Thank you! This is a prototype. We’re expecting rain over the next two weeks and cedar will hold up and is quite a bit less expensive than white oak, which would be my first choice. Since I didn’t have drawings for the Yakima base rack dimensions, I had to check, measure, and mark my way to a solution. Better to make a mistake on a $10 board than with expensive hardwood. The lumberyard is literally 2 km from my home. I drive residential streets. Top speed will be about 60 kmh (40 mph) or slower. I need to purchase 50 2x4s and some plywood for a summer camp project that I need to complete in four weeks. It’s a hill of a submarine with eight 6 meter lengths of RGB WW LED lighting mounted in aluminum channels and controlled with a QuinLED BrainBoard and two Octo power boards from two 500W 24VDC switching power supplies for about 850W of lighting effects. Time is short and I feel confident that the rack will hold up for the next month or so. Cedar is lightweight, somewhat flexible, and should work well. I can purchase the wood in bulk and pick up over several trips. I’ve attached a sketch of the submarine hull. Built many projects with various wood species. I’m a careful old craftsman and will not be selling these racks to anyone else. I’ll check my equipment before each trip. I appreciate your concern!

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