3/4 Eliptic.

[HeepofaJeep]

We need to fill this new area with more topics, so here is my addition:

Has anyone thought about three quarter eliptic springs in the rear of their fsj? I know someone mentioned in another current post about springs that these are too soft, but there are ways to solve this.

1) use m715 main leaf (SUPER stiff) as the 3/4 eliptic.

2) rig the half leaf so that it is pressed up against the frame until you unlatch it for offroad use.

I did this for a friend's Yota, and it is a VERY easy upgrade to do, and me and another friend are contemplating doing this to his J 3000.

[ April 25, 2003, 09:03 AM: Message edited by: HeepofaJeep ]

[Matty]

good call. I've been trying to figure out a way to pull off a 1/4 elip on the waggy, and hadn't thought of that. gracias.

[orangecherokee]

i'd like to see this on a truck if i could. i've seen one guy do it but i never got to see it perform. do you have any pics of that set-up?

[dnixon]

The thing about the elliptical stuff is that those are mostly drooping systems. I have the Pirates of the Rubicon video and a guy or two on that video have eliptical set ups and they ran pretty darn good on the rocks. I think its all about what you want it for, cause you aren't going to get much compression with a eliptical setup at least thats my opinion on it. I am not bashing it in the least I think its a good set up that works for many people. i just don't see it in my future...

[blt2krl]

Originally posted by SLOwag:
The thing about the elliptical stuff is that those are mostly drooping systems. I have the Pirates of the Rubicon video and a guy or two on that video have eliptical set ups and they ran pretty darn good on the rocks. I think its all about what you want it for, cause you aren't going to get much compression with a eliptical setup at least thats my opinion on it. I am not bashing it in the least I think its a good set up that works for many people. i just don't see it in my future...I agree. I see more potential in a coil system like Frank from Norway.

[tomd]

Originally posted by HeepofaJeep:
We need to fill this new area with more topics, so here is my addition:

Has anyone thought about quarter eliptic springs in the rear of their fsj? I know someone mentioned in another current post about springs that these are too soft, but there are ways to solve this.

1) use m715 main leaf (SUPER stiff) as the 1/4 eliptic.

2) rig the half leaf so that it is pressed up against the frame until you unlatch it for offroad use.

I did this for a friend's Yota, and it is a VERY easy upgrade to do, and me and another friend are contemplating doing this to his J 3000.I think you are talking about 3/4 elliptical or Buggy Spring. A 1/4 elliptical is where you cut off half of a spring pack, then mount it upside down to the frame, then on the spring eye end, you mount it to the axle, and use a 3 or 4 link to locate the axle.

Search, i remember talking about it a while back.

[ April 24, 2003, 03:46 PM: Message edited by: 74 Wag ]

[rockjeep44]

You know you can get 1/4 elliptic springs made specifically for your truck. You weigh the rearend and frontend and get the springs made with springrates specifically for you. Just like I had my alcan springs custom made for my weight. Same concept. So, being too soft is not a problem.
-Andrew

[orangecherokee]

yeah but snapping a custom leaf in the woods is...j/k tongue.gif

[HeepofaJeep]

I think you are talking about 3/4 elliptical or Buggy SpringOOOps, I am sorry. I was referring to the 3/4 eliptical. I always get the two confused. Slow wag, It is definately more of a drooping system

Unfortunately, I do not have any pictures of what we did to my friend's truck because it was stolen :eek: :mad: :mad: :(

Sorry about the confusion!!!

[FYR WOOD]

are we talkin on the front or the rear of the truck? the front I can understand if you did a shackle reversal first, but on the rear you would have to inboard your springs as they sit outboard the frame. This gives you nothing to mount the buggy leaf to. Seems like more work that its worth. Revolvers would be a much easier route if you were that concerned with droop.

Scott

[tomd]

With front, you don't want a shackle reversal first, if you do, when you go to climb a ledge, your front end can walk forward, basically drooping the springs, and the rear doesn't move.

You wouldn't have to inboard the springs, i had thought about just mounting up a large piece of angle iron, of course gusseted, and mount the 3/4 ellip leaf to it, and then could set up a lock for it. But still, a lot of work. I was looking at this setup, up until i decided i am gonna try coils in the rear.

[FYR WOOD]

I'll tell you what, the setup that I have is tons flexy and gives me more droop than I've seen on some coiled rigs. I have riverbeast's shackle flip kit, rustys 3/4" XJ shackles, and stock leaf packs from a 72 Cherokee with an extra main leaf with the eyes cut off underneath the main leaf, and a short kicker leaf from a YJ pack on top of the whole pack to help with axle wrap. The springs go slightly negative on full compression, but they droop like you wouldnt believe. And to top things off, they ride like a Cadillac. I've never had a problem with too little droop and she gets wheeled pretty hard.

Scott

[tomd]

72 Chero? I didn't think they came out till 74? And a pre 76 FSJ would have shorter rear springs than post 75.

[HeepofaJeep]

It's real easy to move springs inboard. Just weld new spring perches, and spring hangars, and there ya go.

[Panther]

Here's a link to buggy's and inboard springs:

http://www.geocities.com/worm2881/index.html

[River Beast]

Look thru this site!!!!

http://www.bluetorchfab.com/index.htm

they do some RADICAL custom work here....

here is a shot of thier suspension work....

http://www.bluetorchfab.com/images/JB_YJ/JB17.jpg

[ April 28, 2003, 12:33 PM: Message edited by: River Beast ]

[Jubbs74]

I had to bring this thread from the dead.

I have been thinking of doing this on my rig. I want a system that is very droopy so that I can run a lower center of gravity yet still be able to flex in and out of ruts and over rocks. I was wondering what the downside (if any) there was to doing this in the front? Is there major steering issues that need to be taken into consideration? Would this mess with pinon angles dramatically?

RJ