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Doing some overlays in the past, I noted that several low drag Toyota cars fit AST-2 pretty well. Honestly the difference between the two templates mentioned is so slight, I am not sure how you would pull off building one versus the other without specialized equipment.
As others have mentioned the AST-2 side overlay template is just a starting point in one dimension, however it is a really good starting point for those of us who wouldn’t have a clue were to start without it.
The hard part is actually going out and building something. It really doesn’t take that much creativity to start with a 2D view/print and figure out a decent (but non ideal) 3D shape that will work for your vehicle and your intended purpose. Personally, I am shooting for a shape that is “not as terrible as it used to be” which is within the realm of my abilities (I hope) and tools (as I am presently wind tunnel deficient). Actually implementing that by building something is where the work is.
There is a top overlay and rear view of the AST-2 vehicle that have also been posted, which with a bit of imagination describe the AST-2 “vehicle” in full 3D. It is probably "too ideal" for direct implementation on typical boxy vehicles.
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