Goosebox hitch installed
Hello all, I needed some extra room in my bed of the truck and wanted to do away with the Dodge factory Picture frame adapter and reese hitch to make a little room for my 60 gallon Fuel Cell / Toolbox...
Forum Discussion
You have two lever arms at play here. BOTH horizontal and vertical.
Lets talk vertical first. The major forces exerted at the pinbox of a trailer are the result of for/aft movement of the TV due to acceleration/braking and become even more amplified when you factor in pulling grades or braking on downgrades. These forces are amplified ONLY by the length of the lever arm in the vertical direction which any GN pinbox increases, and has nothing to do with the length of the horizontal lever arm (i.e. extended pinbox). You can have an extended pinbox that is 10ft long in the horizontal direction but the same height in the vertical direction and these fore/aft forces are not amplified one bit.
Now for the horizontal arm. The length of the horizontal arm will only amplify forces in the up/down direction. These forces are generally MUCH less than the fore/aft I mentioned earlier and are also cushioned by the TV's suspension. So yes an extended pinbox will amplify these forces but they are generally much less order of magnitude than the fore/aft forces which do get amplified by the increased vertical length of a GN attaching way down at the bed of the truck.
I have read all of the Lippert disclaimer, but my engineering degree tells me otherwise and just did not make me comfortable installing on my trailer. So, I guess we can agree to disagree but good luck with your setup. As long as your happy with it is all that matters.
Lets talk vertical first. The major forces exerted at the pinbox of a trailer are the result of for/aft movement of the TV due to acceleration/braking and become even more amplified when you factor in pulling grades or braking on downgrades. These forces are amplified ONLY by the length of the lever arm in the vertical direction which any GN pinbox increases, and has nothing to do with the length of the horizontal lever arm (i.e. extended pinbox). You can have an extended pinbox that is 10ft long in the horizontal direction but the same height in the vertical direction and these fore/aft forces are not amplified one bit.
Now for the horizontal arm. The length of the horizontal arm will only amplify forces in the up/down direction. These forces are generally MUCH less than the fore/aft I mentioned earlier and are also cushioned by the TV's suspension. So yes an extended pinbox will amplify these forces but they are generally much less order of magnitude than the fore/aft forces which do get amplified by the increased vertical length of a GN attaching way down at the bed of the truck.
I have read all of the Lippert disclaimer, but my engineering degree tells me otherwise and just did not make me comfortable installing on my trailer. So, I guess we can agree to disagree but good luck with your setup. As long as your happy with it is all that matters.
