1/4 Elliptical Rear Suspension

Ok, I have finally got around to fixing this page somewhat.  I decided to go with a 1/4 elliptical rear suspension out of cheapness.  I came across the springs on sale.  Same way with the brackets I bought for it.  While I was on my deployments, I found almost all of the items on sale at one point or another.

 

First I cut the rear of the frame off.  I did this so I could mount the springs up behind the frame that was left.  Trying to keep the jeep as low as possible.

Here you can see the chopped frame.  In this picture I have already welded on one butt plate and the top plate for the mounting of the spring.

A close up of the top mounting bracket for the spring.  This was meant to be welded on underneath the frame.  But like I said, I am trying to keep the jeep semi-low.

Another shot of the butt plate and top mounting bracket.  I was trying out my new Ready Welder for this.  I am starting to dig this welder.  It runs off of two car batteries.  You can see the setup in the top picture.

All of those pictures above here was done in the fall of 2004, before I went back to Iraq the second time.

These pictures below here are from after I returned home from that second deployment.  I purchased a tubing bender on this last deployment.  So plans have changed a little, I will now turn the rear portion of the jeep into a tube buggy.

But first I have to organize my new garage.  Yes, the wife and I purchased this house a few months before I returned from Iraq.  We found the home the last day of my leave.  Good thing, she got to move the house, bad thing, I have no idea where anything is.  And just look at this garage.

Ok, after I organize the garage I started bending up some tubing.  I wanted to get the front of the cage work done before I started on the 4 link.  So you check out the install of the New Cage here.

Here is the garage cleaned up and you can see the 1/4 elliptical springs are mounted up to the frame.

       

Now with the front of the cage complete I started to come up with some numbers for the 4 link.  I found a program on Pirate4x4 forums.  I would post it on my site but I do not want to offend the makers of it.  It is a really nice Excel program and you can find it under the General 4x4 Discussion forum.  Search for 4 link calculator and you should be able to find it.  Now I did a lot of reading on Pirate on this subject and what other members had for numbers and how their machines operated.  From this I wanted to shoot for a 60 to 70 percent anti-squat.  Once I played with the calculator to get the numbers in the ballpark of where I wanted, using my measurements, this is the hard part that you have to play around with.  This gives me a reference or starting point to go with in building the 4 link. Where to put the mounts is the big thing.

I will get a little more technical later on, since some of my notes are spread all over.  So for now I will just post the pictures, since that is what I have here with me.

Here are a few pictures of the links that I made.  My lowers are 2.5" OD x 1.5" ID.

       

My upper links are 2" OD x 1.5" ID.

Here is a shot of the upper link mount.  I had purchased that flat truss, but to get the numbers I wanted I had to raise up the axle mounted links.  So I bent some tubing and then welded in some half inch steel within the tubing.  It is in there tight and fully welded in so I hope it holds up to the torque of the upper links.  They will have some tremendous forward and backward forces on it.

   

   

There is the finished triangulated 4 link rear suspension.  Now I can finish the rear of the cage.