Excessive Trailer Movement - Page 2 - Fiberglass RV

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Old 08-18-2007, 12:30 PM   #15
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I'd like to 'weigh' in here and mention that in MY opinion if given no choice, I would slightly exceed the vehicle tongue weight rather than have the trailer too light in front. Ten percent minimum TW and that should be scale weights.

Anyone having sway problems (either passing-truck sway or down-the-road sway) should get real weights at a scale and then do the math on the GVWRs, GCWR and tongue weight. Move stuf around to get every thing right and if needed, get a small WDH (hopefully with built-in sway control, which is FAR superior than the friction sway control).

As stated, a friction sway control (or any sway control) is only a bandaid that may be covering a serious, underlying problem. Improper application of a sway control to a problem may just let you get get going faster and have a bigger fall! Fix the basics before adding the fine tuning...

That's all general stuf. I agree with Brian that roll is either coming from a side-to-side imbalance, the tires or the suspension. When I had roll on my old Jayco, it was a direct result of using P-radial tires on the trailer (didn't have roll, put on P's, had roll, replaced P's with ST's, didn't have roll), although some folks on this forum have used P's successfully.

There's also a less likely possibility that the roll is in the tow vehicle, not the trailer (side movement of trailer tongue causes side movement of TV rear, compressing one side's tire/suspension, so you should also check tire pressures and shocks, perhaps even towing with a friend's TV to see if the problem is still there. Might help to have someone inside the trailer, but in safe conditions, of course.

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