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SteveRankin's avatar
SteveRankin
Explorer
Oct 28, 2013

Long box camper overhang - Problem??

We have a Bigfoot 9.6 on our 2010 Dodge Ram 3500. Both the Bigfoot and Ram are long bed models, however, we have an auxiliary fuel tank in the front of the truck bed so the camper doesn't sit up against the front bulkhead of the pickup bed.

The fuel tank is 12" (front to rear) and is currently mounted 6.5" from the front of the bed. Since we've replaced the 3" deep rubber bumpers with 1/2" foam, our current net position is 16" aft. We're planning on moving the fuel tank 4" forward which will reduce that to 12".

Our question is about the structural integrity of the camper since the camper isn't supported fully at the rear. Note that it is currently sitting on a sheet of 3/4" plywood and 2" foam and a bed mat. We're thinking of adding a second sheet of 3/4" plywood to provide additional stiffness/support to the overhanging camper.

The bottom line question is . . . Does anyone have any actual experience - good or bad - with this kind of overhang?



FYI: There is zero air in the air bags when this photo was taken. Also, we are not concerned about the weight distribution/handling in this thread. Those issues are being addressed separately.
  • I have seen SB campers used on LB truck w/fuel cell. I have never seen a LB camper on a LB truck and fuel cell. I would be more concerned about COG then I would floor support.

    You will need to visit the scales to see what is going on with your axle loading.
    You MIGHT be unloading the front axle...

    Good luck, B

    Edit; Also, plywood would not be the material of choice to add reinforcement...it has no strength in shear.
    Steel beams/plates or unidirectional composite maybe...but now you are adding weight and/or $.

    Why not get an under bed fuel cell? Then you won't have this problem.
  • Campers are designed to be self-supporting - you can use them indefinitely without any floor support at all when they are sitting on their jacks. The only issue is protecting the bottom skin of the floor if you think it needs protecting. My camper is designed to over-hang - it's an 8 foot long base designed for use in a 6.5 foot bed. The real issue, as you point out, is the camper is designed to be loaded at the front of the bed for correct weight distribution.

    Brian
  • I spoke with a former engineer from Eagle Cap regarding just your set up when hauling mine on a short bed. He suggested I put to sheets of 1/2" plywood in the bed so the aft floor would have some support. Now that I have a long box truck I'm thinking of a fuel tank in the front just as you're doing. I'm looking at the camper being 12" aft for a 10-11" tank.