Frame Stiffing to reduce Porpoising?
Got a question for you seasoned drivers with older rigs. I have a 1999 F350 Dually Quad Cab Long Bed. I've been driving it for thousands of miles and for the most part, it's been fine. However, while ...
Forum Discussion
eHoefler wrote:
Your center of gravity needs to be forward of the rear axle to place weight on the steer axle. Like a poster said earlier, move the camper as far forward in the bed as possible. When you add water, your porpoising goes away, that is a dead give away that you don't have enough weight on the front axle.
Agreed in general, but with a crew cab and 1000lb engine up front he’s not in any way too light in front. And he did not say water/no water makes a difference. And there very little chance it does.
Now with greater weight aft of the rear axle even front weight ok, that is a fat kid on one side of the teeter totter.
But the primary issue is he feels it has excessive frame flex. Not going to even remotely begin to cure that by shuffling a few hundred lbs around and not going on a big diet in the rear end.
And the right roads will porpoise a lightly loaded truck.
