FINALLY DONE
So to prevent my contra-rotating prop housing from spinning instead of my secondary props, i had to design some very strange looking screws and mechanisms.

After that i made a stand and crank handle, taking longer than expected

Next steps are slicing in Bambu Studio and printing, but i dont have the right filament colours right now so I will not be printing anytime soon, but if it works in CAD surely it will work in real life… right? (I definitely forgot to add clearance somewhere)