Wobbly Servos on bus chassis

Hey there, I’m making a chassis for my bus, but when trying to implement servos (that work) seem to bug out, i’ve read many threads but none work.

I expect it to work smoothly with minimal glitches.

Here’s a clip:

And here’s the properties of my servos.

image

First of all make sure the wheels don’t hit the bus model by making a collisiongroup named i.e. “BusGroup” and all parts in the bus including the wheels should have this group. Then in the editor, make it so BusGroup parts cannot collide with one another.

Secondly, be sure all parts in the bus model except the wheels have the Massless property set to true. If needed you can add invisible weights later on.

Lastly I recommend using spheres instead of cylinders for the wheels, it’s best practice in cases like these. You can then make the spheres transparent and insert cylinders or even meshes as fake wheels by welding them to the sphere.

Hey there! I’ve tried all the stuff you said (except the spherical wheels), but it still jitters around.

I thought of adding suspension with springs but it doesn’t seem like a viable solution. Perhaps change the physical properties of the wheels? Higher density and friction? Otherwise, I’m out of ideas.

Update:

I’ve rebuilt the chassis but still wobbled around.

Later on the fix was to make one big rod and use a servo on that, then the hinge constraints are added on the wheel, like this: