So, I was doing what every normal person does on their free time: browse google images looking at satisfying gifs of gears. I was enjoying myself when I saw this unique-looking contraption. The Universal Joint. This is pretty cool, since it can place spin from one cylinder to another that is 45 degrees in a different direction from it. Anyways, I decided to attempt to make one in simple planes, and it became surprisingly successful in its job. The cylinders move smoothly with eachother. I theorize if you put two of these together that you can make it go 90 degrees, so that will be my next project. Haha maybe I should put my piston engine on this.

Controls -

VTOL Lever: Control joint on the right

Throttle: Control joint on the left

P.S. This works in every physics setting, although I use it in high physics

Edit: I just made a double universal joint that can spin to 90 degrees, about to upload