I want to to able to make it spin around when the helicopter’s engine is on. Only problem is that when I try to use Hinge Contraints, the helicopter’s center of mass gets moved and causes the helicopter to be unbalanced. This is because the rotor isn’t part of the assembly and doesn’t want to be massless, even with the Massless property set to true.
How can I make the rotor massless while also able to rotate the rotor smoothly?
I don’t recall massless items ever having an effect on models/assemblies that I’ve built.
What happens when you test it with the rotor CanCollide off? If it works fine then you probably have an interferece between the rotor and fuselage.
If you are using MeshParts sometimes they don’t render visually the way that they do physically. You can do a couple things. Make the MeshPart collisions Precise instead of Default to see if that helps, or go into your settings in the Physics tab and select ShowDecompostionGeometry to see what the actual shape of your Mesh/Union is, which could show you where the components are hitting each other. Also in the Settings you can select a tool that’s been helpful to me. The ShowCollisions (I might have the name wrong) checkbox allows you to see a red ball wherever items contact each other during Test mod in Studio. It’s great for physcal items, and helps to see if you have Unanchored Parts instead of Anchored Parts since you’ll see red spheres around what Parts are moving.