Originally Posted by Jimalberta
I was surprised at how much the small trailer would buck up and down as the fiver moved with the truck. The back end of the fifth wheel moves up and down a lot and I could see all this happening with my backup camera.
You probably can't see it in a backup camera, but the second trailer also sways a lot more than the 5er. Let someone else drive your rig down a bouncy curvey road at highway speeds while you follow behind and watch the trailer. It will probably scare the stinky stuff out of you. I towed a 10' single-axle utility box trailer behind my 5er for 10 years, attending the races at Texas Motor Speedway three times a year. The trailer contained handicap transportation such as a golf cart or electric scooter, plus a big generator and gas for the generator. Gross trailer weight less than 3,000 pounds, so no need for a weight-distributing hitch.
Preparing for the first trip, my wife followed me from town to home. She commented about how much the trailer swayed behind the 5er. So we tested it with me following while she drove the rig. Sure enough, when the 5er did a little bobble, the little trailer did a huge sway.
The trailer was properly loaded with over 10% hitch weight, so the fix was to add a sway bar to the weight-carrying (WC) hitch. Worked like a champ. The little trailer still swayed a lot more than the 5er, but the sway bar stopped the sway after one oscillation.
Most hitch manufacturers sell those simple friction sway bars. Ours is an EAZ Lift, like this one:
Eaz-Lift 48381 Left Screw-on Sway Control
To attach that sway controller to a weight-carrying ball mount, the ball mount must have a tab sticking out with hole where you add a small ball that fits the sway bar. Hereís one:
Curt Manufacturing 45820 Sway Tab Ball Mount
Also note that the EAZ lift sway bar above includes only one of those little balls, and you need two, one at each end of the sway bar. Hereís that ball:
CURT Manufacturing 40093 1-1/4 In. Diameter Sway Control Replacement Ball