall to begin with, unless you want to mount your links between the truss and pumpkin.
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post #339 of 361 Old 05-19-2014, 01:39 PM
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Originally Posted by MisfitSeven View Post
I run their truss on my 8.8. I cut three inches from each side and rotated it for a tight fit against the pumpkin. It was way too tall to begin with, unless you want to mount your links between the truss and pumpkin.
Thanks, I thought it looked a little tall also and figured there'd be some cutting it down. Although the links inbetween sounds interesting.
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post #340 of 361 Old 05-28-2014, 12:20 PM
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Looks like this thread isn't real active but it may be better to add what I have here instead of starting a new thread. I have a 04 lj with a Zone 4" suspension lift at the moment. My plan is to build a 4 link rear very similar to what has been talked about in this thread along with doing a 4" stretch at the same time. One problem I have right now is on climbs the front end has very little traction basically the front end unloading. Finding a definitive answer on what causes this seems to get lost in all the discussion I've seen so far and I've read a lot. I might have missed it somewhere to be honest. Could someone chime in on their experience with what they have seen causes this and how to fix it? I'm thinking it's caused from multiple problems, to soft a spring and high anti-squat?
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post #341 of 361 Old 05-28-2014, 04:24 PM
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Just ordered all my 4-link stuff with Memorial Day sales. Time to re-read this thread again a few more times.
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post #342 of 361 Old 05-29-2014, 04:38 PM
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Finally downloaded the 4-link calculator to mess around with today. Gonna wait for my brackets to get in to see how everything will fit so I can use the calculator as an estimate like everyone says, but while I was learning to use it I decided to see where I am starting from. Imped did some rough calculations earlier in the thread, but I tried to make mine pretty accurate and using my current tires. Here's what I got:
No wonder the jeep rolls so much in the turns. Pretty sure I can get my Roll Axis Angle down to even 1 degree and it be much better than what I have now. Hope the UPS man hurries up!
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post #343 of 361 Old 05-29-2014, 04:47 PM
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I also played around with how my setup might be.
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post #344 of 361 Old 07-18-2014, 03:40 PM
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Lots of great info!

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post #345 of 361 Old 09-05-2014, 05:07 PM
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Update: Finished my 4-link towards the middle of June, still going strong and riding great. Artec brackets were really nice. But I need to get these Fox's tuned by Wayne. Also, possibly hold the record for youngest 4-linker?? (18 y/o)
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