Major Hardware Fan Showdown
 

https://i.ytimg.com/vi/peGR3-jgvtY/h...BFt_6TF2kNIh7A
https://www.youtube.com/playlist?lis...yI-nqCCk-wfCU9

Not recommending someone run out and 3D print a fan for their F-150. But it's interesting what works and what doesn't. Don't know why the first video went private. Number two is just the setup, three and later have the submitted designs.