Just on appearances, the Roadmaster looks more capable. That big spring looks stout.
I just remembered also that when i bought the Bilstein shocks, they offered a steering damper and i did buy it and had my guy install it with the shocks. It looks like a basic shock-- no spring over it. Clearly, it's not effective enough. Or, maybe i have some other problem.
We are on the road now in Utah, headed to Colorado, and I've had lots of miles to pay close attention to how it's driving. I give it a solid grade of B, but still requires a little more steering input than i think is ideal.
I generally go 64MPH, because that seems to me the natural speed The engine likes. And when the big trucks pass on the left at 75 MPH my front end is sucked left and i have to be sure to correct to the right, and then re-center. Mild inputs, but I would like to not have that happen. It makes the wife nervous when she drives.
Somewhere, I read that this effect might also be cured with a Panhard rod on the back axle. The idea being that the air mass at the front of the passing truck is pushing against the big flat side of my MH and shoving the body horizontally over the rear axle (slightly) and that's enough to make my front and go left.
The animation i once saw about Panhards seemed to confirm that, but maybe it was just a sales pitch. In my area of the SoCal desert, i can't find any professional mechanics that know anything about rv suspension.
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