Good Afternoon All,
We are back from our short stay on the Coast - must admit I like going anywhere better than going nowhere.
I just spoke with my structural engineering buddy concerning "chucking" and other such related forces. This is what he said.
You have two "coupled" heavy masses traveling down the road - the TV pulling the trailer. Each has its own suspension, each responds to road variations in its own way, and each has the desire to continue doing what it is presently doing (inertia). Additionally, the smaller mass (TV) it trying to control the direction of the larger mass (trailer).
The result is a constant tug-of-war between the two. This tugging against one another manifests itself as forces between the two that cause one or the other, or both to attempt to move in a direction different than that of the other. Motions that result include chucking, sway, wagging, bouncing, etc.
There are basically two ways of combating the problem. 1) rigidly connecting the two masses togther so they act as one (eg. Class A motor home) or 2) decouple the masses with some type of enegry consumption or disipating devise to "lessen" the effect.
Devices like the Moryde, Trailair, and Glide Ride decouple the trailer from the TV and thus lessens these effects but do not totally get rid of the effects. Those of you who have these devices can look thru the rear window of the TV and watch the trailer hitch move around with respect to the TV, and see the effects of this decoupling. But, its like just about everything else - there are trade offs. Design combinations that work well with minimizing small movements, don't do nearly as well dealing with large movements.
With respect to my Glide Ride pin box (the only one I have experience with), it works great most of the time. But some of the time, I can still feel the chucking. But all of the time, it is better than when I had just the "Plane Jane" pin box that orignally came on the Monty!
Rick & Wanda
2003 2500HD Crew Cab
Duramax with Allison Trans.
Firestone Airbags
Glide-Ride Pinbox - It's Great!
2006 3400RL - We Love The Trailer!
Montana Customer Service?