Sulastic Springs & Sway

I have Sulastics on my truck.

When 5th wheel is attached there is still a significant amount of travel left in the Sulastics.

Can not say there is any problem with sway.

I would think trucks with air bags would be more susceptible than a truck with only the Sulastic.

Air bags are softer than springs. The softness is a big seller on air bags both in the truck suspension and the hitch on 5th wheels.

The cost to have them installed is not hundreds for me.
The testing shows clearly what the results will be. I am very impressed with the company so far. I will post the outcomes when they are on my truck.

In an effort to keep focused ........The purpose of this post is to find out if there will be more or less swaying with the camper loaded.Hopefully from those that have had that experience.

Again - new design will not flip over.
The torsion joint is not design to give more flexibility. It is design to absorb small shocks.
Per my estimate it will absorb 1/2" differences like sewer cover, but will not absorb shock on freeway plates joint.
The differences are subtle and not having a gauge to measure it, it is hard to estimate how much it helps, but it does help and worth the price IMHO.
Especially when you DIY and don't pay hundreds for dealing with 6 bolts.

It would have been nice to see some real axle flex, under a heavy load on undulating terra. I've seen something like this back in my hard core jeep days. When REALLY twisted up, the apparatus can flip over making the springs sit on the hanger instead of hanging on the hanger. With a very heavy rig a small round of rubber will not deter 5000 pounds of axle leverage. It would be nice to test this with a truck camper with its higher center of gravity to see if there is more sway with this set up. I cannot imagine how there could not be more sway.
jefe

Drove F350 on Sulastic, carrying heavy camper for 300 miles last week and it was perfect.
The new generation of Sulastics do have end bumpers (they had issues with older models flipping over) and I was expecting that over 4000 lb camper will push it to the end.
Went under the truck and was surprised it was +- 1/2 the way.

One explanation is in this youtube video. He's got a heavy fifth wheel. From what I understand, the spring hangers will bottom out under heavy load and have no impact since you'll be sitting on the bump stops.

https://www.youtube.com/watch?v=czTp2HcnBPA