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Mounting box on back of Fleet: Advice appreciated

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#11 DavidGraves

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Posted 21 May 2018 - 03:11 PM

Jeff

 

My 97 Toyota T100 bumper has carried our box for years in Baja and a lot of crap roads in the Northwest.

 

Bolt a fairly stiff plate of metal (I choose aluminum ) to your bumper.....truck can still easily load camper....bolt box to plate.

 

It works pretty well...three bolts remove the plate when camper is off.

 

Expedition Portal will think you are an Austrailian outback hero.


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#12 Redfish

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Posted 21 May 2018 - 05:18 PM

Dang. Outback Hero! That's the most convincing argument yet.

Do you have a picture you can send me or post? I'm not quite sure I understand how you mounted your box. 

Many thanks.


Edited by Redfish, 21 May 2018 - 05:21 PM.

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#13 So Cal Adventurer

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Posted 21 May 2018 - 05:42 PM

I am a little late to the party, but reading through the comments.

 

Food for thought...

 

I hear some bracing to the bumper idea.  If you mount the box to your FWC and brace it to the bumper, i cant see how you WONT have issues.

 

The frame flexes separately from the bed of the truck.  Bumper = attached to frame

 

my .02


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#14 PackRat

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Posted 21 May 2018 - 05:54 PM

The bumper mounted frame will need some kind of upper arm to help with vibrations so I would check where the tailgate would normally close to get a fore/aft surface to bolt it to. Then a strap that bolts to the rear corner of your carrier would be possible.

 

As noted, steel will be too heavy so aluminum would be the way to go.


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#15 PaulT

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Posted 21 May 2018 - 07:57 PM

Anyone looked at this option by Craig333 post #87?
http://www.wanderthe...uel-cans/page-9

Paul
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#16 Redfish

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Posted 21 May 2018 - 08:40 PM

Paul,

 

Thanks for your suggestion. I studied that thread pretty closely, plus other threads dealing with mounting jerry cans and other things directly on the camper. My box is long and skinny, so assuming we're talking about a camper mount, I need some kind of lower bracket attached to the camper to support the box. I believe the upper bracket will bear most of the weight.

 

Here's another photo/drawing showing how the upper bracket will be bolted to the frame using existing mounting points (from left to right, grab handle, step, and jack plate, 7 through bolts total). The bracket in the photo is a bit too high, but you get the idea. I feel pretty good about the upper bracket. 

 

I think the box has to be either attached to the camper or to the truck, not both, as per So Cal's comment, but I may just have a limited imagination.

 

Jeff

 

Camper box, brackets, bolts.jpg


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#17 patrkbukly

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Posted 25 May 2018 - 12:52 PM

For whatever it's worth,

On my F250 I cut a milk crate halfway up so that it is half deep and mounted this to my bumper. This allows for the cassette toilet door to still swing open. It is durable enough to have our camp chairs sitting in the crate and then bungied higher up to the camper. 

 

I will try and post some pics.

 

And yes I would rather a better look than a milk crate but the damn things are durable and weatherproof so works for me.


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#18 Redfish

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Posted 26 May 2018 - 12:03 PM

Photos would be great. Thanks.

Jeff


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2016 FWC Fleet


#19 ntsqd

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Posted 26 May 2018 - 02:36 PM

Aluminum is a double-edged sword. It is less dense than steel, but it is also less rigid. By the time you add enough thickness to it to make it as rigid as a thinner piece of steel they weigh nearly the same (I've done that design study several times over the years). If you have design skills and can design the assembly's geometry to make it rigid (rather than relying on it's material thickness), that is where aluminum will save weight.

 

For the tire carrier that I designed and built for our truck I used the tail-gate pivots and one of the tail-gate latch posts to support the whole assembly. Looks like the thread was one of the d-base victims. A couple in-process pictures:

i-m7Tsgtx-M.jpg

 

i-hLr73Mv-M.jpg

 

Just because the bumper itself won't support the load doesn't mean that you can't employ either it's support brackets or it's mounting bolts to support the load, without resorting to a whole new bumper. On our 4rnnr the rear bumper and its supports are basically tin foil, but the OEM trailer hitch right behind the bumper is significant and I have designed a tire carrier that will become part of that structure.


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Where does that road go?

#20 RicoV

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Posted 26 May 2018 - 06:51 PM

Nice work!


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