what the hell?

[dan58]

What in God's name is this thing? I post on an AMC board from time to time. I had a picture of the rear 4-link, and got this response...

I like the "zero antisquat" in his design. :D


Dan, I noticed your pictures of your project that you posted. I see that you are setting up a new suspension under your rig.

Ya know I have been looking at pictures and reading many other blogs on other peoples suspension designs. I also noticed that your new rear suspension is much the same as most everyone is using. In reading their blogs about the issues that they encounter with your type of suspension I read that rear steer is a big issue and I can see why. Some of them get real unwieldy in the rear steer during articulation. Squat and anti squat also is greatly discussed.

Well Dan, I too am retrofitting my jeep and I decided to go the path not well traveled. I like everyone wants to achieve the best articulation and without the bad effects that are inherent in the system they have chosen. The style you are going with will have the inherent rear steer problem during extreme articulation. That also is the inherent problem with the style I have chosen to use, the quarter elliptic spring. I want to use this style as it has the best articulation capabilities. I have read all about the problems that are inherent in the Q E suspension and can see why it is not really to popular with wheelers. I put some thought into it and decided not the follow the path others have taken in applying this set up and try to overcome the unwanted effects. I believe that I have done just that. In the shop everything checks out in grand fashion. One day I will be finished with my project and be able to field test it. But in putting it through all paces of articulation it appears to be what everyone is looking for; ZERO REAR STEER and a minimum of anti squat. I'll post some pic's of my effort for you and others to look at. My set up has very little pinion angle change maybe 1* at the most. No u-joint binding or anything even remotely so.

Axle wrap is handled completely by the lower links and the upper centering links only handle the centering of the rear without placing the duties of handling wrap and centering such as the design that you have in your pic's. That is why I do not have to use the heavy duty set up that your design requires.

Also you might note the swivel mount for the front attaching points that I use. Along with the pivoting cross-member that it and the springs are attached to. This allows the links to always maintain the same lengths during articulation which eliminates the unwanted problems stated above. All the arcs work together and with each other rather than fight against each other.

I just thought I would give everybody something to think about. I'm not much for monkey see monkey do.


http://i908.photobucket.com/albums/ac282/lvanyi/Quarter%20Elliptic%20with%20zero%20rear%20steer/000_0001.jpg

http://i908.photobucket.com/albums/ac282/lvanyi/Quarter%20Elliptic%20with%20zero%20rear%20steer/000_0002.jpg

http://i908.photobucket.com/albums/ac282/lvanyi/Quarter%20Elliptic%20with%20zero%20rear%20steer/000_0005.jpg

http://i908.photobucket.com/albums/ac282/lvanyi/Quarter%20Elliptic%20with%20zero%20rear%20steer/000_0004.jpg

http://i908.photobucket.com/albums/ac282/lvanyi/Quarter%20Elliptic%20with%20zero%20rear%20steer/000_0006.jpg


http://i908.photobucket.com/albums/ac282/lvanyi/Quarter%20Elliptic%20with%20zero%20rear%20steer/000_0003.jpg[/img] :sa: :sa: :sa:

[CrawfishStu]

That color will never work.

[BBoarder]

i didn't know MFerreri was doing a 1/4 elliptical haha

[dan58]

DelMarVa Offroad, FTW. :lol:

This thing is crazy complex. The lower links attach to a floating plate on the crossmember. The wishbone has a "slide" of sorts with two grease fittings on it.

[Numidian]

I wanna see it in action... It might work good for slow crawling LOL

[CJTHING]

That color will never work.

I think you are wrong on the color not working. It's clearly on the lower end of the color spectrum. Which means what ever rig has orange colored links will have a low center of gravity.
http://www.bwayweb.com/design/i/color_spectrum.jpg

[Brandon95yj]

ok so the lower link and quarter elliptical setup is held together by one brack on each side. (first pic circled in yellow)

Also the quarter elliptical springs are connected together via a crossmember binding the springs with each other (first pic green arrow)

As for the upper wishbone....its is sleeved and held together by what looks like 5/16 bolts... and that bracket looks uber strong on the diff. (second pic)

I dont even have time to reflect on the rest of the design and how it would bind and break in no time. :thumbsup::happybear::cheers::rolleyes::eek::lol:: puke:


I would call this a quarter elliptical radius armed wishboned nightmare.

[67temp]

Revolver's on the axle mounts for the leafs?

With the upper mounts for the leafs only provide downward force when the leaf is hitting that thing you could probably call a bumpstop?

My head hurts just trying to count the things wrong. :puke:

[zucruisers]

I would call this a quarter elliptical radius armed wishboned nightmare.

X2, but i would add broken in there somewhere:lol:

[webbjeepxj]

Im trying to imagine it hitting the bump stops ......... LOL

Looks like the work of an artist and not a wheeler

[webbjeepxj]

I think you can buy that suspension set up at Harbor Freight, lol

[Ripster]

I think you can buy that suspension set up at Harbor Freight, lol

Or JC Whitney. :lol:

[davenjeip]

I'm having a lot of trouble understanding it.

[poopypants]

this setup up is pretty badass...its making me rethink the whole airplane on a treadmill concept