Forum Discussion
noteven
Mar 08, 2015Explorer III
RustyJC wrote:
The OP's primary complaint seemed to be surging (fore/aft forces imparted on the tow vehicle by the 5th wheel). If you currently have a solid pin box extension, this problem can be greatly reduced with a pin box extension that provides damped fore/aft articulation between the tow vehicle and 5th wheel. In the past, I've used and can highly recommend the Demco GlideRide pin box extension. It reduced the surging of a previous 16K GVWR 5th wheel by probably 85-90%. Our current 19K GVWR 5th wheel was factory equipped with the TrailAir tri-glide pin box extension that provides fore/aft compliance similar to the Demco with the addition of an air spring (airbag) and shock absorber to provide vertical compliance between the 5th wheel and tow vehicle.
Rusty
We have a MorRyde version of this on our 3 axle toyhauler, with a B&W Companion 5th wheel in the truck which has no fore and aft motion allowance. Looking at the video I took of colored water in a Mason jar riding on the front seat console - dancing and slopping "before" and gently rocking a bit "after" I would agree with Rusty - it has reduced fore and aft chucking by a lot. At least 80%.
We run our tires at manufacturer load and inflation table psi's.
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