President's 100, US Army Distinguished Rifleman
Joined:
Dec 2004
Posts:
23684
EE: 100% (4)
OH, USA
Posted: 12/28/2024 3:30:22 PM EDT
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My (used) truck camper didn’t come with crossbars (Lance Load Roof Rack System) and I wasn’t inclined to pay $400-500 for an aftermarket system. Instead, I bought two 10-foot lengths of aluminum unistrut and cut them down to 85 inches. This would allow me to span the width of the Maggie racks and place the cut between the strut channels. The 35-inch remainder became a riser to allow me to clear the bathroom skylight and vent tube. I drilled six equidistant holes in the shorter strut and bolted it to the sliding nuts in the maggie rack. Then using strut channel spring nuts, I bolted the crossbars to the risers. All in all, under $200 in parts and a hour of labor. I could have done it much cheaper with steel unistrut, but I saved 15 pounds going with aluminum. In addition, aluminum won’t rust and it’s rated to hold more weight than I’d ever put up there. One 10-footer would hold 330 pounds, so one 7-footer would hold more. Double that weight for two. I also have the benefit of using the myriad of unistrut accessories to bolt whatever I want up there, like a sewer hose carrier or extra solar panels. The 35-inch risers gave me 30.5 inches between the crossbars.        
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No snowflake in an avalanche ever feels responsible.
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Disclaimer: Nothing I post on the Internet, to include political commentary, implies official sponsorship, approval, or endorsement from my employers.
| Nice! 80/20 would be a good (albeit, more expensive) option, too. |
Ludwig Boltzmann, who spent much of his life studying statistical mechanics, died in 1906, by his own hand, Paul Bhranfest, carrying on the work, died similarly in 1933, Now it is our turn to study statistical mechanics...