kd1yt
Well-Known Member
Another thought -The oldest original style Yakima "1A" towers, that they still make, that were designed to clamp to raingutters when near-all vehicles still had raingutters... are about the tallest racks I have come across (I still have some). And then they also make the Yakima "1A highrise spacers" that jack the crossbars up another 3.5 inches above the usual Yakima tower height. If you mounted some of the Thule "542" "artificial raingutters" on the top surface of the DB and then clamped Yakima 1A towers with the extra risers on, you'd be getting about as tall as I think you could do with this type of arrangement. With going that tall, I'd want to make extra big anchor plates for the underside of the DB, for the bolts going through the Thule 542s, in order to distribute the pull and twist of lateral loads. Also, with the old Yakima 1As, the "O.E.M." bars are a polyethylene coated steel, but I measured and found it was some standard increment of inch increments and I was able to get some stainless tube of the same diameter - doesn't get scraped up like the Yakima poly-coated bars.
Or, go whole hog and get a set of these: https://diamondbackcovers.com/collections/ladder-racks/products/cover-mount-rack?variant=29553915209
Put some L-track down the tops of the covers:
https://www.cargoequipmentcorp.com/Heavy-Duty-L-Track
and then use some of the boltable hardware to bolt the rack o' your dreams on top (which you could make out of Unistrut and Unistrut hardware).
Using the L track would make it easier to mount/dismount your rack or even change your rack over time without swiss-cheesing your Diamondback over and over.
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