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Old 03-03-2017, 09:00 PM   #58 (permalink)
freebeard
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Count the fasteners. Look at the size of the washers under them. Look at the thickness of the aluminum. Consider the engineering in the turnbucle/clevises to tune the flight altitude.

This is for downforce. They said they have to take it off to get the car on the trailer and that took 45 minutes; but it's worth doing, apparently.

I'm thinking beach umbrella ribs; maybe ten of then across the top rear, ganged together in parallel. There is your frilled lizard right there. No towed vehicle, retracted — no downforce. Extended with towed vehicle, it only has to maintain the bubble instead of a hurricaine-force onslaught. Fix the struts to the vehicle and move the ends of the ribs and it will extend backward.
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