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Old 03-15-2010, 08:11 AM
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Default Load adjusting rear shock options

On the way back from Moab, I had worsening trailer sway/truck rocking going down the road. Pretty spooky at times, really starts up at 65 and above.

The only trouble is, I wasn't towing a trailer!

Dr. Schlegs rocked the Chili at a gas stop while I looked under, and sure enough, it rocked another time or two after he stopped. Methinks my 9012s are shot in back. This may explain why I experienced more tow issues last year hunting... ya think?

I am thinking the 9012s are probably going to be warranteed (limited lifetime warranty, a good reason to go Rancho - that may be the deciding factor for me, free is good). But another issue I would like to resolve is load levelling when I am packed up or towing. Flexy soft rear springs are great, but for towing, not so much - 4Runner Buttdrag.

Air Randy suggested Fox Air Shox as adjustable helper springs. So I did a search on the web.
YIKE$.
And from what I see they are not so adjustable, at least not on the road - they require nitrogen and at high pressures, so I would need to carry a tank.

I thought about air bags after reading that article in Trails where the guy in the 80 used them to replace his coils. Tramontana uses them with his Taco, and they work great. But other info I read suggests that wheeling them tears them up - not a good choice. Affordable though.

The goal: Affordable and adjustable load leveling that won't negatively impact wheeling. I know there is an innovative solution out there. So start the brain storming!
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Old 03-15-2010, 08:32 AM
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It sounds like more of a spring problem than a shock problem. Are your springs REALLY soft, overloaded or broken?
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Old 03-15-2010, 08:35 AM
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Rather soft and long (by design), and not broken. Overloaded? Who, me? LOL

I had stiffer and shorter used Alcans on there originally, but they didn't articulate worth a raisin. It's one of those one-size-fits-all-uses kinda problems.
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Old 03-15-2010, 09:21 AM
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Bill, I swear by the Rancho 9000's I used them in my 91 4Runner and they were great. I plan on getting them for the Dodge when the shocks on it wear out.

Get the in-cab adjustment controller and you'll also be able to use them off-road then.

The other option you may look into are air bags like we have on the big trucks. Adding coils to your springs set for a certain weight and heights so when you load up they make contact.

Or, carry the stuff you had on a bumper rack to keep the COG down that would be the cheapest and easiest.
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Old 03-15-2010, 09:22 AM
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So guessing that they might now work because they wouldn't have enough travel..

I wonder if you could use air bags as "helper" springs and just not attach them to both frame and axle, just one. I have no idea if that works or not. I've installed a few sets on tow vehicles but they were not 4wd by any means. In both applications they were bolted to the frame and axle like they were supposed to be. I mean do they make air bags that would work like big bump stops? I know that's not how they are supposed to work but maybe there is a design out there that is meant to be used llike that? Maybe there are big baja bump stops that would work like I am describing?
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Old 03-15-2010, 09:28 AM
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Quote:
Originally Posted by RockRunner View Post
Bill, I swear by the Rancho 9000's I used them in my 91 4Runner and they were great. I plan on getting them for the Dodge when the shocks on it wear out.

Get the in-cab adjustment controller and you'll also be able to use them off-road then.

The other option you may look into are air bags like we have on the big trucks. Adding coils to your springs set for a certain weight and heights so when you load up they make contact.

Or, carry the stuff you had on a bumper rack to keep the COG down that would be the cheapest and easiest.
The problem with the sway is, the shocks appear to be shot. Rancho 9012s. I just use the manual adjusters.
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Old 03-15-2010, 09:32 AM
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Well then it is easy, time for new shocks!!

PS Sorry we missed your call, dinner with the parental units last night. I'll call you tonight or call me.
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Quote:
Originally Posted by RockRunner;
keys = Man that is a whole story


TLCA #6136
Going under the knife again !

85 4runner Marlin Ultimate 5" lift 40" MTR's Soft top and doors Towed to Moab by the Big Blue Whale, 07.5 Dodge Mega Cab Laramie 4" lift covered and chiped No more slow lane for me
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  #8  
Old 03-15-2010, 09:41 AM
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Quote:
Originally Posted by rover67 View Post
So guessing that they might now work because they wouldn't have enough travel..

I wonder if you could use air bags as "helper" springs and just not attach them to both frame and axle, just one. I have no idea if that works or not. I've installed a few sets on tow vehicles but they were not 4wd by any means. In both applications they were bolted to the frame and axle like they were supposed to be.
That's what Tramontana runs on his Taco. Loads the snot out of it, and levels. Maaaaybe not quite what you wanna do with a Taco rear axle housing, but it works. He hardly wheels it though.
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Old 03-15-2010, 09:59 AM
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smells like warranty
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  #10  
Old 03-15-2010, 12:20 PM
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Yes... two problems to be solved.
1) Rancho 9012s are likely shot
2) Need to have a solution for load levelling

Talking to Roger Brown, it seems his 4Runner did the same thing as the rear springs approached a flat arch. He solved it with an Addco rear sway bar, his custom disconnects, and is considering a center airbag for load assist.

Hmmm. There's some bux there but it gets the mind thinking.

My life will get more complicated should I discover the rear shocks are fine after all. But I doubt it. The truck should not keep rocking when manually rocked, ESPECIALLY with Rancho 9000s set on highest damping.
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Heb Dduw, heb ddim; Duw a digon
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