I had the same question, when the idea of an overloading Grenadier came up.
Main principle for the build was to be able to remove the setup within max 5 mins.
So we finally decided to build a double drawer system for an ARB Zero 44L and a Layzee kitchen box from Aluminium profiles according to the ITEM standard.
Item offers a great 3D engineering tool on their website for free! Item.engineering
Top will be covered with Aluminium checker plate. Sides will be filled with a lighter “plastic” material, as they don‘t have any structural relevance.
box „boxes“ can be locked together front an back. Then the structure will be connected to the 2 latches at each side of the trunk using turnbuckles.
I‘ve bought 130kg slides to be build into the structure, which then will be covered with a screen printing plate on each side.
Dimensions are: 106cm wide, 51cm high and 91cm deep. The 91cm require the passenger backrest to be fixed in a more upright position, which is of ok for us, since we‘re going to remove the seat pads anyway to create space for 2 race bicycles there.
Fron Runner Slimline on the roof with a iKamper Skycamp 3.0 connected and you have a cyclists dream Overlander.
please ask if you need more details.
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