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post #1 of (permalink) Old 09-02-2002, 07:55 PM Thread Starter
 
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3/4 elliptic/buggy spring - CJ ???s

I've done some searching on this board and on the web, but have come across a mixed bag of answers regarding the functionality of 3/4 elliptic suspensions.

My CJ is mainly a trail rig, but does see part time street use in nice weather. I currently run 4" Trailmaster springs SUA, with extended shackles on locked D44s front and rear. The springs have been outboarded with the M.O.R.E kit.

I have the fabrication skills and tools needed to do the job right but my question is about streetablility and wheel hop/axle wrap both on and off road. I haven't committed to the mods yet, and wanted to get some more input as to whether or not it's worth it. I don't plan on going SOA because of the Scout D44 front and the fact that you've got to remove an extensive amount of material from the cast in perch on the housing.

1.) Is a wrap control system necessary to control spring wrap offroad? If so, I was thinking of a triangulated three link rear setup.

2.) What are the repercussions of keeping my extended shackles in the rear (leaving the front) if I decide not to put a buggy leaf front? I guess the question is - how much lift will the 3/4 setup give me if I use say, a main leaf from a stock CJ pack? I have stock CJ shackles and leafs to use.

3.) Since I do drive the Jeep on the road (it's not trailered unless it's broken [img]images/icons/smile.gif[/img] ), should I look at a way to keep the upper springs connected to the frame (a u-bolt would work I would think) to prevent the spring from unloading during braking?

4.) Is running a buggy spring in the front worthwhile in order to gain more suspension travel offroad, or is it a waste of time? I don't know of a way to run a shackle reversal because of how the M.O.R.E kit is designed. Is this a necessary mod, or just helpful?


5.) And finally, is a 3/4 elliptic setup in the rear worth it? I'd like to hear opinions from people who have run this setup, good or bad. Reasons why and steps you took to eliminate the problems are most helpful at this stage.
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post #2 of (permalink) Old 09-03-2002, 12:10 AM
 
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Re: 3/4 elliptic/buggy spring - CJ ???s

There is some info on my site from when I used a 3/4 ellip on the back of my CJ. I liked it, a little more body roll on the road buy nothing dangerous.
It does need a link to control spring warp but that's simple.
You need to go to my profile to link to my web site, it should anwser some of your questions.
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post #3 of (permalink) Old 09-03-2002, 12:18 AM
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Re: 3/4 elliptic/buggy spring - CJ ???s

Would there be anyway to keep the top leaf springs from seperating from the frame on the street around corners and stuff? I saw a 3/4 elip up at Funny Rocks a few months back. I sure didn't look like fun on side hills!!
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post #4 of (permalink) Old 09-03-2002, 12:29 AM
 
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Re: 3/4 elliptic/buggy spring - CJ ???s

Clamp it to the frame with U-bolts.

I used two leafs, the main and second military wrap. Made it stiffer so it didn't just fall away from the frame. Also made it safer in case one of the leafs break, which happens alot.
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post #5 of (permalink) Old 09-03-2002, 05:59 AM Thread Starter
 
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Re: 3/4 elliptic/buggy spring - CJ ???s

Thanks Wayne, yours was one of the sites that I had researched. You've got a great setup! Do I need the full three link system, or could I get by with a simple articulated traction bar?
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post #6 of (permalink) Old 09-03-2002, 05:39 PM
 
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Re: 3/4 elliptic/buggy spring - CJ ???s

Just a single link will do, the springs will still locate the axle. Maybe something like Jeff (H8monday) runs on his rig.
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post #7 of (permalink) Old 09-03-2002, 05:45 PM Thread Starter
 
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Re: 3/4 elliptic/buggy spring - CJ ???s

Thanks again Wayne. Is there anyone else who might be able to provide some more tips and trick into this mod? Any ideas are welcome.
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