I designed this mount adapter for my Hero5 and Hero5 Session to mount more securely to my car. I saw another tri-mount on here, but it wasn't beefy enough for my liking, also I decided to try and keep the mounts as close to one another as possible, so as to minimize vibrations. It's printing as I type, and will update after I get a chance to take some pictures and try it out.

Comments are welcome! I'd love to hear feedback. Thanks!

Designed to use these suction cups: https://www.aliexpress.com/item/Suction-Cup-Mount-Tripod-Adapter-Camera-Accessories-For-Gopro-Hero-4-3-2-HD-janu-7/32789947675.html?spm=a2g0s.9042311.0.0.27424c4ddx3aOw

It looks like most Ebay suction cups that are 5.4cm in diameter would work.