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DUBLR
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Apr 17, 2018

Rocking Question For Guys With Mods for Stability

Rocking Question For Guys With Mods

Trying to get my 2017 Ram 3500, SWB, SRW Cummins, Rancho Adjustable, Fastguns, with 3700 lbs Eagle Cap 850 dialed in.

I’m running 20” Michelin load range E, aired to 80 lbs. 2017’s do not have overload packs.

I think I was misled as I added Stable Loads but springs were already engaged. Truck not really sagging and Stable Loads maybe raised it ½ inch. I’m right on rear axle limit, and right at GVW limit.

It has been some time since I had a Truck Camper and last one was decent size Lance on 1990 ¾ ton Ford. I had air bags and it handled fine. This Eagle Cap is heavier but so is the truck. Power is just excellent.

My concern is rocking side to side. If I jerk the wheel and correct, there is significant lean and roll. If I stand outside and push up on the camper, using around 120 lbs upward (bench) press, I can get some serious rocking going. It takes about 4 rocks to subside. My old Ford did this but corrected quicker if I recall. So my questions….

• Guys with what you consider good handling with the aftermarket “list” of known goodies, do you get this rock pushing up (entire Truck Rocks, not just bed.)

• Anyone with 2017 3500 Ram with same spring set up….. it would be great to hear what worked.

• I’m leaning towards a BIG WIG Sway Bar but that thing is going to have to be stout to curtail this. Common sense is leading me towards airbags but I don’t like the inboard spring mounting.

I just got back from a 500 mile run. I faced some high wind gusts (30 mph) and I ran by 18 wheeler's without any issues. That body roll is just concerning. I put one million miles on 18 wheeler's back in the day and driving this truck camper took me back to those days of full concentration. Like an 18 wheeler, there is no room for error if you misjudge.

Appreciate your insights and no, I don’t want to hear about the obvious Dually application! I run in snow and in the desert and Dually’s just don’t cut it for me. Also I really don’t think a lighter camper would make any difference. My 03 3500 RAM has overload springs and I’m thinking that is what is lacking (Thanks FIAT!).
  • Before you spend money on improving good truck, try the simple solution.
    Side to side rocking is amplified by high COG.
    So can you lower it?
    I load all heavy stuff like bottled water, beer, tool on rear floor in truck cabin (small dogs get the seats).
    Than rear cabinets in my camper are for light (plastic) stuff only. Took me a while to convince DW to load all the booze to lower, front compartments.
  • I heard some unfavorable things about the Big Wig Sway bar, might want to do a bit of research. Everyone frowns against airbags but I have a Ram 3500 ,Host Mammoth,7500 lb airbags (seperately lined), plus some wood wedges. I put a 120 PSI in the bags and I did not have much sway in it. I am considering going with the lower Stableload as it rides a bit rough when unloaded but as it is sits now it drives fine.
  • BUG WIG it is! Thanks for all the good input. One has to start somewhere!
  • I had only a little sway until I added airbags to level the load. Found that too much air in the airbags made the body roll worse. I found 35# left and 60# in the right leveled it with very little roll.

    It still felt uncomfortable when exiting an interstate off ramp loop.

    I added Energy Suspension bumper to the springs which raised the rear back up a bit without increasing sway. They work great at getting headlights back where they should be and are much (much) cheaper than stableloads but didn't stop the body roll on an exit ramp.

    Added rancho shocks which felt no different than factory shocks. Waisted money.

    Finally added a Helwig roll bar. That put it back in the comfort zone for me. Very solid now, even with roll bar in the least tension position.

    I put on heavy load range tires also, but that didn't seam to make any difference in how the driving felt. It did help with peace of mind in carrying the load.

    If I needed to "adjust" a truck for roll again, I would do the roll bar first, energy suspension bumper second, airbags third.
  • Sway....it gets us all. Lower stable loads did better for me than uppers. airbags leveled but did nothing for sway. Roadmaster anti sway bar helped a lot. Tire sidewall flex is a big culprit especially when you are right at a tires load limit. 19.5s were the only thing that did it on my F350 SRW carrying a Lance 1055. The side walls are super stiff and the tires are rated at 4500# load and so are the vision rims
  • “I faced some high wind gusts (30 mph) and I ran by 18 wheeler's without any issues.”

    IMO you are making an error if you are worried about sway and running past 18 wheelers at any time.