Quote:
Originally Posted by Phase
Wonder why they don’t use any strakes or fins. Was going to try and make mine look like that and connect to the rear wheel skirts
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Hey Phase! Strakes are only beneficial when they prevent vortices from forming because of other elements. Otherwise they deflect air that doesn't need to be deflected, i.e. they cause drag. It's easier and better to just have a well shaped smooth surface and let the air determine it's own least energy path. This is especially true if you are making mods upstream, as the optimal strake angles depend on what's happening along the entire length of the car.
If you are putting on rear wheels skirts, it might be worth having a strake on each side, as an extension of the wheel well. Then have the outside skirt and the inside strake meet, making a boat tail for the wheel. That's what all the solar car winners / serious aero cars do. (They even go a step further and make a whole fairing for each wheel.)