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Fstmvrerik's avatar
Fstmvrerik
Explorer
Aug 06, 2020

Learning curve going from 5th wheel to TT

I have logged thousands of fifth wheel miles, my wife and I decided to switch to a TT to allow us to carry our kayaks on the truck (easy to load). My truck is an F350srw 4X4 short bed, the trailer we bought is an 2021 Outback 340BH, 39 ft long empty weight 8787, tongue wt 1040. When we bought the trailer I hooked up with my regular hitch that after hitching up the top of the ball was about 2 1/2" below what was level on the trailer (the weight dropped the truck about 3") the springs were just touching the helper springs). I drove home and found the trailer was a real handful over 60mph, with sway issues starting (also 30mph side winds). Once we got home I ordered an Anderson hitch for sway control. I have a set of air bags that I am going to install.
I am wondering if I should set up my new hitch with the truck kept level, or slightly nose down when adjusting my ball height to keep the trailer level, or slightly nose down; or should I set the ball height with air bags at 5psi and adjust the trailer after loading with the airbags to level or slightly nose down. I am not terribly worried about my steering axle weight, so the hitch is primarily to help control sway and bouncing.
I am totally new to TT towing and it is an entirely different towing experience. Am I headed in the right direction, or is my thinking flawed?
  • There are other more moderately priced WD hitches that also do a great job. I have the Reese SC and love it. Basically anything with built in sway control is night and day better then an old school chain WD hitch that you start adding sway bars to.
  • BarneyS wrote:
    Yes, your thinking is flawed in that the weight lost off the front axle of the two vehicle is the major reason for steering issues and sway control. The WD hitch restores that weight and, along with several other issues, the control of the trailer is restored.
    Barney


    With the same trailer weight, you normally have a lot more of that weight is carried by TV when using 5th wheel. But the 5th wheel is always mounted close to the rear TV axle, so it does not transfer any weight off front. Also, the hitch mounted close to axle eliminates the leverage any trailer sway would have to push back of TV, so driver is not over-steering to keep TV going straight, which makes trailer sway to stay behind TV.
    Instead of trailer, think about hauling a heavy box, say 75% of carry capacity. Set that box at the back of bed, and go for a drive. Then move the weight to front of bed. You will see the truck drives better. Not only does the 2nd load not transfer weight off steer, it adds some to the front. Pull behind trailer is extreme case of the box at back of bed.
  • mrad's avatar
    mrad
    Explorer II
    Anderson had me demo that hitch with my Ford Excursion pulling a 35'bumper to bumper TT that had about 1150 tongue weight (used the shurline to verify). The sway control was fantastic. On one of our trips from MN to the grand canyon, I hda several times where I could not feel the TT behind me and had to glance in the rear view mirror to make sure it was still connected to the truck. However, I was not able to remove as much weight as I wanted from the rear axle. With a one ton, you may be fine as the EX did have soft springs. I also tended to carry a lot of weight in the cargo compartment of the EX.
  • I just installed the air bags, and did a test pull. I hooked the trailer up and leveled the trailer, (slightly nose down). The truck was a little rear end high due to my non adjustable hitch.
    On the highway there was a slight side breeze (15/20 mph). The trailer behaved itself pretty well. I did not scale the truck trailer yet to figure out how much weight I am pulling off of the front wheels. I need to get the trailer fully loaded, and get the truck full of fuel (140 gal) so I can figure out what is going on weight wise. Still do not have the Anderson hitch, they are backlogged still.
    The main reasons I went with the Anderson is its ease of hookup, quietness, and I do not have to mess with it backing up. It seems I spend quite a bit of time going backwards when we camp. I am hoping for anti sway, not to worried about weight yet, I will see what load management does to keep my weight on the front wheels.

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