No rear deck, no problem

[pinstriper]

[quote source="/post/24415/thread" timestamp="1473277403" author="@ajreaper"]What I found is that on roads where you get "bumps" if you will the cargo carrier sort of acts as the end of a whip when it is snapped- it puts a lot of stress on the mount. Once I discovered  it had bent a bit we unloaded it and removed it for the trip.  We are going to revisit how it attaches.  LOL, some of the freeways in New Mexico and Wyoming have some killer "bumps" in them, in fact saw a bike carrier with bike attached just on the shoulder of the road in Wyoming- understood exactly how it had ended up there and was glad I was not going to be surprised by walking to the back of the trailer and finding the carrier and its contents gone.[/quote]This is exactly what several threads warn people about, who then get somewhat bent out of shape (see what I did there ?) at the someone telling them their genius idea isn't going to work because physics.

For very light loads you might get away with it, but the geometry alone puts a lot of torque to a very weak bumper. The carrier itself is probably enough to create twist over time.

[admin]

Yeah many people have warned of this and the truth is there is no good way around it sort of major modifications. That is why I boxed and reinforced my bumper with the secondary tube tabbed below the frame rails. Even still the amount of weight that can safely be loaded should be kept to a minimum.
Now I don't remember the exact math but for some reason I recall a very distinct memory from a science class that demonstrated that a simple 10lb bowling ball could easily generate something like 2000 lbs of force on impact if dropped on your foot. Now I also know it's not the same physics involved here but seeing how the loads can have an exponential increase based on different scenarios I can only imagine what 50lbs of weight can do while being whipped around behind the camper.

[pinstriper]

[quote timestamp="1473340897" author="@admin" source="/post/24450/thread"]Yeah many people have warned of this and the truth is there is no good way around it sort of major modifications. That is why I boxed and reinforced my bumper with the secondary tube tabbed below the frame rails. Even still the amount of weight that can safely be loaded should be kept to a minimum.
Now I don't remember the exact math but for some reason I recall a very distinct memory from a science class that demonstrated that a simple 10lb bowling ball could easily generate something like 2000 lbs of force on impact if dropped on your foot. Now I also know it's not the same physics involved here but seeing how the loads can have an exponential increase based on different scenarios I can only imagine what 50lbs of weight can do while being whipped around behind the camper.[/quote]See Newton about the forces, Pythagoras about the geometry.

[admin]

Yeah, but my eyes get all glossy when detailed physics get involved. Plus everything changes drastically based on the relationship of acceleration/deceleration and time. So every single bump will come out with a slightly different result.

[charliem]

[quote source="/post/24450/thread" timestamp="1473340897" author="@admin"]Now I don't remember the exact math but for some reason I recall a very distinct memory from a science class that demonstrated that a simple 10lb bowling ball could easily generate something like 2000 lbs of force on impact if dropped on your foot.
[/quote][font size="3"]It has to do with how long or far it falls vs how long or far it takes to stop it. In short, that's why a hammer works.[/font]
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[ajreaper]

In a perfect world with nice smooth roads you'd be good to go but reality is often a cruel mistress.

[admin]

This is why I plan for the worst and hope I'm just being overly cautious.

[djmiller]

Thanks Sean for adding your comments. If your going to do this please see Sean's bumper modification... http://www.livinthelitelife.com/category/diy/

[glamcamper]

Thanks for sharing this. very interesting!