Negative arch SOA Springs - JeepForum.com
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post #1 of 19 Old 04-11-2019, 09:25 AM Thread Starter
Duck Doctor
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Negative arch SOA Springs

Had a set of double military wrap springs built for my SOA build that were theoretically designed to provide 1” lift over stock springs.

Installed the springs and drive about 100 miles over a couple months. Couple weeks ago went on a two hour long easy trail ride. Get home and the leaf springs sagged to the point that they now have a noticeable negative arch. Lost about 2” of height in one day.

Should I just toss these springs and have a new set built by another company? I need the additional ground clearance for the Rubicon trail and Fordyce. Going to have to run the TJ until I can get this suspension issue dealt with.

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post #2 of 19 Old 04-11-2019, 12:10 PM
Steve707
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Did you buy them new? Id try to contact the company you bought them from if they sagged that much so soon.
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post #3 of 19 Old 04-11-2019, 01:12 PM
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Quote:
Originally Posted by Duck Doctor View Post
Had a set of double military wrap springs built for my SOA build that were theoretically designed to provide 1 lift over stock springs.

Installed the springs and drive about 100 miles over a couple months. Couple weeks ago went on a two hour long easy trail ride. Get home and the leaf springs sagged to the point that they now have a noticeable negative arch. Lost about 2 of height in one day.

Should I just toss these springs and have a new set built by another company? I need the additional ground clearance for the Rubicon trail and Fordyce. Going to have to run the TJ until I can get this suspension issue dealt with.

If you are tossing money away, Toss some this way...

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Originally Posted by Steve707 View Post
Did you buy them new? Id try to contact the company you bought them from if they sagged that much so soon.

^^^ This...


FWIW, I'm running crown 6 leaf with added main leaf and 37's with plenty of height . Not too expensive too. Do you really need that extra inch? She maybe, but you?
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post #4 of 19 Old 04-11-2019, 01:24 PM
JeeperDon
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I agree with Steve, that is too much sag too soon. Contact the mfg.

'93 YJ, '02 GM 4.3V6, SOA, dual ARB's, 8.8+D30(WarnHubs), 4.88s, 35" BFG KM2s, AX15, NP231+4:1+SYE+2LO, York OBA, Warn M8000.
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post #5 of 19 Old 04-11-2019, 02:59 PM
Joe Dillard
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I recall your other thread from a few months ago about the new Atlas leaf's when you were installing them.

https://www.jeepforum.com/forum/f12/...ected-4338025/

Judging by the looks/design of the Atlas leaf's you installed a few months ago, I'm not surprised.

Yours remind me of some brand new leaf's that a friend was testing out on his SOA YJ. His didn't last for even one trail before they gave up the ghost.


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post #6 of 19 Old 04-11-2019, 04:59 PM Thread Starter
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Yeah. They are Atlas springs. Those extra inches are absolutely necessary wheeling in the California rocks otherwise I’ll just spend the entire time hungup on the rockers.

I have a built XJ and TJ that I also use but thought this YJ would be a fun rig to build.

I’ll Likely just buy a new seat of springs from Alcan or Deaver. Don’t feel like dealing with this again. Should’ve spend the extra few hundred dollars upfront. Now I get to buy twice.
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post #7 of 19 Old 04-11-2019, 07:38 PM
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Wow... Those give spring steel a new name.
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If you cannot fix it with a hammer then it has to be an electrical problem.
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post #8 of 19 Old 04-11-2019, 07:59 PM
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Not saying your springs aren’t junk but just curious what you did for bumpstops.

[size=3]Shackles & D-rings are different things.
Cranking IS turning over
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post #9 of 19 Old 04-12-2019, 04:41 AM
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Quote:
Originally Posted by fishadventure View Post
Not saying your springs aren’t junk but just curious what you did for bumpstops.
This, If they go negative arch especially alot you can kill the main leaf quick. Also, the quickest way I have seen leafs killed is from a heavy braking event with large tires. I killed a set when someone pulled out infront of me and they wrapped and unloaded a few times while I was hard on the brakes. They were on the jeep for two days. I believe @Radonexplosion had a similar issue braking before a sudden rut IIRC.
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post #10 of 19 Old 04-12-2019, 06:37 AM
JeeperDon
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Just get a set of RE SOA 1.5" springs, done. I've had mine for near 15 years with no issue, on both northeast and southwest tough stuff. You absolutely have to add an anti-wrap to the rear. Set it all up right once, done for years.
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post #11 of 19 Old 04-12-2019, 08:26 AM
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I'd do the 1.5 RE's or 2" BDS.

I ran the 2" BDS for a long time with no issues SOA, through the trails you've mentioned. I only pulled them because I went full width with a substantial stretch, they're still rocking on another rig no issue.

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post #12 of 19 Old 04-12-2019, 11:32 AM
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@87TPIYJ Radonexplosion sounds way cooler


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post #13 of 19 Old 04-12-2019, 02:12 PM
Joe Dillard
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Quote:
Originally Posted by Duck Doctor View Post
Yeah. They are Atlas springs. Those extra inches are absolutely necessary wheeling in the California rocks otherwise Ill just spend the entire time hungup on the rockers.
I know what you mean. "LCOG" rigs tend to find themselves at the end of a snatch strap or winch more often if wheeling in the big rocks (I'm talking JV).

I lived in SoCal for ~50 years, and wheeled there since the 70's up until I moved out east ~5 years ago.
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post #14 of 19 Old 04-13-2019, 10:27 AM Thread Starter
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Thanks for the help guys. I’ll look into the BDS and RE springs. Hope to have a new set installed within the month. I installed the MORE anti wrap last week.
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post #15 of 19 Old 04-13-2019, 10:37 AM
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Quote:
Originally Posted by Duck Doctor View Post
Thanks for the help guys. Ill look into the BDS and RE springs. Hope to have a new set installed within the month. I installed the MORE anti wrap last week.

I think you just solved the issue. Those pictured by Joe Dillard are from spring wrap, which every time I hear "SOA" I also end up hearing "Spring wrap" in a conversation shortly after.

Rick

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