Frame Stiffing to reduce Porpoising?

adamis wrote:

Grit dog wrote:
But a very important point that maybe scooby just brought up is the amount of movement in the overhead portion that we ALL see from time to time with big TCs is not necessarily indicative of excessive frame flex, nor is porpoising. Unless it’s literally a rocking horse most or all of the time. Which is more likely suspension and shocks. Given the camper weight and configuration changing is not an option.

Perhaps my use of the word porpoising was just the wrong terminology and that set you off. What you are describing is what I am observing. The camper overhead rocking slightly up and down on rough roads. When that happens, I can look in the side view mirror and what I observe is these lines flexing ever so slightly.



Now, I don't have a way to measure it, I guesstimated 1 to 2" but probably more likely in the less than 1" range now that I think about it again. So, everyone else, while you are driving down the road and come across a bumpy section and see the overhead portion moving up and down, take a look in your side view mirror down this sight line and I am betting you will observe some movement as well.