Using Weight Distribution Hitch on Trailer with Side-Frame-Mount Jack
Published 11/02/2017
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Question:
Hi, I have a utility trailer with a 6000lbs capacity. I will need to carry a load of approx. 5000lbs on a long distance quite often. I am wondering if I could install torsion bars any kind/type to shift some load to the front of my pickup truck or if the tongue jack will cause an issue. The jack is not centered, its on the side of the A frame. If it is possible, which product would work, or will any fit? Thanks
asked by: Roch
Helpful Expert Reply:
In order to use a weight distribution/sway control (WD/SC) system it is necessary to have room on the trailer A-frame to mount the spring bar lift brackets and the hitch on the tow vehicle must specifically be rated for use with WD/SC systems. The hitch safety sticker will indicate if it is indeed rated for use with WD.
As for the jack, it sounds like you have a side-frame-mount jack like # FXPD15L or one of the similar jacks of this type shown on the linked page.
Some of these, like # TJD-7000S, weld on to the frame and cannot be easily moved; others like # FXPD15L and # STC-V211 bolt on and so they allow for some flexibility in exactly where they will install on the trailer frame. If your jack is a bolt-on type you may be able to simply reposition it. If your A-frame trailer has a central mounting point for a tongue jack like # TJA-5000S-B then this is the way to go.
The key to selecting a WD/SC system is know the actual measured tongue weight (TW) of the trailer when it is loaded up. We offer a scale that makes this measurement easy, part # e99044. to the measured trailer TW you will add the weight of any cargo in the vehicle that sits behind the rear axle, such as a tool box or generator. This cargo weight needs to be added to the TW figure since it will affect the operation of the WD system. Ideally your total TW will fall in the middle of the operating range for the system. For instance, a 5000-lb trailer that is properly loaded will have TW of about 600 to 700-lbs. An example of a WD system suited to this TW is # RP66083.
This system requires that the frame-mounted spring brackets be positioned about 30-inches rear of the hitch ball. The brackets need about 5-1/2-inches of room along each frame rail. Other systems like the Fastway # FA92-00-0800 use narrower brackets that take up less room. This system's brackets require placement 27- to 30-inches rear of the hitch ball.
Your best bet is to check your hitch to confirm it is rated for WD and to send us a photo of your trailer tongue that shows the jack position.
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