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Originally Posted by jviolet10
The main issue I see people having is to much of an angle so I'm going for a modest slope to a 12.5deg angle at the tailgate.
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Welcome to Ecomodder, it sounds like you'll fit right in.
Those people you refer to all started with the minimal (safe from separation) angle of 12.5° and then went searching for a maximum (w/o separation).
kach22i's innovation is to reduce the weight, cost and complexity of a full canopy to that of a full tonneau and half a boogie board. This has attracted attention for two people who invested their own time and energy in documenting the performance in CFD. I say
You might start that thread
before the build. A lot of people start a thread with something like "Here's my brick with edges as sharp as a Lego, now how do I slather aerodynamics all over it?" You could avoid that.
You have a single two-dimensional line, where do you go from there? What materials?
What I'm liking lately is wakeboard control arms.
These range 5-8ft, I eventually bought most of them. They are very light tempered aluminum. The 5-footers might serve for a rear edge, with the 8-footers longitudinal. I paid (maybe) $10-15 each. Here I'm considering a boat tail on my Superbeetle:
Also, considering what you do with that single curve, here's a pickup canopy on the only pickup I had laying around in 3D. It presents additional frontal area at the front to absorb any turbulence or incipient vortexes coming off the cab and maximize interior volume. Not a good fit to the cab, though.
The solution to that is squircular; but I'm going to give kach22i back his thread now.